40results about How to "Inhibitory complex" patented technology

The invention relates to the technical field of photocatalytic processes, in particular to a catalyst for preparing methanol through photocatalytic reduction of CO2 as well as a preparation method and application of the catalyst. The catalyst comprises a composite carrier and active sites dispersed on the surface or in pores of the composite carrier, the composite carrier is of a heterojunction composite structure formed by a hollow TiO2 sphere and MCN, the hollow TiO2 sphere comprises a shell layer and a spherical cavity structure located in the shell layer, the shell layer is formed by TiO2 nanoparticles, and the MCN has a mesoporous pore structure; a II-type or Z-type heterojunction interface is formed between the hollow TiO2 spheres and the MCN through physical contact and chemical action; the active sites comprise copper nano species, sulfur vacancy defects and amino groups; the copper nano species are copper nano particles or clusters, and the valence state of copper is 0 and / or + 1 valence amino is grafted on the surface of the composite carrier through an organic long chain. The catalyst provided by the invention can greatly improve the yield and selectivity of methanol prepared by photocatalytic reduction of carbon dioxide.

The application provides a TOPCon cell and a preparation method thereof and a photovoltaic system, and relates to the field of solar cells. The TOPCon cell comprises a P-type silicon-based substrate and an N+ layer. The surface of the P-type silicon-based substrate extends in a direction away from the P-type silicon-based substrate and comprises, in sequence from the P-type silicon-based substrate, an N+ emitter layer, a silicon oxide layer, a first aluminum oxide layer, and a second aluminum oxide layer. The first aluminum oxide layer comprises a boron-doped aluminum oxide layer, and the second aluminum oxide layer comprises a phosphorus-doped aluminum oxide layer. The TOPCon cell adopts a double-layer gradient-doped aluminum oxide structure. The first aluminum oxide layer close to the P-type silicon-based substrate is a nanocrystalline aluminum oxide doped with boron, the B-O bond is used to enhance the interface chemical passivation, and the density of silicon dangling bonds is reduced. The second aluminum oxide layer close to the N+ emitter layer is an amorphous aluminum oxide doped with phosphorus. The phosphorus doping concentration gradient decreases, the electric field distribution can be controlled by P doping, and the hole recombination is inhibited.

The invention discloses a Co3O4-Cu2-xS composite photo-thermal catalyst as well as a preparation method and application thereof. The composite photo-thermal catalyst is prepared by taking a surfactant as a bridge and compounding Co3O4 and Cu2-xS. The composite photo-thermal catalyst has a reduced band gap width, can effectively promote migration and separation of photon-generated carriers, enhances the absorption efficiency of visible light-near infrared light, and shows excellent photo-thermal conversion performance. The composite photo-thermal catalyst can be used for constructing a Co3O4-Cu2-xS + PMS + NIR catalytic system, and peroxymonosulfate is activated under the irradiation of near-infrared light so as to degrade antibiotics in water. Experiments prove that the Co3O4-Cu2-xS + PMS + NIR system disclosed by the invention can achieve the degradation rate of 99% on levofloxacin within 20 minutes, and the generation efficiency of active species is remarkably improved through the synergistic effect of a photothermal effect and interface activation. The catalyst has broad-spectrum degradation activity on various antibiotics, keeps efficient and stable catalytic performance in a wide pH range, and shows excellent ion interference resistance and adaptability to various water bodies.

The application discloses a kind of medical titanium alloy material surface antibacterial functionalization processing methods, first by hydrothermal oxidation and high-temperature sintering processing in titanium alloy material surface construction TiO2 Nanometer sheet, then deposit W 18 O 49 Quantum dots are deposited on the TiO2 Nanometer sheet, and TiO2 / W 18 O 49 Heterojunction is constructed on the surface of titanium alloy.TiO2 / W 18 O 49 Heterojunction can efficiently catalyze the production of reactive oxygen species (ROS) under near-infrared light irradiation, achieving antibacterial function. The TiO2 / W 18 O 49 Heterojunction functionalized titanium alloy material surface, the irregular sheet structure of TiO2 Nanometer sheet can greatly increase the contact area of the material surface and the surrounding solution, and the W 18 O 49 Quantum dots have the characteristics of "single-atom-like catalysis", which can improve the ROS yield and further endow the medical titanium alloy surface with strong photodynamic antibacterial performance.

