1054 results about "Electron transfer" patented technology

NADP-dependent oxidoreductase compositions, and electrodes, sensors and systems that include the same. Analyte sensors include an electrode having a sensing layer disposed thereon, the sensing layer comprising a polymer and an enzyme composition distributed therein. The enzyme composition includes nicotinamide adenine dinucleotide phosphate (NAD(P)+) or derivative thereof, an NAD(P)+-dependent dehydrogenase; an NAD(P)H oxidoreductase; and an electron transfer agent comprising a transition metal complex.

NADP-dependent oxidoreductase compositions, and electrodes, sensors and systems that include the same. Analyte sensors include an electrode having a sensing layer disposed thereon, the sensing layer comprising a polymer and an enzyme composition distributed therein. The enzyme composition includes nicotinamide adenine dinucleotide phosphate (NAD(P)+) or derivative thereof, an NAD(P)+-dependent dehydrogenase; an NAD(P)H oxidoreductase; and an electron transfer agent comprising a transition metal complex.

NADP-dependent oxidoreductase compositions, and electrodes, sensors and systems that include the same. Analyte sensors include an electrode having a sensing layer disposed thereon, the sensing layer comprising a polymer and an enzyme composition distributed therein. The enzyme composition includes nicotinamide adenine dinucleotide phosphate (NAD(P)+) or derivative thereof; an NAD(P)+-dependent dehydrogenase; an NAD(P)H oxidoreductase; and an electron transfer agent comprising a transition metal complex.

NADP-dependent oxidoreductase compositions, and electrodes, sensors and systems that include the same. Analyte sensors include an electrode having a sensing layer disposed thereon, the sensing layer comprising a polymer and an enzyme composition distributed therein. The enzyme composition includes nicotinamide adenine dinucleotide phosphate (NAD(P)+) or derivative thereof; an NAD(P)+-dependent dehydrogenase; an NAD(P)H oxidoreductase; and an electron transfer agent comprising a transition metal complex.

NADP-dependent oxidoreductase compositions, and electrodes, sensors and systems that include the same. Analyte sensors include an electrode having a sensing layer disposed thereon, the sensing layer comprising a polymer and an enzyme composition distributed therein. The enzyme composition includes nicotinamide adenine dinucleotide phosphate (NAD(P)+) or derivative thereof, an NAD(P)+-dependent dehydrogenase; an NAD(P)H oxidoreductase; and an electron transfer agent comprising a transition metal complex.

NADP-dependent oxidoreductase compositions, and electrodes, sensors and systems that include the same. Analyte sensors include an electrode having a sensing layer disposed thereon, the sensing layer comprising a polymer and an enzyme composition distributed therein. The enzyme composition includes nicotinamide adenine dinucleotide phosphate (NAD(P)+) or derivative thereof; an NAD(P)+-dependent dehydrogenase; an NAD(P)H oxidoreductase; and an electron transfer agent comprising a transition metal complex.

The invention provides a catalyst, a preparation method and application thereof, and a method for preparing primary amine by catalyzing nitrile compound hydrogenation, and particularly relates to the technical field of catalyst synthesis. The catalyst comprises a nickel / cobalt-based catalyst and a metal salt; wherein the nickel / cobalt-based catalyst is selected from any one of a supported nickel / cobalt-based catalyst, a Raney nickel / cobalt catalyst or a nickel / cobalt nanocrystal; the metal salt comprises any one or a combination of at least two of tungsten salt, molybdenum salt, vanadium salt, aluminum salt and cerium salt. The metal salt and the nickel / cobalt main catalyst have a synergistic effect: the surface electron density is adjusted through electron transfer, the hydrogen dissociation and cyano adsorption activation capacities are enhanced, the hydrogenation activity is improved, and the mild condition reaction is assisted; the surface chemical environment is changed or steric hindrance is borrowed, the primary amine selectivity is improved, and byproducts are inhibited; aluminum salt, cerium salt and the like inhibit nickel / cobalt agglomeration, increase active sites, enhance stability, prolong the service life and reduce the dosage.

