27 results about "Artificial photosynthesis" patented technology

The invention belongs to the technical field of biology, particularly relates to the technical field of plant genetic engineering, and more particularly relates to application of an MYC gene in regulation and control of chloroplast development and composite stress resistance. Specifically, the invention innovatively discovers that the combined action of warm and JA can significantly induce seedling cotyledon chloroplast dysplasia, and deletion / reduction of MYC gene expression can significantly inhibit chloroplast dysplasia of plants under the combined action of warm and JA. The discovery provides guidance for remarkably improving plant seedling chloroplast development in a complex dynamic environment and improving the seedling survival rate and photosynthetic productivity, can promote optimization of a chloroplast artificial regulation and control technology, and realizes directional design of efficient photosynthetic organs in facility agriculture and an artificial photosynthetic system.

The invention belongs to the technical field of catalysts, and particularly relates to a metal-covalent organic framework photocatalyst for photocatalytic CO2 reduction as well as a preparation method and application of the metal-covalent organic framework photocatalyst. According to the invention, a novel covalent organic framework material with symmetrical metal ion coordination is firstly synthesized, and the covalent organic framework material is found to have obviously higher performance for photocatalytic CO2 reduction compared with a single COF (Covalent Organic Framework). The invention further designs and synthesizes a covalent organic framework material with asymmetric metal ion coordination, and finds that the photocatalytic CO2 reduction performance of the covalent organic framework material is far better than that of a covalent organic framework material with symmetric coordination, so that an original solution can be provided for designing a new generation of high-performance and low-cost artificial photosynthesis catalyst.

The invention relates to the field of novel energy conversion, and provides a construction method of an electrochemical device simulating artificial photosynthesis. Comprising the following steps: treating foamed nickel through a FeCl3 solution under the conditions of different concentrations and soaking durations, preparing an iron / nickel-based anode catalyst to separate out oxygen, and selecting foamed copper as a cathode catalyst to reduce carbon dioxide; the solar cell panel is used for converting light energy into electric energy to drive electro-catalytic reaction. According to the construction method of the electrochemical device simulating artificial photosynthesis, the solar panel is used for supplying power, and CO2 reduction reaction is catalyzed while water is electrolyzed. The equipment simulates artificial photosynthesis to realize conversion of water and CO2 into clean energy and low-carbon chemicals. By adopting a mode of combining solar power supply with electro-catalysis, the problems of low efficiency and poor stability of traditional photocatalysis are solved, and the cost of an existing electrochemical catalysis oxygen evolution reaction catalyst is reduced.

A novel method for artificial photosynthesis utilizing a chemical system that operates by harnessing visible light and directly capturing carbon dioxide and water from the atmosphere. The system is based on self-organizing complexes comprising visible-light-sensitive chromophores, such as 2-phenyl indole and 2-phenyl benzoxazole, along with titanium tetrachloride, which autonomously perform continuous, complex chemical operations to produce long-chain (C2 to C17) oxygenated organic materials. The process employs earth-abundant metal coordination compounds, including titanium (Ti), zirconium (Zr), hafnium (Hf), and vanadium (V), in the solid state. These compounds form carbonated metal derivatives upon hydrolysis, which are subsequently reduced through proton transfer from water. The system initially generates C1 materials that oligomerize via a novel self-catalyzed mechanism intrinsic to the system's operation. Monitoring and characterization of the chemical transformations have been conducted using high-resolution MALDI-TOF (matrix-assisted laser desorption ionization-time of flight) mass spectrometry, supported by infrared (IR) spectroscopy and nuclear magnetic resonance (NMR) analysis. This innovation represents a sustainable and scalable approach for converting atmospheric CO2 into valuable organic materials.