The invention relates to the field of organic photoelectric materials, in particular to an organic compound, a mixture and an organic photovoltaic device. The invention provides an organic compound as shown in a general formula (I), the compound has a large conjugate plane, and is beneficial to delocalization of electrons and improvement of the glass transition temperature; meanwhile, close packing like linear molecules is inhibited by the three-dimensional structure, so that excessive crystallization is inhibited; finally, the structure of three electron-withdrawing end groups of the organic compound provided by the invention provides a multi-dimensional electron transport channel, improves the electron mobility and inhibits recombination. Therefore, when the compound is used as an acceptor material to be applied to an organic photovoltaic device, excellent photoelectric conversion efficiency is shown.

The application provides a porous carbon nitride photocatalyst and a preparation method and application thereof, and the porous carbon nitride photocatalyst is prepared by the following steps: uniformly mixing and grinding a nitrogen-rich organic material precursor and a gaseous template agent ammonium chloride; performing high-temperature treatment on the mixed precursor by using a microwave-assisted thermal polymerization method, and cooling to room temperature after the reaction is completed; and grinding, washing and drying the obtained product to collect the GCN. The method uses a one-step microwave-assisted thermal polymerization method to make melamine and the mixed precursor of ammonium chloride react, and the rapid thermal shock effect of the microwave field is used to induce the material to form a porous structure; the ammonium chloride is decomposed at high temperature to generate a bubble effect, which effectively inhibits the excessive stacking of carbon-nitrogen planes, induces the formation of a hierarchical porous structure and introduces rich edge defects. The degradation rate constant of the catalyst for cephalosporin antibiotics can reach 4.16 times that of pure g-C3N4, the catalyst has extremely excellent specific removal capacity for tetracycline, has good chemical stability and broad applicability, and can efficiently realize the deep purification of pollutants in water.

The invention discloses a preparation method of a mesoscopic perovskite solar cell and the mesoscopic perovskite solar cell, and belongs to the technical field of mesoscopic perovskite solar cells. The passivation layers are prepared on the surface of the mesoporous spacer layer and the surface of the pore inner wall of the mesoscopic perovskite solar cell, oxygen vacancies on the surface of the mesoporous spacer layer can be effectively reduced, recombination of carriers is reduced, direct contact between the mesoporous spacer layer and a mesoporous membrane layer below the mesoporous spacer layer and a perovskite active layer is prevented, and the performance of the solar cell is improved. The interface of the perovskite crystal is passivated, carrier recombination at the interface of the mesoporous spacing layer and the perovskite active layer and at the interface of the perovskite active layer and the back electrode is inhibited, the carrier transmission life is prolonged, and the cell efficiency is improved.

This invention provides a fluorine-doped ZnIn2S4 photocatalyst, its preparation method, and its application. The fluorine-doped ZnIn2S4 photocatalyst has a spherical nanoflower structure, which is composed of nanosheets arranged in an array. The preparation method includes the following steps: (1) adding ZnCl2, InCl3·4H2O, and thioacetamide to water and stirring to obtain a mixture A; (2) adding a fluorine source to mixture A and mixing thoroughly to obtain mixture B; (3) subjecting mixture B to a hydrothermal reaction, separating the product after the reaction, washing, and drying to obtain the F-ZnIn2S4 photocatalyst. The fluorine-doped ZnIn2S4 photocatalyst exhibits highly efficient photocatalytic activity.

