1417 results about "Electron donor" patented technology

The invention discloses a preparation method and application of efficient polyculture denitrification synergistic phosphorus removal filler, and belongs to the field of functional material development and sewage treatment. The method specifically comprises the following steps: step 1, uniformly mixing iron ore powder, sulfur powder and polyester high-molecular compound powder, and heating and melting; and 2, carrying out molding treatment on the molten substance, and cooling and solidifying to obtain the efficient polyculture denitrification synergistic phosphorus removal filler. According to the polyculture denitrification synergistic phosphorus removal filler disclosed by the invention, a polyester high-molecular compound is used as a supplementary electron donor of a sulfur-iron ore autotrophic denitrification synergistic phosphorus removal system, so that the nitrogen removal efficiency of denitrification is improved; the compound also can be used as an electron donor to participate in a ferrous sulfide reduction reaction, so that the discharge of sulfate in effluent is reduced, and enhanced phosphorus is removed in a form of Fe3 (PO4) 2 precipitate; meanwhile, heterotrophic denitrification generates alkalinity to make up the consumption of alkalinity in the autotrophic denitrification process, and the stability of pH in the system is maintained, so that the removal efficiency of nitrogen and phosphorus is enhanced, and secondary pollution is reduced.

The invention discloses a high-efficiency sulfur-iron-based nitrogen and phosphorus removal and autotrophic denitrification composite filler and a preparation method thereof. The high-efficiency sulfur-iron-based nitrogen and phosphorus removal and autotrophic denitrification composite filler is characterized by comprising the following raw material components in percentage by mass: 1-60% of activated pyrite powder, 30-95% of sulfur, 1-10% of trivalent iron salt and 1-10% of limestone powder. And forming through a thermal compounding process. The preparation method comprises the following specific steps: firstly, activating the pyrite and the magnetic pyrite at high temperature under the protection of protective gas; sulfur is heated to be in a molten state; uniformly mixing the activated pyrite powder, trivalent iron salt and limestone powder to obtain a powdery mixed material; adding the powdery mixed material into molten sulfur, raising the temperature to 125-145 DEG C, and fully and uniformly mixing; and finally, cooling and curing the obtained material to obtain the autotrophic denitrification composite filler. According to the high-efficiency sulfur-iron-based autotrophic denitrification nitrogen and phosphorus removal composite filler prepared by the preparation method, pyrite is calcined and activated, ferric iron salt is used as an oxidizing agent to promote decomposition of the activated pyrite, and the electron donor release capability of the pyrite is improved, so that the high-efficiency nitrogen and phosphorus removal effect of the filler is realized.

The invention discloses a high-efficiency near-infrared two-region aggregation-induced emission material, a preparation method thereof and application of the high-efficiency near-infrared two-region aggregation-induced emission material in bimodal surgical navigation. According to the molecular structure, the organic near-infrared two-region material with an intramolecular charge transfer characteristic is constructed by taking thionaphthalene tetracarboxylic acid diimide as an electron acceptor group and tetraphenylethylene as a molecular rotor and an electron donor unit. By expanding the length of a pi conjugate fragment and introducing an isotope effect, the oscillator strength can be improved, and high-frequency vibration can be inhibited, so that the radiative transition rate of molecules is promoted, and the non-radiative transition rate is inhibited. The nanoparticles prepared from the aggregation-induced emission material have the advantages of high brightness, large Stokes shift and good light stability, and have an excellent effect in bimodal imaging guided mouse in-situ breast cancer and sentinel lymph node operation excision.

The invention discloses a dithieno-cyclopentadiene copolymer photovoltaic material, a preparation method and photovoltaic application of the dithieno-cyclopentadiene copolymer photovoltaic material. According to the invention, a dithieno-cyclopentadiene electron donor unit is synthesized, and the dithieno-cyclopentadiene electron donor unit is connected with another electron acceptor unit dithieno benzothiadiazole through a carbon-carbon single bond by a Stille coupling method. The polymer donor photovoltaic material has optical absorption complementary with that of a fullerene acceptor material and HOMO and LUMO energy levels matched with those of the fullerene acceptor material. A polymer solar cell is prepared by taking the polymer as an electron donor and fullerene as an electron acceptor, the highest energy conversion efficiency of the polymer solar cell can reach 5.44%, and the polymer solar cell has relatively good photoelectric conversion efficiency.