The invention discloses a bimetallic-Salen photocatalyst based on an isomerism effect as well as a preparation method and application of the bimetallic-Salen photocatalyst. The catalyst is synthesized through a solvothermal method, a diamine compound (such as 3, 3 '-diaminobenzidine or 1, 2-diaminobenzene) and a polyaldehyde compound (such as 2, 6-diformyl phenol or 3, 3', 5, 5 '-tetraformyl-4, 4'-biphenol) are used as organic ligands, a plurality of metal acetates (including Sc, In, Zn, Cu and the like) are used as metal sources, and the catalyst is synthesized through a solvothermal method. And the bimetallic-Salen isomer with a one-dimensional chain structure is prepared under a mild condition. The obtained material can form two isomers with zigzag (Z type) and linear (L type) structures according to different coordination orientations. The concept of'coordination oriented isomerization 'provided by the invention realizes accurate regulation and control of photoelectric properties on the molecular level, and provides a new theory and technical route for designing a multi-metal synergistic efficient artificial photosynthesis system. The catalyst material provided by the invention has wide application prospects in the fields of photocatalytic oxygen production, green oxidation reaction, sustainable energy conversion and the like.

This invention relates to the preparation of a metal-organic framework (MOF) material with confined trimetallic active centers and its catalytic performance in the artificial photosynthesis of urea. A trimetallic synergistic catalytic MOF is provided to address the problem of MOFs' difficulty in photocatalytic urea production. Methods: 1. Preparation of NH2-MIL-125(Ti / Ce); 2. Preparation of Cu-NH2-MIL-125(Ti / Ce). This invention first dopes cerium into NH2-MIL-125(Ti), and then coordinates the amino group of NH2-MIL-125(Ti / Ce) with copper, thereby increasing the electron transfer rate during the photocatalytic process and achieving a high photocatalytic urea yield for Cu-NH2-MIL-125(Ti / Ce). In this invention, the photocatalytic urea yield of Cu-NH2-MIL-125(Ti / Ce) is 400 μg gcat. ‑1 .

The application discloses a kind of double light metal doped modified carbon nitride photocatalyst and preparation method thereof, comprising the following steps: (1) the pretreatment of precursor, according to certain mass ratio, two metal salts are mixed with carbon and nitrogen-containing organic matter and are uniformly ground;(2) preparation is carried out using high-temperature thermal polycondensation method, and constant temperature calcination is carried out under certain conditions;(3) the sample prepared by calcining is washed, centrifuged and dried to obtain double metal co-doped polymer carbon nitride.The method is simple, low in cost, uniform in morphology and high in catalytic activity.The application uses cheap main group light metal to dope and modify carbon nitride (Na-Mg / CN), and the solar conversion quantum yield of the composite material is high, the selectivity of photocatalytic preparation of hydrogen peroxide (H2O2) is good, the efficiency is high, and it can be applied to the field of artificial photosynthesis to prepare important chemicals.

There is provided an artificial photosynthesis energy device, the device comprising: an artificial photosynthesis fuel generator, incorporating: an inlet for receiving at least one of a feed material and at least one byproduct, a reactor which uses light energy from a light source to convert the at least one of the feed material and the at least one byproduct to a fuel, and an outlet which feeds the fuel to a power generator which generates electricity and produces the at least one byproduct from the fuel; the power generator, incorporating: an inlet fluidly connected to the outlet of the artificial photosynthesis fuel generator, and an outlet, wherein the device further comprises: a recycler which directs at least a portion of the at least one byproduct from the outlet of the power generator to the inlet of the artificial photosynthesis fuel generator.

The application belongs to the field of carbon dioxide photocatalytic materials, and relates to a spin catalytic material for promoting CO2 photocatalysis and a preparation method thereof. The material is a high-activity metal grid supramolecule obtained by a volatilization method from a ligand 2,2'-pyrazine dihydrazine methanesulfamide (pbd) and a metal salt. As a photocatalyst, the material can adjust multiple spin states on a single Fe site in the metal grid supramolecule to effectively promote a visible light driven CO2 reduction reaction (CO2RR). After 1h of irradiation, the CO2 to CO yield can reach 6.26mmol g ‑1 , which shows an effective strategy of designing spin-based photocatalysts through supramolecular assembly to promote artificial photosynthesis.

