26 results about "Cadmium acetate" patented technology

The invention provides a method for promoting acquisition of clean fuel by light / sound concerted catalytic degradation of waste plastics and upgrading and conversion thereof, which comprises the following steps: uniformly mixing g-C3N4, cadmium acetate and thioacetamide according to a predetermined proportion, pouring into a reaction kettle, placing in a high-temperature oven for a predetermined time, centrifuging, cleaning and drying to obtain a catalyst, the method comprises the following steps: loading a catalyst on the surface of aerogel, hydrogel or non-woven fabric to obtain an MTSJA-loaded catalyst, treating waste plastic with NaOH, adding the MTSJA-loaded catalyst, stirring under irradiation of a xenon lamp, starting ultrasound for reaction, and carrying out light / sound synergistic catalytic degradation on the waste plastic. According to the method, energy consumption is not needed, toxic and harmful gas is not generated, the purposes of energy conservation and environmental protection can be achieved, meanwhile, carbon dioxide in water can be catalytically reduced to generate clean energy such as methane in the process of degrading the waste plastic, and further obtaining of the energy is promoted.

The invention discloses a method for synthesizing a Mn0. 43Cd0. 57S / Cu2MoS4 photocatalyst by adopting a solvothermal method, and belongs to the technical field of catalysts. The preparation method comprises the following steps: preparing copper molybdenum sulfide by using cuprous oxide as a template, synthesizing copper molybdenum sulfide with high purity and good crystallinity by combining a solvothermal method, preparing manganese cadmium sulfide by using manganese acetate, cadmium acetate, sodium hydroxide and thioacetamide as raw materials, adding copper molybdenum sulfide before a hydrothermal reaction, successfully modifying the manganese cadmium sulfide by constructing a heterojunction, and preparing the copper molybdenum sulfide modified manganese cadmium sulfide. The Mn0. 43Cd0. 57S / Cu2MoS4 photocatalyst is synthesized, and the photocatalytic hydrogen production rate of the cadmium manganese sulfide is improved. Moreover, the hydrogen production rate of the Mn0. 43Cd0. 57S / Cu2MoS4 photocatalyst prepared by the invention can reach 8233 mu mol / (g.h), which is 2.08 times of the hydrogen production rate of pure cadmium manganese sulfide, and 1.24 times of the hydrogen production rate of cadmium manganese sulfide loaded with 1% platinum.

The application discloses a synthesis method of nitrogen-doped carbon-coated In2O3-CdSe hexagonal nanorod, and comprises the following steps: dissolving indium nitrate tetrahydrate and terephthalic acid in an organic solvent, transferring the mixture into a reaction kettle after ultrasonic treatment for 10 minutes, heating the mixture for a period of time, centrifuging and collecting the product after the reaction is completed, cleaning the product with ethanol, and drying the product to obtain a MIL-68-In precursor with a hexagonal nanorod structure; dispersing the MIL-68-In precursor in an organic solvent containing dissolved cadmium acetate, transferring the mixture into a reaction kettle after ultrasonic treatment for 10 minutes, heating the mixture for a period of time, centrifuging and collecting the product after the reaction is completed, cleaning the product with ethanol for several times, drying the product, and using the product for further use, and then calcining the synthesized sample and selenium powder in a tube furnace to obtain In2O3-CdSe@N-C. The application synthesizes the In2O3-CdSe@N-C hexagonal nanorod photocatalyst through a solvothermal and calcination method, and the synthesized photocatalyst has higher photocatalytic activity than the MIL-68-In.

The application belongs to the field of inorganic semiconductor material synthesis, and particularly relates to a preparation method and application of large-size two-dimensional cadmium selenide nanosheet, wherein the preparation method is to select cadmium acetate and selenium powder as solutes, mix them uniformly with amine as a solvent, and then heat to controllably synthesize two-dimensional wurtzite cadmium selenide nanosheet with ultraviolet absorption peaks of 429 nm, 456 nm and 485 nm, 518 nm; the application avoids high-temperature and high-pressure operation by controlling reaction conditions, and obtains a convenient preparation method of cadmium selenide nanosheet by selecting suitable raw materials, thereby solving related problems existing in the synthesis of cadmium selenide nanosheet; the preparation method has low cost and wide application range, the prepared cadmium selenide nanosheet has excellent optical performance in addition to different thicknesses obtained by changing temperature and reaction time, and can be widely applied in the fields of biological sensing and photocatalysis.