This invention relates to the field of nanoscale full-spectrum photocatalytic materials, and particularly to a method for preparing a molybdenum selenide / oxygen-deficient bismuth oxybromine@gold three-phase Z-type heterojunction photocatalyst. This method solves the problems of low photogenerated electron-hole separation efficiency, narrow full-spectrum response range, and poor stability in existing bismuth-based photocatalysts. The preparation method involves first preparing oxygen-deficient BiOBr nanospheres via a solvothermal method, then directly reacting tetrachloroauric acid with oleylamine in toluene to prepare small-particle-size monodisperse Au nanoparticles, which are then combined with oxygen-deficient BiOBr to prepare a BiOBr@Au nanosphere core-shell structure. Finally, a MoSe2 / oxygen-deficient BiOBr@Au three-phase composite material is prepared via a hydrothermal reaction. The catalyst of this invention exhibits absorption capacity under the full spectrum of light, and simultaneously achieves a synergistic enhancement of carrier separation efficiency and strong redox capability, demonstrating excellent photocatalytic activity and the ability to efficiently degrade pollutants and produce hydrogen.

The application discloses a kind of perovskite laminated solar cell and preparation method thereof, photovoltaic module and photovoltaic device, belong to solar cell technical field.The perovskite laminated solar cell from light-receiving front to light-receiving back successively includes substrate, bottom electrode, first hole transport layer, wide band gap perovskite layer, first electron transport layer, barrier layer, intermediate interconnection layer, narrow band gap perovskite layer, second electron transport layer, hole blocking layer, top electrode;The intermediate interconnection layer includes first sublayer, self-assembled monolayer and second sublayer, first sublayer faces first electron transport layer, second sublayer faces narrow band gap perovskite layer, and self-assembled monolayer is located between first sublayer and second sublayer.The application can inhibit interface scattering and reduce wide-angle reflection loss under oblique incidence, while maintaining excellent electrical transmission to promote carrier transfer and recombination, significantly improve the overall photovoltaic performance of device.

This invention discloses a parallel-interface engineered viologen-based defective carbon nitride composite material, its preparation method, and its applications, belonging to the field of energy catalysis and photochemical materials technology. The material comprises: a defective graphitic carbon nitride support; single-atom platinum catalytic sites supported on the support; and a selenium-containing viologen compound anchored by covalent bonds in a configuration parallel to the support surface. Through a bilateral covalent bonding strategy, viologen molecules are stably anchored in a parallel configuration to the single-atom platinum-modified defective carbon nitride surface, constructing a highly efficient and stable "electron bridge" structure, significantly enhancing interfacial bonding and photogenerated electron transport efficiency. This composite material exhibits excellent photocatalytic hydrogen evolution activity and efficient coupling ability with benzylamine oxidation under visible light, and its activity retention rate reaches over 92% after 144 hours of cycling. It provides a new paradigm for solving the problem of poor interfacial stability in photocatalysts and has significant application prospects in the field of solar fuel synthesis.

This invention discloses a method for preparing a TNTs / NiO@CoPi array electrode (TNCP) for photoelectrocatalytic water splitting, belonging to the field of photoelectrocatalytic new energy materials technology. The invention first prepares a highly ordered anatase TiO2 nanotube array (TNTs) using secondary anodic oxidation, then loads Ni nanoparticles onto the surface and inside the nanotubes via constant current electrodeposition, followed by high-temperature calcination to generate p-type NiO, constructing a TNTs / NiO p-n heterojunction (TN). Finally, it uses AM 1.5 simulated sunlight to selectively deposit an amorphous CoPi cocatalyst, where the CoPi only coats the NiO nanospheres without blocking the TiO2 mass transfer channels. This invention utilizes the p-n heterojunction to broaden the full-spectrum light absorption from 250 to 800 nm, and CoPi acts as a hole-trapping layer to suppress electron-hole recombination, significantly reducing interfacial charge transport impedance; the steady-state photocurrent of the TNCP deposition sample reaches 0.06 mA·cm⁻. 2 It is three times that of pure TNTs. This process involves no precious metals or highly toxic corrosive solvents, and the reaction conditions are mild. The electrodes produced can be used for photoelectric water splitting to produce hydrogen, photoelectric oxidation of organic pollutants, and ethylene glycol photoelectric fuel cells. They exhibit excellent cycle stability and have promising prospects for large-scale industrial applications.