The invention belongs to the technical field of sewage treatment, and particularly relates to an anaerobic ammonia oxidation-photoelectric denitrification deep nitrogen removal method. The method comprises the following steps: firstly, adopting a double-chamber reactor; introducing part of sewage into the cathode chamber, carrying out Anammox reaction under a dark state condition to remove ammonia nitrogen and part of nitrite nitrogen, and synchronously generating nitrate nitrogen; turning on a light source to irradiate the anode chamber, exciting photo-induced electrons by a photosensitizer, transmitting the photo-induced electrons to the cathode chamber through an external circuit, and driving the sulfur autotrophic denitrification sludge to reduce residual nitrite nitrogen and nitrate nitrogen generated by Anammox; the total nitrogen removal rate is close to 100%. According to the invention, photo-induced electrons are used as the only denitrification electron donor, so that the addition of a carbon source / sulfide is thoroughly avoided, and the risk of secondary pollution is eliminated. The method is suitable for green low-carbon deep treatment of sludge digestion liquid and pharmaceutical wastewater high-ammonia-nitrogen low-carbon-nitrogen-ratio sewage.

The invention provides a solid polymer electrolyte capable of working in a wide temperature range. The solid polymer electrolyte is obtained by carrying out in-situ polymerization on a precursor solution on the surface of a base material, wherein the precursor solution is prepared from a first type of polymeric monomer, a second type of polymeric monomer, an initiator and electrolyte salt; the first polymeric monomer is an electron donor, and the electron donor is at least one of cyclic ether and olefin monomers; the second polymeric monomer is an electron acceptor, and the electron acceptor is one or more of cyclic ester, olefin monomers and anhydride monomers. The solid polymer electrolyte keeps good mechanical performance and high ionic conductivity in a wide temperature range, and an assembled solid secondary battery has good electrical performance and cycling stability.

The invention belongs to the technical field of propylene polymerization, and particularly relates to a catalyst for olefin polymerization, an isotacticity-adjustable propylene polymer containing an ultra-high molecular weight polypropylene component and a production method of the isotacticity-adjustable propylene polymer, and the method comprises the following steps: in the presence of hydrogen and a polymerization catalyst, propylene or propylene reacts with one or more optional comonomers; at least one part of the obtained material flow containing the polypropylene component I is continuously subjected to polymerization reaction for 0.05-3.0 hours in a pipeline positioned outside the reactor or a subsequent reactor connected with the pipeline in series and in the presence of a mixture DH of a hydrogenation catalyst and an external electron donor; a propylene polymer product containing 0.03 wt%-15.0 wt% of an ultra-high molecular weight polypropylene component is obtained; the molar ratio of the hydrogenation catalyst to the total amount of hydrogen is 1 / 10000 to 1 / 100. According to the invention, the polypropylene product containing the ultra-high molecular weight component with lower content is prepared, and the isotacticity of the ultra-high molecular weight polypropylene component can be flexibly adjusted.

The invention discloses a compound containing a urea structure as well as a preparation method and application of the compound in a color developing agent, and relates to the technical field of color developing agents. The compound containing the urea structure is a # imgabs0 # structure as shown in a formula 1. The compound containing the urea structure is synthesized through multiple steps of Suzuki reaction, bromination reaction and substitution reaction. The compound is used as an electron donor to be applied to a thermosensitive color development system and forms a color development composition with a phenolic compound and an acidic material, and the activation temperature is as low as 60-120 DEG C. The ureido structure stabilizes a reaction intermediate through a hydrogen bond network, enhances the electron transfer efficiency, and significantly improves the color developing sensitivity; the aryl / heteroaryl substituent optimizes the color contrast through the conjugation effect, and meanwhile, the synergistic effect of the hot-melt filler ensures the stability of the system. Compared with a traditional color developing agent, the color developing agent has the advantages of low-temperature activation, high color developing intensity and excellent weather resistance, is suitable for the fields of thermal printing, anti-counterfeiting materials and the like, and overcomes the defects of high reaction temperature and insufficient stability in the prior art.