The invention provides a carbon emission management monitoring method and device for rice planting in a cold region, and relates to the technical field of carbon emission management monitoring. Vertical three-layer parameters of a soil profile, namely the surface methane concentration, the middle oxidation-reduction potential and the deep organic acid concentration, are collected; the method comprises the following steps: mapping a middle-layer potential into an inhibition coefficient according to a microbial electrochemical principle, further calculating potential uplink electron flux and actual downlink electron sedimentation intensity, identifying an electron transport chain breakage risk through a residual error of the potential uplink electron flux and the actual downlink electron sedimentation intensity, and carrying out nonlinear fusion on the electron transport residual error and environment weights of all layers by adopting a p-norm model. Through the risk amplification coefficient, the superlinear conduction of the local risk to the whole system is realized, the dominant risk layer is accurately positioned based on the comprehensive weight, the differential field management strategy is automatically generated, and finally the closed-loop intelligent management normal form is constructed, and the accurate control of the carbon emission based on the mechanism model is realized.

The invention provides an efficient chloramphenicol degradation method based on Co-Cu-carbon composite nano-catalyst activated peroxymonosulfate, which comprises the following steps: regulating the Co / Cu molar ratio in a bimetal organic framework precursor, and performing pyrolysis to prepare the Co-Cu-carbon composite catalyst with an optimized pore structure, graphitization degree and metal dispersity; peroxymonosulfate is activated by utilizing the synergistic effect of Co / Co and Cu / Cu redox pairs to generate sulfate free radicals, hydroxyl free radicals, singlet oxygen and superoxide free radicals, and direct oxidative degradation of chloramphenicol is promoted by taking a catalyst as an electron transfer bridge; the method realizes rapid and efficient removal of chloramphenicol, high mineralization rate, excellent cycle stability and strong anti-interference capability, and solves the technical problems of low removal efficiency, high cost and easy secondary pollution in the prior art.

The invention discloses a method for synergistically enhancing biological oxidation of arsenopyrite by utilizing symbiotic minerals, which particularly comprises the following steps: adding a certain amount of pyrite into an arsenopyrite biological oxidation system, and improving the quantity and activity of acidophilic thiobacillus ferrooxidans by utilizing chemical change of a solution generated by oxidation of the pyrite. The mineral leaching capability of the functional microorganisms is optimized; meanwhile, under the dual action of pyrite and microorganisms, the content of Fe < 3 + > in the solution is remarkably increased, and the Fe < 3 + > serves as a main oxidizing agent for oxidizing arsenopyrite; due to the difference between the surface potentials of the pyrite and the arsenopyrite, a galvanic couple effect is formed between minerals, the electron transfer efficiency between the arsenopyrite and the oxidizing agent is accelerated, and finally the purpose of improving the leaching rate of the arsenopyrite in a biological system is achieved; according to the method, the leaching rate of arsenic in an arsenopyrite biological oxidation system is increased by nearly 8 times at most, the reinforcing effect on arsenopyrite oxidation is remarkable, and meanwhile the method is simple in process, mild in condition, easy and convenient to operate and low in cost.

The invention discloses a metal in-situ anchoring carbon nanocluster catalyst as well as a preparation method and application thereof, and belongs to the technical field of unconventional oil and gas resource development. The metal in-situ anchored carbon nano-cluster catalyst provided by the invention is amorphous nano-particles without pore channel confinement, all active sites are exposed on the surface, and macromolecular organic matters in an in-situ pyrolysis process can be directly adsorbed and activated; the metal center is anchored to a flexible carbon skeleton in an atomic scale through M-N-C and M-O-C coordination bonds, and high dispersity and structural stability are still kept at the formation temperature of 500 DEG C; meanwhile, the catalyst is easily and uniformly injected into an oil shale reservoir through fracturing fluid and is well dispersed in a complex pore network, and the solid-solid catalytic interface efficiency is remarkably improved; the catalyst does not have a strong acid center, promotes selective fracture of C-C / C-H bonds mainly through metal electron transfer, and reduces the risk of formation blockage; therefore, the method has a good application prospect in oil shale in-situ pyrolysis.

The invention belongs to the technical field of gene engineering, and particularly relates to fusion vitamin D hydroxylase and application thereof in preparation of 25-hydroxy vitamin D2 and 25-hydroxy vitamin D3. The fusion vitamin D hydroxylase comprises a Vdh-K1 heme structural domain of which the amino acid sequence is shown as SEQ ID NO.1, a CYP116B65 redox structural domain of which the amino acid sequence is shown as SEQ ID NO.3, and a linker for connecting the Vdh-K1 heme structural domain and the CYP116B65 redox structural domain. The fusion vitamin D hydroxylase is a self-sufficiency enzyme, and can realize stable catalytic conversion of vitamin D2 and vitamin D3 on the premise of not depending on an Fdx and Fdr assisted electron transfer system.