The invention discloses a Bi12O17Cl2 / ZnCdS heterojunction photocatalyst as well as a preparation method and application thereof, belongs to the field of photocatalysts, and solves the problem that a CdS-based photocatalyst is limited in degradation efficiency. The preparation method comprises the following steps: dissolving Bi (NO3) 3.5 H2O, KCl and NH4Cl in an ethylene glycol solution, adjusting the pH value to 8-10, carrying out a hydrothermal reaction, and calcining the product to obtain a Bi12O17Cl2 precursor; the preparation method comprises the following steps: dispersing a Bi12O17Cl2 precursor in deionized water, sequentially adding zinc acetate dihydrate, cadmium acetate dihydrate and a Na2S. 9H2O solution to make the materials fully contact with Bi12O17Cl2, adjusting the pH value to 9-11, and carrying out a hydrothermal reaction; the problems of insufficient photoresponse, serious photocorrosion, carrier recombination and the like existing in an existing heterojunction system are solved, and unique advantages are shown in the aspects of stability and degradation efficiency.

The application discloses a kind of Bi 12 O 17 Cl2 / ZnCdS heterojunction photocatalyst and its preparation method and application, belong to photocatalyst field, solve the problem of CdS-based photocatalyst degradation efficiency limited.For preparation method:Bi (NO3) 3·5H2O, KCl and NH4Cl are dissolved in ethylene glycol solution, adjust pH to 8-10, carry out hydrothermal reaction, product calcination, Bi 12 O 17 Cl2 precursor is obtained;Bi 12 O 17 Cl2 precursor is dispersed in deionized water, zinc acetate dihydrate, cadmium acetate dihydrate and Na2S·9H2O solution are sequentially added, so that it is fully contacted with Bi 12 O 17 Cl2, adjust pH to 9-11, carry out hydrothermal reaction.The application not only overcomes the problems of insufficient light response, serious photo-corrosion and carrier recombination in the existing heterojunction system, but also shows unique advantages in stability and degradation efficiency.

The application relates to a preparation method and application of chiral two-dimensional cadmium sulfide nanosheets. The application aims to solve the problem that it is difficult to construct non-layered chiral two-dimensional inorganic nanomaterials. The method comprises the following steps: placing a first open reaction container and a second open reaction container in a sealable container, adding a cadmium acetate solution into the first open reaction container, then adding a left-rotational ibuprofen / chloroform solution drop by drop, adding a sodium sulfide aqueous solution into the second open reaction container, then adding a hydrochloric acid solution drop by drop, and finally sealing and standing. The application is used for preparing a circularly polarized light detection device for detecting left-rotational / right-rotational circularly polarized light. The application is used for the preparation and application of chiral two-dimensional cadmium sulfide nanosheets.

This invention discloses a method for synthesizing Mn using a solvothermal method. 0.43 Cd 0.57 This invention relates to a method for producing S / Cu2MoS4 photocatalysts, belonging to the field of catalyst technology. First, copper molybdenum sulfide is prepared using cuprous oxide as a template. A solvothermal method is then used to synthesize copper molybdenum sulfide with high purity and good crystallinity. Next, manganese cadmium sulfide is prepared using manganese acetate, cadmium acetate, sodium hydroxide, and thioacetamide as raw materials. Before the hydrothermal reaction, copper molybdenum sulfide is added, and manganese cadmium sulfide is successfully modified by constructing a heterojunction, thus synthesizing Mn. 0.43 Cd 0.57 The S / Cu2MoS4 photocatalyst improved the photocatalytic hydrogen production rate of manganese cadmium sulfide. Furthermore, the Mn prepared in this invention... 0.43 Cd 0.57 The S / Cu2MoS4 photocatalyst can produce hydrogen at a rate of 8233 μmol / (g·h), which is 2.08 times that of pure manganese cadmium sulfide and 1.24 times that of manganese cadmium sulfide loaded with 1% platinum.