The invention discloses a device and a method for realizing low-carbon-nitrogen-ratio sewage autotrophic and heterotrophic coupled deep nitrogen and phosphorus removal based on a continuous flow membrane aeration bio-membrane reactor. A hollow fiber membrane is arranged in the continuous flow reactor, and an oxygen concentration gradient is formed through a bubble-free membrane aeration technology. In the biomembrane area, spatial partitions of functional bacteria such as nitrifying bacteria and anaerobic ammonium oxidation bacteria are established, and the two anoxic areas realize efficient nitrogen removal through short-cut denitrification coupling anaerobic ammonium oxidation (PD / A) and synchronous nitrification and denitrification. In the aspect of phosphorus removal, the system adopts an anaerobic-aerobic operation mode, phosphorus-accumulating bacteria release phosphorus anaerobically and absorb excessive phosphorus aerobically, and finally, phosphorus removal is realized through residual sludge discharge. The system integrates an internal carbon source extraction process, recovers a sludge carbon source and supplements an electron donor required by denitrification, and reduces the operation cost and carbon emission. The continuous flow MABR denitrification system enhances the denitrification efficiency of the PD / A system, is suitable for large-scale operation, and efficiently and stably realizes deep denitrification of a low-carbon-nitrogen-ratio urban sewage treatment plant.

The invention discloses a device and a method for synchronously removing hydrogen sulfide waste gas and nitrate wastewater by using a sulfur autotrophic denitrification technology, and belongs to the technical field of biological deodorization and sewage treatment. The device mainly comprises a water tank, a sequencing batch reactor (SBR), a washing tower, a water pump, a fan and the like which are connected in sequence. The method comprises the following steps: the discharged hydrogen sulfide waste gas enters a washing tower and is contacted and absorbed with circularly flowing absorption liquid to form mixed liquid mainly comprising S < 2-> and S < 0 >; the mixed solution and nitrate wastewater (or secondary effluent of a municipal sewage treatment plant taking nitrate nitrogen as a main pollutant) enter an SBR (sequencing batch reactor) together, and autotrophic nitrogen removal is carried out through a sulfur autotrophic denitrification way by taking reduced sulfur (S2-and S0 as main components) in the mixed solution as electron donors. According to the method, the hydrogen sulfide waste gas and the nitrate waste water are economically, efficiently and synchronously removed finally, and a brand new thought is provided for combination of biological deodorization and deep denitrification of urban sewage.

The invention belongs to the technical field of luminescent polymers, and particularly relates to a long-afterglow polymer material as well as a preparation method and application thereof. The long-afterglow polymer material is successfully prepared by taking tris (4-boric acid frequency alcohol ester phenyl) amine as a luminescence center and an electron donor and aromatic polyester with strong electron accepting capability as a polymer matrix. Wherein the tri (4-boric acid frequency alcohol ester phenyl) amine rich in electrons interacts with the aromatic polyester with strong electron-withdrawing property, so that the non-radiative transition process of excitons is effectively slowed down, and further, the long afterglow effect which can reach 12 hours at most is realized. Particularly, when the long-afterglow polymer material is excited by sunlight, the afterglow intensity is remarkably improved, green afterglow can be maintained for 6 hours, and meanwhile, the material also shows excellent flexibility and transparency. In addition, the preparation process of the material is simple and convenient, and the material is expected to be applied to the fields of flexible display, anti-counterfeiting, information storage and wearable intelligent equipment.

An in-situ biogas purification method for anaerobic digestion of sludge based on exogenous hydrogen supply relates to the field of solid waste resource utilization and renewable energy technology. The purpose of the present invention is to solve the problems of low hydrogen solubility and insufficient carbon dioxide bioconversion in the biogas purification process, as well as the inhibitory effect of excessive hydrogen dosage on biogas production by anaerobic digestion of sludge. The present invention utilizes the anaerobic digestion process of sludge in an anaerobic environment to produce biogas, and adds hydrogen to the process by direct hydrogen input or zero-valent iron corrosion, so that hydrogen penetrates into the liquid phase. The hydrogenotrophic methanogens in the system use hydrogen as an electron donor and carbon dioxide in the biogas produced by anaerobic digestion of sludge as an electron acceptor to convert hydrogen and carbon dioxide into methane to achieve in-situ biogas purification. The present invention can obtain an in-situ biogas purification method for anaerobic digestion of sludge based on exogenous hydrogen supply.