The invention belongs to the technical field of plant genetic engineering, discloses a method for increasing the yield of rice, and aims to solve the technical problem that the yield is reduced due to reduction of photosynthetic efficiency caused by light inhibition of rice under high-light-intensity illumination. According to the method, the expression quantity of the OsJAB1 gene in a target plant is increased, the content of vitamin C in the plant is increased, the photosynthetic electron transfer efficiency is improved, dry matter accumulation and grain development are promoted, and finally the rice yield is increased.

The invention discloses a composite catalyst in a Fe3O4 nanoparticle confined carbon nanotube and application of the composite catalyst in degradation of bisphenol pollutants in water, and belongs to the technical field of environmental protection and water treatment. According to the catalyst, Fe3O4 nano-particles with the particle size of 1-5 nm are confined in inner channels of multi-walled carbon nanotubes (CNTs), stable Fe-C bonds are formed between Fe atoms and carbon atoms on the inner walls of the CNTs, a nano confinement structure is constructed, and the stability and electron transfer efficiency of the catalyst are improved. When the catalyst is used for activating peracetic acid (PAA), bisphenol pollutants in water can be quickly and efficiently removed. The catalyst can keep high-efficiency degradation performance in a wide range of pH value of 4-12, the degradation efficiency is still kept at 95% or above after the catalyst is recycled for 10 times, and the catalyst shows remarkable stability and practicability. The invention provides a novel catalyst which is excellent in performance, economical and environment-friendly and a process method for the field of actual water treatment.

The invention belongs to the technical field of oil and gas exploitation, and relates to a nanometer desorbing agent for a gas well and a preparation method thereof.The desorbing agent is prepared by using biochar subjected to special pretreatment as a core carrier, loading bimetallic oxide nanoparticles in a specific proportion and carrying out surface modification with an environment-friendly surface active agent. Through the synergistic effect of the nanometer size effect, the catalysis / electron transfer effect of the metal oxide, the physical adsorption and pore transport effect of the biochar and the interfacial tension reduction effect of the surfactant, the adsorption energy barrier of gas molecules such as methane on the rock surface is remarkably reduced, and efficient desorption of the gas molecules is promoted. Meanwhile, all the components and the preparation process are environment-friendly and harmless to a human body.

The invention provides a sulphide ore alkaline desulfurization and cyanidation gold leaching agent system and a method for extracting gold through the sulphide ore alkaline desulfurization and cyanidation gold leaching agent system, and belongs to the technical field of hydrometallurgy. According to the method, a ternary agent system consisting of potassium ferricyanide, low-concentration sodium cyanide and thioguanosine is constructed. An efficient'oxidation-inhibition 'synergistic system is formed between the auxiliary desulfurization agent potassium ferricyanide and the thioguanosine. The rapid and selective oxidation of potassium ferricyanide is smoothly carried out under the synergistic effect of thioguanosine, minerals are thoroughly decomposed, and the surface keeps high activity; meanwhile, due to the existence of the thioguanosine, the local microcell passivation risk and catalytic electron transfer can be eliminated more directionally. The sodium cyanide and the sodium cyanide complement each other, it is jointly guaranteed that the exposed gold can be smoothly and efficiently leached through follow-up low-concentration sodium cyanide, finally, the total consumption of reagents is reduced, environmental pollution is reduced, and meanwhile high-recovery-rate extraction of the gold in the sulfide ore difficult to treat is achieved.

The invention discloses a composite catalyst for a peracetic acid activation system and a preparation method and application thereof, and relates to the technical field of advanced oxidation water treatment. The preparation method of the catalyst comprises the following steps: preparing an aqueous solution of a cobalt source as a precursor solution; adding a manganese source into the precursor solution to obtain a Co-Mn mixed salt solution; adding a complexing agent into the Co-Mn mixed salt solution to form a stable sol system; heating the sol system at constant temperature to obtain wet gel; drying the wet gel to obtain a porous dry gel precursor; calcining the porous xerogel precursor, and then cooling and grinding to obtain the composite catalyst for the peracetic acid activation system. The composite structure in the catalyst greatly improves the rate of generating hydroxyl radicals and organic oxygen radicals by decomposing peracetic acid by promoting electron transfer circulation of a metal active center, shows good structural stability and recyclability, and is especially suitable for degradation of an organic pollutant sulfamethoxazole in a water body.