The invention discloses a preparation method of a catalyst for producing hydrogen peroxide through oxygen deficiency tandem piezoelectric-mechanical redox, and the preparation process of the catalyst comprises the following steps: firstly, constructing a zinc oxide substrate with a litchi-shaped structure through a water-phase thermally-induced self-assembly reaction; then introducing oxygen defects with controllable content on the surface of zinc oxide by adopting a liquid-phase mediated chemical reduction mode; and finally, performing in-situ auto-polymerization on the surface of the defective zinc oxide to form a polydopamine coating, thereby obtaining the target catalyst. The catalyst can efficiently and highly selectively prepare hydrogen peroxide through ultrasonic excitation under the conditions of pure water and normal temperature, has the advantages of mild reaction conditions, high generation rate, good stability, environmental protection and the like, and is suitable for the application scene of distributed hydrogen peroxide in-situ preparation.

This invention proposes an Au@SnO 2‑x -SiO2 photocatalyst, preparation method and application. This method uses SiO2 nanospheres as a support and employs an adsorption method to enable Sn... 2+ Adsorbed on SiO2 nanospheres, utilizing Sn 2+ The reducing property of Au@SnO reduces chloroauric acid to gold particles, making Au@SnO 2‑x Au@SnO was obtained by growing on the surface of SiO2 nanospheres. 2‑x -SiO2 composite material. The Au@SnO prepared in this invention... 2‑x The Au@SnO composite material has a larger specific surface area than SiO2 nanomaterials, thus reactants are more easily adsorbed, and electron-hole recombination is effectively suppressed, thereby improving its photocatalytic performance. 2‑x The SiO2 composite material exhibits excellent photocatalytic water splitting and hydrogen production performance under simulated sunlight conditions.

This invention relates to an In2S3 / In2MnS4 photoelectrocatalyst for the production of H2O2 or HClO and its preparation method, belonging to the field of high-value-added chemicals and catalyst production technology. In2S3 hollow hierarchical microtubes are obtained through a solvothermal method, and Mn is converted into hydrogen through ion exchange. 2+ Partial exchange In 3+ An In2S3 / In2MnS4 photocatalyst was obtained. An In2S3 / In2MnS4 / PVDF / NF photocathode was obtained by loading In2S3 / In2MnS4 onto PVDF-modified nickel foam, and an In2S3 / In2MnS4 / CP photoanode was obtained by drop-coating In2S3 / In2MnS4 onto carbon paper. Under visible light irradiation and a specific additional bias voltage, the yields of H2O2 and HClO produced by the catalytic process reached 2107.8 μmol / L and 28.5 mg / L, respectively, within 90 min. This invention is simple, efficient, and low-cost, and can be applied to the photoelectric production of H2O2 and HClO.

The invention discloses a preparation method of a Ni-In2Se3-SnSe2 heterojunction photocatalyst. The preparation method comprises the following steps: synthesizing a Ni-In2Se3-SnSe2 precursor by adopting a one-step solvothermal method; and then, the precursor is subjected to calcination treatment under the protection of inert gas, and finally, the Ni-In2Se3-SnSe2 heterojunction photocatalyst is obtained. The core of the In2Se3-SnSe2 heterojunction is that dual regulation and control of an electronic structure and an interface of the In2Se3-SnSe2 heterojunction are synchronously realized through Ni doping. On one hand, Ni atoms replace part of In sites to form an electron trap, photo-induced electrons are effectively captured, and electron-hole recombination is inhibited; and on the other hand, lattice mismatch caused by Ni doping promotes formation of a stable In-Se-Sn interface chemical bond between In2Se3 and SnSe2, an efficient cross-interface charge transfer channel is constructed, and a carrier migration barrier is greatly reduced, so that synergistic improvement of the photon-generated carrier separation efficiency is realized. The method is simple in preparation process, mild and controllable in reaction condition and environment-friendly, and has a good industrial application prospect.