This invention discloses a ZnCdS / APF composite photocatalyst, its preparation method, and its application, belonging to the field of photocatalysis technology. The composite photocatalyst uses a ZnCdS solid solution as the light-absorbing core and aminophenol-formaldehyde resin (APF) as the interface modification layer. The two are polymerized in situ to form a tight heterojunction. This invention uses zinc acetate, cadmium acetate, and thioacetamide as precursors to synthesize ZnCdS via ethylenediamine-assisted hydrothermal synthesis; then, using 3-aminophenol and formaldehyde as monomers, APF is grown in situ on the ZnCdS surface under ammonia catalysis, followed by washing and drying to obtain the final product. This preparation process is mild, requires no precious metals, and is easily scalable. The composite photocatalyst achieves a photocatalytic hydrogen peroxide production rate of up to 5318 μmol g under visible light irradiation and an oxygen atmosphere. ‑1 h ‑1 Compared to pure ZnCdS (2983 μmol g), ‑1 h ‑1 The photocatalyst exhibits a 78.3% improvement in light absorption capacity, carrier separation efficiency, and photoelectrochemical performance, all significantly superior to the pure-phase material. Characterization results, including SEM, UV-vis DRS, Mott-Schottky, EIS, and transient photocurrent response, confirm the synergistic enhancement effect of APF on ZnCdS. This composite photocatalyst shows broad application prospects in the green synthesis of H2O2.

The application discloses a kind of synthesis method for preparing structure is hydrangea-like MnCdS / In2S3 / NiAl-LDH photocatalyst by two-step hydrothermal method, belong to composite material and photocatalytic technical field.Sulfaceticamide (TAA), cadmium acetate dihydrate ((CH3COO)2Cd·2H2O), manganese acetate tetrahydrate (Mn(CH3COO)2·4H2O), indium nitrate 4.5 hydrate (In(NO3)3·4.5H2O), nickel nitrate hexahydrate (Ni(NO3)2·6H2O), aluminum nitrate nonahydrate (Al(NO3)3·9H2O), ammonium fluoride (NH4F), urea (CO(NH2)2) are used as raw materials, monomer is treated by two-step hydrothermal method, and hydrangea-like MnCdS / In2S3 / NiAl-LDH composite photocatalyst is obtained.The surface morphology, microstructure and photocatalytic activity are determined, and the product performance is greatly improved in the photocatalysis of degrading organic pollutants crystal violet and photolysis water to produce hydrogen.

The application discloses a kind of based on cadmium sulfide-prussian blue composite photocatalytic material and its preparation method and application.The composite photocatalytic material includes prussian blue nanoparticles and cadmium sulfide loaded on substrate, wherein, prussian blue nanoparticles are loaded on the surface of substrate, and prussian blue nanoparticles and cadmium sulfide are chemically connected to form heterojunction, and the preparation of photocatalytic material includes: substrate is soaked in the mixed solution of prussian blue nanoparticles and cadmium acetate, after closed reaction, drop sodium sulfide solution, after a period of time, substrate is taken out, washed and dried to obtain the composite photocatalytic material.The uranium adsorption performance of the composite photocatalytic material is good, the structure is stable, easy to recover, raw materials are abundant, reaction conditions are mild, steps are simple, and a large amount of production can be produced by only a small amount of cost, and it has excellent application potential in seawater uranium extraction, radioactive seawater treatment, recovery of precious metals, environmental remediation, industrial wastewater treatment and other fields.

The invention relates to the technical field of photocatalytic material preparation, in particular to a nickel / cadmium manganese sulfur modified photocatalytic material and a preparation method thereof.The preparation method comprises the following steps that S1, manganese acetate tetrahydrate, cadmium acetate dihydrate and thioacetamide are dissolved in a mixed solvent of deionized water and ethidene diamine, and a mixed solution is obtained; s2, reacting the mixed solution obtained in the step S1 to obtain a primary product; s3, carrying out acid treatment and heating treatment on the natural zeolite in sequence; s4, putting the natural zeolite treated in the step S3 into a nickel chloride hexahydrate aqueous solution to obtain natural zeolite loaded with nickel ions; and S5, adding the natural zeolite loaded with the nickel ions obtained in the step S4 into an ethanol water solution containing sodium chloride, and adding the primary product to react to obtain the photocatalytic material. The photocatalytic material prepared by the method is uniform in loading and free of agglomeration, and the catalytic effect of the photocatalytic material is effectively improved.