The invention discloses a sulfur disproportionation-mediated low-temperature high-efficiency low-carbon denitrification and synchronous ammonium recovery method for sewage, belongs to the field of sewage treatment, and aims to solve the problems that an existing autotroph denitrification process cannot adapt to water quality fluctuation and seasonal variation and is poor in engineering applicability. Polyculture denitrification and elemental sulfur disproportionation (SD) are used as an effective enhanced denitrification scheme and are applied to a low-temperature SDAD system of actual sewage. Sulfide and polysulfide generated in situ through elemental sulfur disproportionation reaction and low-concentration sodium acetate under the polyculture condition are used as supplementary electron donors, so that the denitrification rate is remarkably increased. The process of reducing dissimilatory nitrate into ammonium (DNRA) in the SD-MixBNR system is beneficial to emission reduction of greenhouse gases while realizing ammonium recovery. According to the method, the SD-MixBNR system can be promoted to be widely applied to actual engineering projects under the carbon neutralization background, and the stability and adaptability of the SD-MixBNR system in the face of various water quality fluctuations and seasonal changes are enhanced.

The present application relates to the field of municipal wastewater treatment, and particularly relates to a highway service area wastewater treatment device and method based on AOOA-MBBR process. The device comprises a first anoxic tank, a first aerobic tank, a second aerobic tank and a second anoxic tank connected in sequence, and is filled with MBBR filler respectively, and the volume of the filled MBBR filler is taken as the effective volume; the first aerobic tank and the second aerobic tank are respectively provided with an aeration device; the first anoxic tank is used for inoculating hydrolytic bacteria and denitrifying bacteria; the first aerobic tank is used for inoculating hydrolytic bacteria, nitrifying bacteria and denitrifying bacteria; the second aerobic tank is used for inoculating nitrifying bacteria, and the second anoxic tank is used for inoculating hydrolytic bacteria and denitrifying bacteria; the second aerobic tank is connected with the first anoxic tank through a reflux pipe, and the reflux pipe is provided with a reflux power assembly. The present application solves the problems of existing highway service wastewater treatment with extremely low carbon-nitrogen ratio, such as the need for additional carbon source / electron donor, high operation cost, poor denitrification effect and high sludge yield.

The present invention relates to the technical field of photoelectric devices, in particular to a self-assembled monomolecular layer material based on a conjugated linker group, a preparation method therefor, and a solar cell. The chemical structural general formula of said self-assembled monomolecular layer material is shown as (1), wherein an electron donor is one of electron-rich groups and derivatives thereof, and L is a conjugated linker group. The introduction of the conjugated linker group into the self-assembled monomolecular layer material to replace a non-conjugated alkyl linker group can effectively achieve electron delocalization, thereby enhancing the intrinsic stability and hole extraction and transport capability of molecules in monomolecular self-assembled layers. In addition, the rigid structure thereof remarkably improves the degree of order and the density of molecular arrangement of monomolecular self-assembled layers. Moreover, the self-assembled monomolecular layer material can form dense monomolecular self-assembled layers on the surfaces of conductive substrates, thereby improving interface contact and passivating interface defects; and said material can form dipoles on the surfaces of the conductive substrates, thereby improving the surface work function and promoting hole transport.

The present disclosure provides an alignment method and application of a cyanobiphenyl liquid crystal composite doped with an organic donor material. The organic small molecule is doped in the host cyanobiphenyl liquid crystal, and the small molecule donor / cyanobiphenyl liquid crystal mixture is directionally induced to assemble by virtue of the large surface energy difference between the superhydrophobic structured substrate and the superhydrophilic flat substrate. The liquid crystal molecules form a uniform arrangement under the action of the liquid bridge, driving the self-assembly of the small molecule donor to be embedded in the cyanobiphenyl liquid crystal, forming a structure of electron donor-donor, enhancing the conductivity of the liquid crystal composite device, studying the influence of the surface tension of the solvent on the performance of the composite, and giving a direction for the selection of the solvent. Compared with the methods of inducing the alignment of liquid crystal molecules and donor small molecules by using electric fields, magnetic fields, photolithography, capillary methods, etc., this method is simpler and more feasible, easy to transfer, the circuit pattern is easy to design, and has good stability.