The application relates to the technical field of photocatalysts, in particular to a TiO2-MOFs photocatalyst and a preparation method and application thereof, and comprises the following steps: adding TiO2 nanoparticles into deionized water to obtain a solution A through dispersion, adding modified MIL-88A / GO into the solution A to obtain a mixed solution, stirring the mixed solution, washing the mixed solution through centrifugal separation of ethanol and deionized water alternately, and freeze-drying to obtain a modified TiO2-MOFs photocatalyst. Through the compounding of the TiO2 nanoparticles and the modified MIL-88A / GO, the adsorption-catalysis synergistic effect is realized, the modified MIL-88A / GO material has the characteristics of high specific surface area, porosity and controllable pore size, can efficiently adsorb pollutants in organic wastewater, provides a high-concentration reaction environment for the photocatalytic reaction of the TiO2 nanoparticles, and the electron-hole pairs generated under the excitation of photons of the TiO2 nanoparticles as the efficient photocatalyst can quickly oxidize and degrade the adsorbed pollutants.

The invention discloses a benzo five-membered aromatic heterocyclic carbazolyl ammonium salt and a derivative thereof for passivating a perovskite layer, and preparation and application thereof, and belongs to the technical field of perovskite solar cells. Through a solution spin-coating process, an interface modification layer is formed on the surface of perovskite, and in-situ passivation is realized. The ammonium salts and the derivatives thereof can effectively passivate surface defects of a perovskite film, such as passivating uncoordinated Pb < 2 + > and filling iodine vacancies, so that non-radiative recombination of a perovskite layer is inhibited, extraction of carriers is promoted, and the open-circuit voltage and filling factors of a perovskite solar cell are improved. Meanwhile, large-volume spacer cations can be gathered at the grain boundary, so that the quality of the grain boundary is improved, and ion migration is inhibited. Besides, the benzo five-membered aromatic heterocyclic carbazolyl ammonium salt and the derivative thereof are used as the passivation layer, so that erosion of moisture to the perovskite layer can be blocked, and the humidity stability of the device is remarkably enhanced. The photoelectric property and the stability of the perovskite solar cell are improved, and the method is suitable for preparing the efficient and stable perovskite solar cell.

The invention discloses a preparation method of a photocatalyst material, and belongs to the technical field of material preparation and pollution treatment. The method comprises the following steps: by taking bismuth citrate as a multifunctional precursor, firstly mixing the bismuth citrate with a titanium source, a manganese source and a cerium source in a solvent for gelation, then carrying out solvothermal reaction to form an intermediate, and finally carrying out programmed temperature control pyrolysis in an inert and oxygen-containing atmosphere. In the pyrolysis process, carbon element doping and manganese and cerium bimetal ion lattice embedding are synchronously realized, and a graded porous folded structure is constructed in situ by utilizing precursor decomposition gas. The method integrally solves the problems of weak visible light response, low mass transfer efficiency and poor stability of a traditional material, and the prepared material shows efficient inhibition and degradation efficiency on mold such as aspergillus flavus under simulated granary low-illumination visible light.

The application relates to the technical field of photocatalytic material preparation, and discloses a preparation method of calcium hydroxystannate material based on morphology reconstruction to enhance intrinsic light absorption, which comprises the following steps: firstly, a regular polyhedral calcium hydroxystannate precursor powder is prepared by adopting a liquid phase precipitation method; subsequently, deionized water and anhydrous ethanol are mixed to construct a solvent cage medium, and a low-concentration etching working solution is prepared by adding an organic weak acid; the precursor is added into the working solution for constant-speed stirring, morphology reconstruction is carried out on the crystal surface by using the solvent cage shielding effect and acid etching effect, and solid-liquid separation is carried out immediately after the reaction is completed; the obtained precipitate is washed and dried to obtain the calcium hydroxystannate material with a surface micro-rough structure. Through a mild and limited etching process, a defect layer rich in oxygen vacancies is constructed in situ on the crystal surface, the micro-morphology is reconstructed into an octagonal shape, the band gap width is effectively reduced, the light absorption edge is red-shifted, carrier recombination is inhibited, and therefore the photocatalytic mineralization performance of the material under visible light is improved.