The invention relates to the technical field of all-vanadium redox flow batteries, and discloses a supported electrolyte of all-vanadium redox flow battery positive and negative electrolyte and a preparation method thereof, and the supported electrolyte comprises an aqueous solution containing vanadium ions, sulfonate ions, sulfate ions and phosphonic acid groups. The sulfonic acid group (-SO3H) has strong polarity and high ionization degree, after the sulfonic acid group (-SO3H) is mixed with the phosphonic acid group (-PO3H2) and sulfuric acid, the ionic environment of the electrolyte can be optimized, the activation energy of V (II) / V (III) and V (IV) / V (V) electricity on electron transfer is reduced, and compared with an existing sulfuric acid supported electrolyte, the reversibility of electrochemical reaction is remarkably improved, and the electrochemical activity of the electrolyte is enhanced; meanwhile, phosphonic acid groups have high complexing ability, can form stable chelates with vanadium ions and can form complexing-dispersing synergy with sulfonic acid groups, the solubility of the vanadium ions is improved, and agglomeration and crystallization of the vanadium ions are inhibited.

The invention discloses a nitrogen-doped carbon nanotube modified magnetic pyrite composite catalyst as well as a preparation method and application thereof, and belongs to the technical field of water treatment. The nitrogen-doped carbon nanotube modified magnetic pyrite composite catalyst is prepared from the following raw materials: multi-walled carbon nanotubes, a concentrated nitric acid solution, melamine, magnetic pyrite powder and sodium percarbonate. According to the preparation method, magnetic pyrite and nitrogen-doped carbon nanotubes are mixed according to the ratio of 15: 1, nitrogen heat treatment is performed for 3 h at the temperature of 600 DEG C to form a composite carrier, and then activation treatment is performed through sodium percarbonate to obtain the catalyst. According to the catalyst, the electron transfer capacity and adsorption performance are enhanced through the nitrogen-doped carbon nanotubes, Fe < 2 + > / Fe < 3 + > circulation of the magnetic pyrite is cooperated, and the dual effects that sodium percarbonate is efficiently activated to generate free radicals to degrade pollutants and rapid recovery is achieved through magnetism can be achieved. The catalyst prepared by the invention is suitable for deep treatment of organic matters and heavy metals in industrial wastewater, and has the advantages of wide pH adaptation range, no secondary pollution and recyclability.

The invention discloses a preparation method of a modified zinc-bromine flow battery carbon felt negative electrode and the carbon felt negative electrode prepared by the method, and belongs to the field of zinc-bromine flow batteries. A copper organic matter precursor is heated and gasified in a double-temperature-zone tubular furnace, molecules of the partially gasified copper organic matter precursor are loaded to the position where a carbon felt is located by hydrogen and adsorbed on the carbon felt, the copper organic matter precursor reacts with the hydrogen to form a copper elementary substance, and the copper elementary substance is attached to the surface of the carbon felt to form a load. Therefore, the purpose of modifying the carbon felt by loading the copper elementary substance is achieved. According to the method, the obstruction of low conductivity of the loaded oxide on electron transfer in the zinc deposition / stripping process is overcome; inactivation caused by reaction of loaded metal active sites and electrolyte acidic components is avoided; and the problem that the internal fibers of the carbon felt are difficult to uniformly load metal elementary substances or oxide particles due to high surface tension between the metal salt solution and the carbon felt is solved, efficient and uniform loading of the copper elementary substances on the carbon felt is realized, and the negative electrode performance of the zinc-bromine flow battery is remarkably improved.

The invention relates to a 1D / 2D dual-heterojunction catalyst, a preparation method thereof and application of the 1D / 2D dual-heterojunction catalyst in photo-assisted periodate activated degradation of bisphenol A. The preparation method comprises the following steps: mixing a concentrated hydrochloric acid solution with LiF, adding Ti3AlC2, carrying out a heating reaction, carrying out solid-liquid separation to obtain a solid phase, washing the solid phase to be neutral, and dispersing the solid phase in ethanol to obtain an MXene ethanol solution; adding a cerium source aqueous solution into an MXene ethanol solution, mixing, and placing in liquid nitrogen to obtain a mixed solution; mixing an organic ligand, ethanol and pure water to obtain a mixed solution, carrying out a mixed heating reaction on the mixed solution and the mixed solution, carrying out solid-liquid separation to obtain a precipitate, and freeze-drying to obtain powder; and heating and calcining the obtained powder in an inert atmosphere to obtain the 1D / 2D dual-heterojunction catalyst. According to the invention, photogenerated electron-hole recombination is effectively inhibited by constructing double heterojunctions, and ultrafast electron transfer is realized at the same time, so that the oxidation effect is enhanced, and the efficient photocatalytic activity of '1 + 1gt, 2' is realized.