The application discloses a perovskite ultrathin graphite phase carbon nitride heterojunction photocatalyst and a preparation method and application thereof, and the preparation method comprises the following steps: under inert gas, ball milling boron-doped nitrogen-defect graphite phase carbon nitride, dimethylamine hydrobromide and a tin source with a substance amount ratio of (1-9):(1-9):(1-12) to obtain the perovskite ultrathin graphite phase carbon nitride heterojunction photocatalyst. The photocatalyst has excellent photocatalytic water decomposition performance, good dispersibility and stable storage, the whole preparation process can be realized at room temperature, the operation is simple, controllability is strong, repeatability is good, raw materials are cheap and widely sourced, no organic solvent is involved in the reaction process, environmental pollution can be avoided to a certain extent, the photocatalyst is green, safe, environment-friendly, beneficial to large-scale preparation and practical application, and can be widely used in the fields of photocatalytic water decomposition, artificial photosynthesis, organic pollutant degradation and gas oxidation / reduction.

There is provided an artificial photosynthesis energy device, the device comprising: an artificial photosynthesis fuel generator, incorporating: an inlet for receiving at least one of a feed material and at least one byproduct, a reactor which uses light energy from a light source to convert the at least one of the feed material and the at least one byproduct to a fuel, and an outlet which feeds the fuel to a power generator which generates electricity and produces the at least one byproduct from the fuel; the power generator, incorporating: an inlet fluidly connected to the outlet of the artificial photosynthesis fuel generator, and an outlet, wherein the device further comprises: a recycler which directs at least a portion of the at least one byproduct from the outlet of the power generator to the inlet of the artificial photosynthesis fuel generator.

The application belongs to the field of design and synthesis of nano-confined reactors and application of CO2 hydrogenation, and relates to a preparation method of a hollow carbon sphere epitaxial growth Bi4O5Br2 nanosheet confined reactor and application of the reactor in photocatalytic CO2 hydrogenation. A hollow nitrogen-doped carbon sphere NC is used as a template, and Bi4O5Br2 nanosheets are in-situ grown on the surface of the template by an oil bath method to construct a supported hollow carbon sphere confined reactor BOB@NC. The photo-generated electrons generated by the Bi4O5Br2 nanosheets are transferred to the inside of the hollow carbon sphere (NC) by the action of the built-in electric field and the Bi-C bond. The N sites in the NC can simultaneously act as an electron enrichment center and a CO2 spontaneous adsorption-activation center, effectively reducing the CO2 activation energy barrier and promoting the hydrogenation reduction reaction. Under simulated sunlight irradiation, the CO and CH4 yields generated by the reduction of CO2 by the BOB@NC are 3.31 and 14.91 times those of the monomer BOB, respectively. The work provides a new idea for constructing high-performance artificial photosynthesis catalysts.

This invention discloses a method for capturing and in-situ converting CO2 using artificial photosynthesis, belonging to the field of CO2 capture and in-situ catalytic conversion technology. The method includes the following steps: using CO2 and alkylamine as raw materials, and under the combined action of a catalyst and solvent, CO2 capture and in-situ conversion are completed through a simulated artificial photosynthesis process. This invention, by simulating artificial photosynthesis, utilizes alkylamine to capture CO2 and prepare N,N'-di(2-hydroxyalkyl)-urea through in-situ catalytic conversion. It eliminates the need for toxic raw materials, making the process green and environmentally friendly. Furthermore, the raw materials are readily available, low in cost, and easy to promote and apply industrially.