The application discloses a water purifying agent preparation process for organic matter degradation in fish culture tail water, which comprises the following steps: (1) placing vitrified microbeads in hydrofluoric acid for stirring treatment to perform surface etching, and then separating the vitrified microbeads to wash and dry, so as to obtain pretreated vitrified microbeads; (2) mixing the pretreated vitrified microbeads, tetraethyl titanate and anhydrous ethanol, and then performing ultrasonic treatment, and then mixing the obtained microbeads with a carbon source, urea and clean water to perform hydrothermal reaction, so as to obtain a catalyst; and (3) mixing the catalyst, plastic powder, modified halloysite powder, original halloysite powder and glycerol diluent, and then granulating, and then heating and keeping warm of the obtained granular matters in a protective atmosphere, and then placing the obtained granular matters in clean water to stand, and then separating the granular matters to dry, so as to obtain the water purifying agent, which can not only perform efficient photocatalytic degradation on organic matter degradation, but also can be recycled and reused.

The application provides a back contact solar cell, a laminated cell and a photovoltaic module. The back contact solar cell comprises: a second surface of a semiconductor substrate has a first sub-region and second sub-regions located on both sides of the first sub-region, a plurality of first texture structures are arranged in the first sub-region, a plurality of first polishing structures are arranged in the second sub-regions, the second sub-regions protrude in a direction away from the first surface relative to the first sub-region, and the distance between the second sub-regions and the bottom of the first texture structure in the first sub-region is 2-5 mu m. The second surface of the semiconductor substrate has a third sub-region and fourth sub-regions located on both sides of the third sub-region, a plurality of second texture structures are arranged in the third sub-region, a plurality of second polishing structures are arranged in the fourth sub-regions, the fourth sub-regions protrude in a direction away from the first surface relative to the third sub-region, and the distance between the fourth sub-regions and the bottom of the second texture structure in the third sub-region is 2-5 mu m.

The invention discloses a composite photocatalytic material with excess sludge as a carrier and a preparation method and application thereof.Porous conductive carbon obtained after carbonization and acid pickling of the excess sludge serves as a framework of the material, a core-shell structure unit composed of a CdS nanometer core and a C3N5 shell layer grows on the surface of the framework in situ, and an S-schema heterojunction is formed. The preparation method mainly comprises three steps of carbonization and purification of sludge, hydrothermal in-situ growth of CdS and vapor deposition wrapping of a C3N5 shell layer. The material fully utilizes the charge separation advantage of a conductive network and heterojunction of sludge carbon, shows excellent hydrogen evolution activity and stability under visible light, realizes high-value utilization of excess sludge, and provides a new material for efficient and low-cost photocatalytic hydrogen production.

The invention discloses a preparation method of a solar blind ultraviolet photoelectric detector based on an STO-Ga2O3 heterojunction. The preparation method comprises the following steps: 1) depositing a gallium oxide thin film on a strontium titanate substrate by adopting a magnetron sputtering method; 2) performing post-annealing treatment on the deposited gallium oxide thin film in an inert atmosphere; and 3) preparing a metal interdigital electrode on the surface of the annealed gallium oxide thin film to obtain the solar-blind ultraviolet photoelectric detector. According to the invention, the excellent lattice matching characteristic between the STO substrate and the Ga2O3 film is utilized to induce growth of the Ga2O3 film with high quality and low defect, and the Ga2O3 film and the STO substrate form a unique I-type energy band heterojunction. The structure can effectively limit carriers, obviously reduce the dark current of the device, and improve the collection efficiency of photon-generated carriers at the same time. The device shows extremely high detection rate, extremely high light-dark current ratio and high response speed under low working voltage, and an ideal solution is provided for next-generation high-performance and low-power-consumption solar-blind ultraviolet detection.