The invention relates to a Bi19Br3S27-NiSX catalyst. In the Bi19Br3S27-NiSX catalyst, an amorphous phase NiSX is loaded on a crystal phase Bi19Br3S27. The preparation method of the catalyst comprises the following steps: taking bismuth salt and nickel salt as raw materials, dissolving the raw materials into ethylene glycol, and then adding a sulfur source and a bromine source to obtain a mixed solution; and carrying out solvothermal reaction on the mixed solution to obtain the Bi19Br3S27-NiSX catalyst. The invention relates to a Bi19Br3S27-NiSX catalyst which is applied to production of ethylene through photo-thermal CO2 reduction. The catalyst has the beneficial effects that the catalyst has excellent sunlight full-spectrum light absorption property and photo-thermal conversion capacity, the surface activity of the catalyst is remarkably improved through introduction of the NiSX amorphous phase, the electron transfer efficiency in catalytic reaction is enhanced, the light energy utilization efficiency is improved through the synergistic effect of the multi-component catalyst, and CO2 is subjected to high-selectivity catalytic reduction to produce ethylene.

A method may comprise (a) inserting an insulin delivery device subcutaneously into a body of a subject, which comprises an amperometric glucose sensor comprising an electrode layer comprising an indicating electrode and underlying a redox-catalytic layer comprising a redox mediator; (b) using said insulin delivery device to deliver an insulin formulation (e.g., comprising a phenol or cresol excipient) subcutaneously to said subject; and (c) using said amperometric glucose sensor to measure a subcutaneous glucose concentration, which comprises using said redox-catalytic layer to allow electron transfer from subcutaneous glucose to said indicating electrode sufficient to cause a response of said amperometric glucose sensor at an applied bias potential of no more than +250 millivolts, wherein (b) and (c) are performed at the same time for at least one hour, while maintaining a sensor sensitivity of at least 50% of an initial sensor sensitivity for up to one hour.

The invention relates to the field of water environment pollution treatment, in particular to a bimetal MOF modified cellulose derived carbon aerogel catalyst as well as a preparation method and application thereof. The method comprises the following steps: 1) dissolving a transition metal salt and an organic ligand in an organic solvent to prepare a bimetallic MOF precursor solution; 2) dissolving a cellulose derivative in water, and treating to prepare cellulose aerogel; (3) immersing cellulose aerogel into the precursor solution, and carrying out in-situ growth to prepare MOF modified cellulose gel; and 4) carrying out carbonization treatment on the modified cellulose gel to prepare the bimetallic MOF modified cellulose-derived carbon aerogel catalyst. The catalyst has extremely high physical and chemical stability, meanwhile, the catalytic performance of the catalyst is effectively improved by means of mechanisms such as bi-metal synergism, graded electron transfer and high-dispersion active sites, and the catalyst can be effectively used for effective and efficient catalytic degradation of organic pollutants in a water body and is beneficial to separation and recovery.

The invention relates to the technical field of biological denitrification, in particular to a nitrogen-doped carbon dot-based microbial electronic control denitrification system and application thereof. The system comprises electron donor microorganisms, electron acceptor microorganisms and nitrogen-doped carbon dots, the nitrogen-doped carbon dots serve as electron mediators outside cells, an efficient extracellular electron transfer network is constructed, and interspecific electron transfer resistance is reduced; meanwhile, the nitrogen-doped carbon dots can regulate and control intracellular electron transport chains and the energy metabolism process, the improvement of the reducing power and the energy level is promoted, and the metabolism mode optimization is realized. By cooperatively regulating and controlling generation, transmission and utilization of electrons under an extreme electron donor limited oligotrophic condition, the system disclosed by the invention can realize efficient denitrification, avoid nitrite accumulation, remarkably inhibit generation of nitrous oxide (N2O), reduce dependence on an external organic carbon source and an electron source, and improve the denitrification efficiency. And a new technical approach is provided for improving the deep denitrification efficiency under the low-carbon condition.

The invention discloses a covalent organic framework material for regulating and controlling a metal coordination distance, a preparation method of the covalent organic framework material and application of the covalent organic framework material in activating PMS to degrade pollutants, on the basis of original metalloporphyrin, metal atoms are connected at the position of an intermediate linking group in a coordination manner, so that the loading capacity of metal is increased, and the stability of the metal is improved; the distance between two adjacent metal atoms is greatly shortened, the electron transfer efficiency is enhanced, and the catalytic activity of the framework material is improved; therefore, the framework material shows excellent catalytic activity. The covalent organic framework material is prepared through a solvothermal reaction, the covalent organic framework material continues to react with a metal precursor to load metal, the preparation method is simple, a complex reaction process and harsh reaction conditions are not needed, and large-scale preparation can be achieved.