The invention discloses a method and a system for regulating and controlling interfacial properties of micro-droplets based on femtosecond laser. A micro-nano three-dimensional structure is accurately constructed on the surface of a material through the ultra-short pulse characteristic of femtosecond laser, and an electronic push-pull system can be formed on a micro-droplet interface when the inside and outside of a water-oil interface are filled with charge donors and acceptors, so that the charge transmission efficiency can be remarkably improved, the charge return rate can be inhibited, and the problem of pain points for improving the photoelectric conversion efficiency of the material is solved. Compared with the traditional photoetching technology, the processing precision is high, the heat affected zone is small, and various organic / inorganic hybrid materials and the like can be processed; by innovatively combining space selective processing of femtosecond laser with a molecular self-assembly technology, regulation and control of the charge transfer performance of a material interface are realized, the separation state charge return rate is effectively inhibited, and the charge transfer efficiency is greatly improved. The method can be widely applied to flexible photoelectric devices, micro-fluidic sensing chips and artificial photosynthetic systems, and an effective solution is provided for a new generation of efficient energy conversion devices.

A system (100) for modeling and optimizing artificial photosynthesis for the development of materials and devices for converting solar energy into fuel energy, comprising: • a quantum multiscale modeling module (110) configured to simulate the electronic and catalytic properties of photoactive materials; • a photoelectrode design module (120) configured to design and optimize photoanodes and photocathodes for photoelectrochemical reactions; • a module (130) for the fabrication of nanostructured material architectures designed for improved light absorption and catalytic performance; • a hybrid organic-inorganic interface module (140) configured to optimize charge transfer between organic molecules and inorganic semiconductor materials; • an AI optimization engine (150) configured to analyze simulation data and identify optimal material configurations; and • a simulation module (160) for converting solar energy into fuels, configured to simulate the operation of artificial photosynthesis systems for hydrogen production or carbon dioxide reduction.

This invention discloses a plant mutant that simultaneously enhances a plant's adaptability to high temperatures and high light, and its applications. It belongs to the field of plant genetic engineering technology. The plant mutant is a single-base mutation of ICMT5, specifically AT5G59500. The amino acid sequence of the ICMT5 protein is shown in SEQ ID NO.1. This invention obtains... icmt5 The mutant identified the chloroplast location of the ICMT5 protein and revealed its role in enhancing plant photosynthetic capacity and adaptability to high temperature and high light. This invention not only provides a new perspective for analyzing the chloroplast response to environmental stress and offers a new theoretical reference for future artificial photosynthesis simulation, but also has important application value for the breeding and improvement of stress-resistant crop varieties.

This invention provides an artificial photosynthesis reaction device and system for enhancing catalytic performance. The reaction device includes a pretreatment unit, a mixing and transport unit, a photocatalytic regeneration unit, and a separation unit. The pretreatment unit activates received carbon dioxide under supercritical conditions. The mixing and transport unit mixes various gaseous raw materials in a predetermined ratio and transports them to the photocatalytic regeneration unit. The photocatalytic regeneration unit preheats and activates the photocatalyst, enabling the chemical reaction to occur. The separation unit separates the reacted mixture and returns the unreacted mixture to the photocatalytic regeneration unit. According to this invention, industrial processing can reduce the chemical inertness of carbon dioxide, lower reaction energy consumption, and simultaneously improve catalytic reaction efficiency and overall chemical conversion rate.

The photocatalyst comprises a support substrate having a flat surface, a metal oxide layer made of a metal oxide material and attached to the flat surface, and a carbon nitride layer made of polymeric carbon nitride that reacts to visible light and is fixed to the flat surface via the metal oxide layer. The carbon nitride layer is firmly fixed to the support substrate, and artificial photosynthesis can be performed by immersing it in a liquid.