The invention provides a cobalt-coated cadmium sulfide photocatalytic hydrogen production material and a preparation method and application thereof, and relates to the technical field of photocatalytic materials.The preparation method of the cobalt-coated cadmium sulfide photocatalytic hydrogen production material specifically comprises the following steps that S1, thioacetamide and cadmium acetate dihydrate serve as raw materials, and CdS nanoparticles are prepared through a solvothermal method; s2, cobalt acetate tetrahydrate and the CdS nanoparticles prepared in the step S1 serve as raw materials, and the cobalt-coated cadmium sulfide photocatalytic hydrogen production material is prepared through an ion adsorption method. Compared with the prior art, the cobalt-coated cadmium sulfide photocatalytic hydrogen production material as well as the preparation method and the application thereof have the advantages that the autoxidation process of cadmium sulfide under the illumination condition is effectively inhibited, the dissolution of sulfur ions is reduced, the photochemical stability of the material is remarkably improved, and the service life of the material is prolonged.

The present invention provides a cadmium electroplating process method with high dispersibility and no hydrogen embrittlement effect. The method comprises the following steps: (1) adding sodium acetate and cadmium acetate to ethylene glycol liquid; (2) heating the mixture in (1) while performing magnetic stirring to form a clear and transparent liquid; (3) adding ammonium chloride to the liquid in (2); (4) adding ethanol to the liquid in (3) and continuing stirring for a period of time; (5) controlling the liquid temperature to decrease and maintain; (6) electroplating with a cadmium plate as an anode and a workpiece to be plated as a cathode; (7) taking out the plated workpiece and washing and drying it with ethanol. The present invention reduces the viscosity of the ionic liquid by adding ethanol with low viscosity and completely miscible with ethylene glycol, thereby improving the dispersibility of the plating solution, and at the same time adding an appropriate amount of ammonium chloride to compensate for the decrease in conductivity caused by the addition of ethanol, and finally achieving cadmium electroplating with high dispersibility and no hydrogen embrittlement effect.

This invention relates to the preparation and application of a carbon quantum dot-modified zinc cadmium selenide (ZNDS) sulfide with an embedded dual-field superhydrophilic photocatalyst for hydrogen production via water splitting, belonging to the field of photocatalytic hydrogen production technology. The invention uses citric acid and urea as raw materials to prepare hydrophilic carbon quantum dots via a hydrothermal method. Then, zinc acetate dihydrate, cadmium acetate dihydrate, thioacetamide, and a selenium powder-hydrazine hydrate solution are added to the carbon quantum dot system to achieve the preparation of an amide-bonded carbon quantum dot-modified ZNDS sulfide with an embedded dual-field superhydrophilic photocatalyst via a one-step hydrothermal method. The invention also discloses the application of this photocatalyst in hydrogen production via water splitting. Under the synergistic effect of multiple charge transport channels and photocatalysis-thermal catalysis, the photocatalyst significantly improves the directional separation and migration efficiency of photogenerated carriers, achieving a hydrogen production rate of 103.9~126.8 mmol·g under light-driven and thermally assisted conditions. cat ‑1 ·h ‑1 Furthermore, after eight consecutive uses, the photocatalytic activity remained above 91%. Therefore, the prepared photocatalyst has enormous potential for photocatalytic hydrogen production applications.