The invention relates to the technical field of electrode paste production, and provides an anti-oxidation high-electrical-stability electrode paste and a preparation method thereof, and the electrode paste is prepared from the following raw materials: BN thick-coated coarse SiC, BN thin-coated fine SiC, carbon-coated graphite, ZrO2-carbon composite microspheres, a filler and a binder in a mass ratio of (16-19): (11-14): (29-32): (7-10): (13-16): (15-18). BN thick coating and BN thin coating are respectively carried out on the coarse SiC particles and the fine SiC particles, so that the balance of oxidation resistance and conductivity is realized; the flake graphite is subjected to light oxidation and carbon coating modification, so that electron transfer is promoted while oxygen is isolated, and the problem of conductive phase isolation possibly caused by an antioxidant layer is avoided; zrO2 at carbon composite microspheres are prepared to improve the structural stability and form a complementary anti-oxygen barrier, so that the synergistic improvement of the oxidation resistance and the conductivity of the electrode paste is realized.

The invention belongs to the field of new materials, and discloses an electrode-based liposome adriamycin entrapment rate electrochemical detection method. According to the detection method, after a bipolar vertical ordered mesoporous silica film (bp-VMSF) is modified on an electrically activated glassy carbon electrode (p-GCE), separation, enrichment and electrochemical detection are integrated, and rapid and sensitive detection of adriamycin can be realized. The glassy carbon electrode is subjected to electrochemical activation pretreatment under the alkaline condition, bp-VMSF stably grows, the surface of the inner layer close to the p-GCE electrode is negatively charged, and the surface of the outer layer away from the electrode is positively charged. The asymmetric charge configuration enhances the adsorption capacity of positively charged adriamycin molecules on an electrode interface through electrostatic enrichment. The p-GCE adsorbs adriamycin and promotes electron transfer, and is combined with the synergistic enrichment effect of the bp-VMSF double-static nano-channel, so that the electrochemical response performance to adriamycin is jointly improved, a method is provided for rapid detection of the liposome adriamycin encapsulation efficiency, and the p-GCE has a good prospect in evaluation of liposome adriamycin preparations.

The invention relates to sludge-based nano biochar as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing iron-containing excess sludge into a suspension, adjusting the pH value to 2-8, heating and hydrolyzing at 40-150 DEG C, collecting solids, drying and grinding to obtain sludge fine powder; calcining in an N2 atmosphere to obtain charcoal powder; the charcoal powder is subjected to acid pickling, and acidified charcoal is obtained; mixing and reacting with hydrogen peroxide in proportion, centrifuging to take supernate, and filtering to obtain a nano biochar solution; and purifying and drying the nano-biochar solution to prepare nano-biochar powder. The particle size of the nano biochar is 1t; the molar percentage content of the oxygen element is 15%-50%; the width of lattice fringes is 0.22 nm, and the total content of heavy metals is lower than 0.05%. The sludge-based nano biochar provided by the invention has good conductivity, oxidation-reduction property and low biotoxicity, and can simultaneously accelerate the extracellular electron transfer effect and intracellular electron transfer rate of microorganisms and improve the biological denitrification efficiency.

The invention belongs to the technical field of water ecological restoration, and particularly relates to a photocatalysis-biological membrane synergistic type ecological floating bed system based on solar energy driving and application of the photocatalysis-biological membrane synergistic type ecological floating bed system. The ecological floating bed system comprises a floating bed module, a biofilm carrier module, a photocatalysis module, an aeration module and a power supply module. The carbon fiber substrate, the photocatalyst and the UV-LED lamp irradiation structure are adopted, all-day work is achieved through sunlight in the daytime and UV-LED lamps at night, the photocatalyst loaded on the carbon fiber substrate is activated, oxidation groups are generated, degradation of organic pollutants is promoted, algae are efficiently controlled, and pollutants such as algal toxin are degraded. Oxygen supply of the aeration module is enhanced, and the biological membrane nitration reaction is promoted. The composite filler in the planting basket adopts the layout of ceramsite-volcanic rock-manganese ore, so that the functions of physical adsorption, ion exchange and electron transfer are synchronously realized; after the composite filler adsorbs pollutants, in-situ regeneration can be realized through aeration disturbance and microbial metabolism; all the modules cooperate to improve the pollutant removal efficiency.