IR-sensitive lithographic printing plate precursors provide a stable print-out image using a unique IR radiation-sensitive composition in an infrared radiation-sensitive image-recording layer. This IR radiation-sensitive composition includes: (1) a free radical initiator composition that comprises an electron-donating agent; (2) a free radically polymerizable composition; and (3) a color-changing compound that is represented by the Structure (I) having a conjugated carbon chain between the aromatic terminal groups. The compound also has a —SO2—R3 group wherein R3 represents alkyl, aryl or heteroaryl groups. After IR imaging, these precursors exhibit desirable printout images both fresh and after dark storage. The precursors can be developed off-press or on-press.

The invention discloses preparation of a phenanthroline-based covalent organic framework photocatalyst and application of the phenanthroline-based covalent organic framework photocatalyst in photocatalytic production of hydrogen peroxide. According to the method, a hydrogen peroxide production experiment is carried out in a water-oxygen system or a benzyl alcohol-water-oxygen system by taking phenanthroline-based COF as a photocatalyst. According to the invention, through regulation and control of molecular flatness engineering, an electron-rich phenanthroline unit (Phen) anchored by a pyridine expansion plane and electron-deficient triazine (TTA) are integrated into a COF skeleton, and a novel electron donor-acceptor (D-A) type COF is synthesized. The COF has the advantages of proper energy band structure, excellent photo-induced electron and hole separation efficiency, strong D-A interaction, good hydrophilicity and the like, and the efficiency of photocatalytic hydrogen peroxide production reaction within a short time is greatly improved. The invention provides a use method of the COF photocatalyst which is cheap, convenient, rapid, efficient and environment-friendly, and has a potential application prospect.

The invention relates to the technical field of luminescent materials, and discloses an aggregation-induced emission material, nanoparticles as well as a preparation method and application thereof, the structural general formula of the aggregation-induced emission material is as follows: # imgabs0 #, R is selected from one of the following structures: # imgabs1 # aggregation-induced emission material takes a pyridine group as an acceptor unit, and the acceptor unit is selected from one of the following structures: 1 # imgabs2 # aggregation-induced emission material; a carbon-carbon double bond and a thiophene unit are used as pi bridges, and diphenylamine, bis (4-ethylphenyl) amine and bis (4-(tert-butyl) phenyl) amine are used as strong electron donors. The donors not only provide strong electron supply ability, but also become efficient rotors due to highly twisted molecular conformation, and endow the aggregation-induced emission material with long emission wavelength and aggregation-induced emission activity.

The invention provides an aza-BODIPY dye molecule with near-infrared two-region absorption, 4-cyanophenyl is used as an electron acceptor for modification at 1, 7 sites, thiophene-triphenylamine is used as a strong electron donor for modification at 3, 5 sites, an aza-BODIPY dye with extremely strong intramolecular charge transfer is constructed, the absorption spectrum of the aza-BODIPY dye is extended to 1100 nm, and after the aza-BODIPY dye molecule forms an aggregation state, the absorption spectrum of the aza-BODIPY dye molecule has strong absorption spectrum. The aza-BODIPY dye molecule has the advantages that the absorption spectrum of the aza-BODIPY dye molecule is extended to 1250nm, the aza-BODIPY dye molecule has good absorption in an NIR-II region, and the nano-particles prepared by self-assembling the aza-BODIPY dye molecule and the amphiphilic polymer F127 show 46.2% of high photothermal conversion efficiency under the excitation of 1060nm laser, can be used for photoacoustic imaging and photothermal therapy, and can be used for preparing the nano-particles. The problems that tissue penetrability is insufficient and deep tumors cannot be diagnosed and treated in traditional tumor light diagnosis and treatment are solved.

The invention relates to the technical field of constructed wetlands, in particular to a constructed wetland iron-carbon-manganese composite filler capable of efficiently removing nitrogen and phosphorus. According to the filler, the manganese ore layer is arranged behind the iron-carbon micro-electrolysis layer, the microenvironment in the iron-carbon micro-electrolysis constructed wetland is adjusted through manganese ore, iron and manganese exist at the same time and can serve as electron donors for microbial denitrification, the effect is better than that of single use of iron, meanwhile, the oxidation capacity of high-valence manganese ions is utilized, and the denitrification efficiency is improved. The ammonia nitrogen in the iron oxide carbon wetland is inhibited or re-oxidized, so that the total nitrogen removal capability of the wetland is enhanced, and efficient nitrogen removal is realized; the manganese ore is large in specific surface area and can adsorb iron ions in water, iron and manganese separated out of the water are effectively removed, and the problem that the dissolution concentration of the iron ions is high is solved; phosphate radicals are adsorbed and removed mainly through ligand exchange with hydroxyl on the surface of manganese nodule, iron ions and ferrous ions dissolved out from the scrap iron are combined with influent phosphate to form precipitates such as iron phosphate, and a very good effect on removal of total phosphorus is achieved.