The application discloses a nitrogen-doped carbon polyhedron-sulfide composite photocatalyst and a preparation method and application thereof, and the preparation process is as follows: nitrogen-doped carbon polyhedron nonmetal cocatalyst powder is added into deionized water, after ultrasonic treatment, cadmium acetate is added, stirring is carried out, NaOH aqueous solution is added, then thioacetamide is added, uniform stirring is carried out, and hydrothermal reaction is carried out at 160-200 DEG C for 16-24 hours, so that the nitrogen-doped carbon polyhedron-sulfide composite photocatalyst is obtained. In the NCP@CdS composite photocatalyst prepared in the application, the nitrogen-doped carbon skeleton in the NCP provides an electron transmission channel and provides active sites required by a reaction, so that effective charge separation and migration from CdS to NCP are realized. Compared with original CdS, the NCP@CdS composite photocatalyst provided by the application exhibits more excellent visible light catalytic hydrogen production performance under different sacrificial agent systems.

The invention discloses a preparation method of a sulfur-cadmium-zinc-copper-based composite photocatalyst, which comprises the following steps: adding zinc acetate dihydrate, cadmium acetate dihydrate and copper nitrate trihydrate into deionized water, uniformly mixing, adding sodium sulfide nonahydrate, stirring and dissolving, adding titanium carbide, uniformly mixing to obtain a mixed solution, and drying to obtain the sulfur-cadmium-zinc-copper-based composite photocatalyst. Transferring the mixed solution into a stainless steel reaction kettle with a polytetrafluoroethylene lining, then putting the stainless steel reaction kettle into a drying oven for reaction, after the reaction is finished, centrifugally washing a reaction product, collecting a solid product, and drying to obtain a finished product. The one-dimensional quaternary metal sulfide CuZnCdS and the two-dimensional Ti3C2MXene are compounded, compounding of photon-generated carriers can be effectively inhibited, separation and transmission of the photon-generated carriers are accelerated, compared with an existing method, the method is easy to operate and low in cost, and the prepared photocatalyst material has excellent photocatalytic activity and is particularly suitable for preparing hydrogen through photocatalytic decomposition of water.

The invention provides a CdS / TFPT-DHHT-COF composite photocatalyst and a preparation method of the CdS / TFPT-DHHT-COF composite photocatalyst. The method comprises the following steps: mixing 1, 3, 5-tris (4-formylphenyl) triazine and 2, 5-bis (3-hydroxypropoxy) m-benzene diacylhydrazone (DHTH) in mesitylene, dioxane and glacial acetic acid to form a triazinyl covalent organic framework compound (TFPT-DHHT-COF), then adding cadmium acetate dihydrate, a dimethylformamide solvent and thiourea, carrying out a reaction for 2-4 hours at the temperature of 80-90 DEG C, and carrying out reduced pressure distillation to obtain the triazinyl covalent organic framework compound (TFPT-DHHT-COF). The preparation method comprises the following steps: adding a triazinyl covalent organic framework compound into a reaction kettle, and enabling a cadmium sulfide crystal to grow on the surface of the triazinyl covalent organic framework compound, so as to obtain the covalent organic framework / cadmium sulfide composite photocatalyst (CdS / TFPT-DHHT-COF).

The utility model belongs to the field of sampling of hydrogen sulfide, and particularly relates to a portable sampling device for measuring hydrogen sulfide, which comprises a gas absorption column, absorption liquid is arranged in the gas absorption column, one side of the gas absorption column is connected with a flow meter through a gas guide pipe, one end of the flow meter is provided with a gas inlet pipe, and one end of the gas inlet pipe is connected with a sampling port; an air inlet three-way valve and a steady flow three-way valve are respectively arranged on the air inlet pipe and the air guide pipe, and one end of the air inlet three-way valve and one end of the steady flow three-way valve are both used for emptying and exhausting. Due to the fact that the absorption liquid is the cadmium acetate-sodium chloride solution with the freezing point ranging from-10 DEG C to-20 DEG C, it is avoided that hydrogen sulfide gas in carbon dioxide exhaust gas is dissolved in condensed water, and consequently the determination result of the gas chromatography method is low, the gas absorption column is wrapped with the heat preservation layer, and sample collection in the alpine region is guaranteed.