The application discloses a kind of adsorption type photoelectric catalytic degradation processing device, it is related to the technical field of waste gas treatment, including reaction box, the one end of reaction box is provided with gas inlet, the other end is provided with gas outlet, at least one airflow distributor is provided in reaction box, at least one active carbon fiber reel is provided on the end face of airflow distributor, the one end of reel is gas inlet open, the other end is closed, the inside of airflow distributor and reel is provided with light source, photocatalyst is attached to reel, electrode is provided on reel and can apply fixed bias voltage.The reel of active carbon fiber is arranged in the application, the residence time of waste gas in the reaction device can be increased, the adsorption of active carbon fiber makes waste gas contact with photocatalyst more fully;Active carbon fiber reel surface coupling electric field can strongly inhibit photoelectron hole pair recombination, improve catalyst surface active free radical group concentration, increase catalytic efficiency.

This invention discloses a supported Au1Cu 24 Preparation of / g-C3N4 catalyst and its application in photocatalytic degradation. This catalyst utilizes Au1Cu 24 Copper alloy nanoclusters supported on a g-C3N4 support were constructed to address the problems of low efficiency, rapid electron-hole recombination, and poor stability in existing photocatalytic materials. The preparation steps are as follows: first, a g-C3N4 support is prepared, and then Au1Cu is synthesized. 24 Clusters, then Au1Cu 24 A composite catalyst was obtained by dispersing the catalyst in dichloromethane and mixing it with g-C3N4, followed by solvent evaporation. This design effectively suppressed photogenerated carrier recombination and significantly improved photocatalytic activity and stability by modulating the cluster electronic structure and charge distribution through heterometallic doping, combined with the anchoring of the active component by the g-C3N4 support and its role in promoting interfacial charge separation. When applied to the photocatalytic degradation of methylene blue under xenon lamp irradiation, it exhibited excellent degradation performance and cycle stability, with superoxide radicals (·O2) as the main active species. ‑ ) and holes (h + This invention provides a new technical solution for the efficient treatment of organic dye wastewater.

The application discloses an NH2-COFS@ZnS photocatalytic material and a preparation method and application thereof. A multi-amino aromatic ligand and a multi-aldehyde aromatic ligand are combined into an NH2-COFS material through a Schiff base reaction, and the NH2-COFS material is combined with a zinc salt and a sulfur source through a hydrothermal reaction to obtain an NH2-COFS@Zn photocatalytic material. The NH2-COFS@ZnS photocatalytic material has excellent photocatalytic activity, good structural stability and reusability, can be applied to photocatalytic reduction of CO2, and has the advantages of simple preparation method, low cost and meeting industrial production.

The invention discloses a photocatalytic material for synchronously removing composite new pollutants in plateau lakes and a preparation method and application of the photocatalytic material, and relates to the technical field of environmental functional materials, the photocatalytic material is a rare earth metal doped silicon dioxide composite material, and the molar ratio of rare earth metal to silicon is 3-15%; the composite new pollutants comprise micro-plastics, antibiotics and dyes. Rare earth doping is carried out on silicon dioxide, the light response range of the material is effectively widened, the separation and migration efficiency of photo-induced electron-hole pairs is remarkably improved, and therefore synchronous and efficient removal of three kinds of new composite pollutants including micro-plastics, antibiotics and dyes in a water body is achieved at the normal temperature and the normal pressure; the prepared 10% La-SiO2 and other rare earth doped silicon dioxide materials show more excellent photocatalytic activity in a plateau strong ultraviolet environment, and have the comprehensive advantages of low raw material cost, environmental friendliness, no need of complex recovery after use and the like.