The invention relates to the field of sewage treatment, in particular to a sewage treatment system capable of recycling sulfur based on sulfur autotrophic denitrification, which comprises a pretreatment tank, an aerobic tank, a sulfur autotrophic denitrification reactor, an anaerobic tank and a secondary sedimentation tank which are sequentially connected, and the part of the secondary sedimentation tank containing supernatant mixed liquor is communicated with the aerobic tank; the anaerobic tank contains sulfate reducing bacteria, and sulfate radicals (SO4 < 2->) in the sewage discharged from the sulfur autotrophic denitrification reactor are reduced into S < 2-> by the anaerobic tank under the action of the sulfate reducing bacteria; water containing S < 2-> in the anaerobic tank enters a secondary sedimentation tank, and supernatant mixed liquor in the secondary sedimentation tank flows back to the aerobic tank; sulfur oxidizing bacteria are contained in the aerobic tank, and S < 2-> in the liquid flowing back from the secondary sedimentation tank is oxidized into S < 0 > and S2O3 < 2-> by the aerobic tank under the action of the sulfur oxidizing bacteria. According to the scheme, the problem that more SO4 < 2-> is generated in the current sulfur autotrophic denitrification process is solved, meanwhile, the consumption of electron donors is reduced, and the cost is reduced.

The invention discloses a preparation method of a boron-dipyrrolyl porous organic polymer and application of the boron-dipyrrolyl porous organic polymer in photocatalytic production of hydrogen peroxide. The boron-dipyrrolyl porous organic polymer is a cyano-containing boron-dipyrrolyl porous organic polymer. The preparation method comprises the following steps: carrying out a Sonogashira coupling reaction on an electron acceptor boron dipyrromethene derivative and an electron donor compound to prepare a boron dipyrromethene-based porous organic polymer containing acetylenic bonds; and carrying out free radical reaction modification on the BODIPY porous organic polymer containing the acetylenic bond to prepare the BODIPY porous organic polymer containing the cyano group. The preparation method comprises the following steps: polymerizing an electron acceptor boron dipyrromethene and different electron donors by utilizing a Sonogashira coupling reaction to obtain a boron dipyrromethene-based porous organic polymer containing an acetylenic bond, and carrying out post-modification on the acetylenic bond through a free radical reaction to obtain the boron dipyrromethene-based porous organic polymer containing cyano groups with good photocatalytic performance. The polymer can be used for photocatalytic production of hydrogen peroxide in water.

The invention discloses polypropylene resin, a preparation method thereof and a polypropylene material, the polypropylene resin is a binary copolymer of propylene and 1-hexene, and the impact strength at-20 DEG C is 3-7 KJ / m < 2 >. The polypropylene resin is prepared by adopting a solution polymerization method, and a titanium-containing Ziegler-Natta catalyst is adopted and comprises a main catalyst, a co-catalyst and an external electron donor; the internal electron donor in the main catalyst comprises a dicarboxylic acid ester compound and a 1, 3-diether compound. The polypropylene resin itself has high low temperature impact strength and low haze. The antioxidant, the deacidification agent and the anti-reflection agent are simultaneously added into the polypropylene resin base material, and the prepared polypropylene material has the characteristics of high low-temperature impact strength, high transparency, low ash content and the like, and meets the preparation of injection molding products in the fields of medical tube materials, medical packaging, food packaging and the like with relatively high requirements on low-temperature impact and transparency.