The utility model provides an artificial photosynthesis multi-reactor integrated system. The system comprises a pretreatment unit, a mixing unit, a catalyst regeneration reactor unit and a separation and purification unit, the pretreatment unit is used for pretreating reaction raw materials to obtain mixed gas; the mixing unit is used for further uniformly mixing the mixed gas into raw material gas with uniform proportion; the catalyst regeneration reactor unit is used for receiving the raw material gas and reacting to obtain a mixture; and the separation and purification unit is used for separating the mixture, sending the unreacted raw material gas back to the catalyst regeneration reactor unit and purifying the target product. According to the technical scheme provided by the utility model, raw material supply change and market demand fluctuation can be adapted, various raw materials are used for preparing methanol, and accurate regulation and control on the raw material gas proportion are realized by matching with an optimized process flow and an equipment structure; the flexibility and resource utilization rate of the production process are enhanced while the reaction efficiency and the product purity are improved.

This invention provides an ionization-coupled artificial photosynthesis reaction apparatus and system. The reaction apparatus includes: a feed control unit, an ionization treatment unit, a catalytic regeneration reactor unit, an ionization feedback unit, and a product separation unit. The feed control unit delivers a predetermined proportion of reactants to the ionization treatment unit; the ionization treatment unit ionizes the reactants; the ionization feedback unit separates the ionized reactants and sends the ionized reactants into the catalytic regeneration reactor unit; the catalytic regeneration reactor unit is used for the chemical reaction of the ionized reactants to obtain a mixture of the target product and the ionized reactants, which is then sent to the product separation unit; the product separation unit separates the mixture to obtain the target product. The technical solution of this invention reduces reaction condition requirements and improves the utilization efficiency of reactants and catalysts.

The utility model provides a cyclic regeneration artificial photosynthesis reaction device and a reaction system, the device comprises a light source, a first regenerator, a reactor, a material return pipe and a lifting pipe, the light source is used for providing photocatalytic light driving force; the first regenerator is of a cavity structure, and a discharge port is formed in the lower part of the first regenerator and is used for collecting an inactivated catalyst discharge device; the lifting pipe is arranged at the upper part of the first regenerator and is used for communicating the first regenerator with the reactor; the reactor is of a cavity structure, a material sinking pipe is arranged at the lower part of the reactor, and the reactor is connected to the material return pipe through the material sinking pipe; and the return pipe is used for communicating the reactor with the lower part of the first regenerator and transmitting the deactivated catalyst collected by the reactor to the first regenerator. According to the technical scheme provided by the utility model, the catalyst loss can be reduced while the reaction conversion rate is improved.

The application relates to a preparation method of a cadmium sulfide@metal organic framework heterojunction composite material, and belongs to the fields of photochemical energy conversion and photocatalytic degradation. The application aims to solve the technical problems of high-quality preparation of an artificial photosynthesis photocatalytic composite material and how to effectively improve the photochemical energy conversion efficiency. The method comprises the following steps: firstly, zirconium tetrachloride, 2-amino-4,4'-biphenyldicarboxylic acid and acetic acid are dissolved in N,N-dimethylformamide, and then the mixture is transferred into a reaction kettle for heating; after the reaction is completed, the mixture is cooled to room temperature, and then taken out, washed and dried to obtain a UiO-67-NH2 solid powder; secondly, the UiO-67-NH2 powder, cadmium nitrate tetrahydrate and thioacetamide are added into deionized water, and then the mixture is continuously stirred after being heated; after the reaction is completed, the mixture is cooled to room temperature, and then washed and dried for multiple times to obtain a cadmium sulfide@metal organic framework (CdS@UiO-67-NH2) heterojunction composite material.