The invention relates to the field of covalent organic framework materials and photocatalytic organic reactions, in particular to a COF material for improving photo-generated charge separation and a preparation method and application of the COF material. According to the present invention, 1, 3, 5-tri (4-aminophenyl) benzene (TAPB) is adopted as a donor unit, and a novel D-A type multi-bibenzothiadiazole TPAB-DTT-COF covalent organic framework material using a conjugated unit 2, 1, 3-benzothiadiazole as an acceptor unit is prepared; tAPB is an excellent electron donor unit which is widely used at present, polybiphenyl thiadiazolyl is an electron withdrawing group, the combination and matching of TAPB and polybiphenyl thiadiazolyl enhance the electronegativity difference value in molecules, reduce the exciton binding energy, promote the transfer of electrons from TAPB to a DTT unit, enhance the in-plane transmission and exciton separation efficiency, dissociate excitons under illumination, and improve the efficiency of electron transfer. The TAPB-DTT-COF material has the advantages that the TAPB-DTT-COF material has obvious photocurrent response signal, more obvious charge transfer performance and good photocatalytic performance;

The invention provides a biological method for synergistically immobilizing methane and carbon dioxide, which comprises the following steps: mixing activated sludge with microalgae, continuously introducing gas, and forming an algal-bacterial symbiont under the condition of continuous illumination; the method comprises the following steps: putting the algal-bacterial symbiont into a reactor, pumping sewage, introducing gas, and carrying out periodic operation according to a water feeding-aeration-precipitation-drainage mode; wherein the gas comprises methane and carbon dioxide, and the sewage comprises a carbon source, a nitrogen source and a phosphorus source. According to the method, the bacteria-algae particles can be obtained through culture, and the bacteria-algae particles can provide electrons for denitrification by using the soluble methane as an electron donor, so that the purposes of synchronously removing the soluble methane and denitrifying are achieved, and the denitrification process is optimized. The bacteria-algae particles can also realize fixation of methane and carbon dioxide, the sewage treatment process is optimized, and the problems that soluble methane is difficult to remove and carbon emission is high in the existing sewage treatment process are solved.

A long-persistent luminescence emitter containing a polymer that contains, relative to the total molar amount of an electron donor structural unit and an electron acceptor structural unit therein, 70 mol % or more of an electron donor structural unit and less than 30 mol % of an electron acceptor structural unit, or containing a polymer that contains, relative to the total molar amount of an electron donor structural unit and an electron acceptor structural unit therein. 70 mol % or more of an electron acceptor structural unit and less than 30 mol % of an electron donor structural unit. The emission decay after stopping light irradiation to the emitter is power law decay.

The application discloses a kind of synchronous denitrification and phosphorus removal light materials and its preparation and application method, belong to environmental functional materials and sewage treatment technical field.The application is obtained by fully melting and dispersing sulfur and iron-based component, and the iron-based component is a mixture of pyrite and calcium-magnesium carbonate.The molten mixture is foamed to form a synchronous denitrification and phosphorus removal light material.The synchronous denitrification and phosphorus removal light material has high porosity, large specific surface area, light weight and high reactivity.The light material is used as a microbial carrier and an electron donor for biochemical reactions, and is applied to fixed bed, fluidized bed and other reactors for sewage treatment.The light material has good microbial adhesion performance, high denitrification rate and good phosphorus removal effect.

The invention provides a naphthalimide compound as well as a preparation method and application thereof, and belongs to the technical field of organic compounds. N-(4-tert-butylphenyl) naphthalimide is used as an acceptor unit (a group A), 9, 9-dimethyl acridine, 9, 9-diphenyl acridine, phenoxazine, phenothiazine, 7H-benzo [c] carbazole or 9H-dibenzo [a, c] carbazole is used as an electron donor unit (a group D), and the donor unit and the acceptor unit are connected through ortho-positions or meta-positions of benzene bridges or derivatives thereof; the formation of the 3CT state depends on the CT effect between the D group and the A group, the specific D group and the benzene bridge unit are selected to control the distance and the dihedral angle between the D unit and the A unit so as to realize the regulation and control of the service life of the 3CT state, and meanwhile, the fine adjustment of the energy of the 3CT state is realized by virtue of the substituent group on the benzene bridge unit, so that the service life of the 3CT state is prolonged. Therefore, the naphthalimide compound has a long charge transfer triplet state lifetime in a single molecule state.

According to the alkoxy magnesium carrier Ziegler-Natta catalyst and the preparation method thereof, alkoxy magnesium is activated and then loaded with titanium, fluorene diether is selected as an internal electron donor, the obtained catalyst is subjected to post-treatment, and finally the alkoxy magnesium carrier Ziegler-Natta catalyst with excellent performance is prepared. The raw material utilization rate is higher, the adding amount of required titanium tetrachloride is smaller, the steps are simpler, the preparation conditions are mild, the isotactic index of the prepared homo-polypropylene is higher, and the activity of the prepared catalyst is higher.