The invention relates to a preparation method of a Ga-coated Cu3-DHzOMe-COF material and a method for synthesizing urea through photocatalysis of CO2 and N2 reaction by using the Ga-coated Cu3-DHzOMe-COF material. The invention provides a novel Ga (at) Cu3-DHzOMe-COF material, and aims to solve the problem that the yield is low when an existing covalent organic framework is used for photocatalytic urea synthesis. The method comprises the following steps: 1, preparing a Cu3-DHzOMe-COF material; and 2, preparation of the Ga (at) Cu3-DHzOMe-COF material. The preparation process is simple and effective, the reagent consumption is low, the yield is high, and the metal-loaded photocatalyst provided by the invention can effectively improve the urea photosynthesis efficiency. Experiments prove that the Ga-coated Cu3-DHzOMe-COF material has excellent performance of photocatalytic synthesis of urea, and the urea yield can reach 51 [mu] g.g <-1 >. H <-1 > under the irradiation of visible light.

The invention discloses a bionic photocatalytic liposome system for carbon dioxide reduction and hydrogen evolution, and belongs to the technical field of artificial photosynthesis and catalytic materials. The system comprises a long-chain alkyl modified ruthenium complex photosensitizer, a long-chain alkyl modified tetrabipyridine cobalt catalyst and liposome vesicles formed by self-assembly of phospholipid. The photosensitizer and the catalyst are embedded into the vesicle membrane through a hydrophobic chain, and spatial ordered arrangement is realized in a water phase. Under the irradiation of visible light, the system takes sodium ascorbate as an electron donor and can efficiently catalyze carbon dioxide to be reduced into carbon monoxide; under the argon atmosphere, proton reduction hydrogen evolution can be efficiently catalyzed. The system simulates the space separation and electron directional transfer functions of a membrane system in natural photosynthesis, effectively improves the charge separation efficiency, and provides a new way for constructing an integrated artificial photosynthesis platform.

The present disclosure relates to an apparatus (100) to convert atmospheric carbon dioxide (CO2) into glucose (C6H12O6) using artificial photosynthesis. The apparatus (100) includes a carbon capture unit (102) that captures carbon dioxide from atmosphere, utilizing an amine- based absorber. The captured carbon dioxide is processed by an absorber and separator unit 5 (104-1, 104-2), which desorbs and concentrates the carbon dioxide, releasing pure carbon dioxide. The apparatus (100) also includes an electrobath (106) that receives water and processes the water through electrolysis to provide pure water. A reactor (108) combines pure carbon dioxide and pure water under controlled conditions, simulating artificial photosynthesis to synthesize the glucose. This apparatus (100) provides a sustainable approach for producing 0 glucose while reducing atmospheric carbon dioxide levels, contributing to carbon capture and renewable energy solutions.

There is provided an artificial photosynthesis energy device, the device comprising: an artificial photosynthesis fuel generator, incorporating: an inlet for receiving at least one of a feed material and at least one byproduct, a reactor which uses light energy from a light source to convert the at least one of the feed material and the at least one byproduct to a fuel, and an outlet which feeds the fuel to a power generator which generates electricity and produces the at least one byproduct from the fuel; the power generator, incorporating: an inlet fluidly connected to the outlet of the artificial photosynthesis fuel generator, and an outlet, wherein the device further comprises: a recycler which directs at least a portion of the at least one byproduct from the outlet of the power generator to the inlet of the artificial photosynthesis fuel generator.

The present invention provides an oxygen-evolving catalyst that can achieve high catalytic activity, or furthermore, high durability, under alkaline conditions, and a method for producing the same. [Solution] The oxygen evolution catalyst is a boride containing at least boron and having an icosahedral boron cluster made up of 12 boron atoms. x Al y B 14+z (A = alkali metal or alkaline earth metal, 0 ≤ x ≤ 1.0, 0.7 ≤ y ≤ 1.0, -1.0 ≤ z ≤ 1.0) or A x B 29+y (0≦x<2.0, -1.0≦y≦1.0). This oxygen-evolving catalyst contains at least alkali metal or alkaline earth metal cations and boron, and is obtained by removing at least some of the cations from a boride having an icosahedral boron cluster consisting of 12 boron atoms. Alkali metals include Na, Li, K, etc., and alkaline earth metals include Mg, Be, Ca, etc.