This invention relates to a nickel sulfide / cadmium sulfide / sulfur-doped graphitic carbon nitride dual heterojunction composite photocatalyst and its preparation method, belonging to the field of photocatalysis technology. S-doped g-C3N4 nanosheet powder is mixed uniformly with nickel chloride hexahydrate, cadmium acetate, thioacetamide, hexadecyltrimethylammonium bromide, and polypyrrole in ammonia water. The molar ratio of nickel chloride hexahydrate, cadmium acetate, and thioacetamide is (1-5):(1-6):(2-12) to obtain a precursor solution. The precursor solution is then heated at 120-180 °C to obtain a reaction solution. The precipitate in the reaction solution is washed and dried, effectively promoting the separation and transport of photogenerated charges. Furthermore, the dual heterojunction provides a rapid charge transfer pathway for the rapid migration of electrons and holes during the catalytic process, thereby achieving the goal of accelerating the separation of photogenerated charges and ultimately significantly improving the photocatalytic hydrogen evolution activity of g-C3N4.

The invention provides a preparation method and application of a quantum dot composite fluorescent microsphere solution, and the preparation method comprises the following steps: dissolving sodium selenite and sodium sulfite in purified water, stirring, heating and refluxing to obtain a Na2SeSO3 solution; dissolving cadmium acetate in purified water to adjust the pH value, and injecting a stabilizer and a Na2SeSO3 solution to obtain a CdSe quantum dot solution; znSO4. 7H2O is dissolved in purified water, MPA is added, the pH value is adjusted, NaHS powder is added, and a ZnS shell layer precursor solution is prepared; adding the ZnS shell layer precursor solution into the CdSe quantum dot solution, performing heating reflux, and performing centrifugal drying to obtain CdSe / ZnS quantum dots; the preparation method comprises the following steps: coating CdSe / ZnS quantum dots in carboxylated polystyrene microspheres, and carrying out oscillation, swelling equilibrium, centrifugation, washing and drying to obtain a CdSe / ZnS (at) PS-COOH quantum dot fluorescent microsphere solution. The stability and fluorescence efficiency of a quantum dot solution can be effectively improved, and meanwhile, the dog and cat helicobacter pylori antigen detection test strip prepared from the quantum dot fluorescent microspheres combines the advantages of quick reading detection and high sensitivity, and is suitable for on-site quick screening or quantitative detection.

The present application discloses a high-entropy alloy sulfide / two-dimensional nano composite material, a preparation method therefor, and an application thereof. According to the present application, zinc acetate, copper acetate, ferric acetate, nickel acetate, and cadmium acetate are dissolved in an organic solvent, then a sulfide and a two-dimensional nano material are added, dispersed, and uniformly mixed for reaction, and the high-entropy alloy sulfide / two-dimensional nano composite material is prepared in situ in one step. According to the present application, tests show that a nano high-entropy alloy sulfide has an electromagnetic wave absorption effect in a wave band of 6-18 GHz, and after the nano high-entropy alloy sulfide is compounded with the two-dimensional nano material, the wave band of the electromagnetic wave absorption effect is expanded to 5-18 GHz, and the electromagnetic wave absorption capability is improved.

The invention relates to a circularly polarized light-emitting nonporous MOF-dye composite material. The preparation method comprises the following steps: mixing methanol and deionized water according to a volume ratio of (1-1.5): 3 to form a mixed solution; l / D-valine, sodium carbonate and 4-pyridylaldehyde are sequentially added into the mixed solution, and the volume ratio of L / D-valine to sodium carbonate to 4-pyridylaldehyde to the mixed solution is (0.2-0.3): (0.05-0.1): (0.3-0.4): 1; after the reaction, forming a first reaction solution; sodium borohydride is added into the first reaction liquid for reaction, and the volume ratio of the sodium borohydride to the mixed liquid is 0.2: 1; after the reaction, forming a second reaction solution; dropwise adding hydrochloric acid into the second reaction liquid, and uniformly mixing after dropwise adding the hydrochloric acid to obtain a nonporous chiral MOF ligand; the preparation method comprises the following steps: adding a ligand of a nonporous chiral MOF, cadmium acetate and a rhodamine 6G (R6G) dye into a reaction kettle according to a ratio of 1: 0.2: 0.05, and washing to obtain the circularly polarized light-emitting nonporous MOF-dye composite material which is stable in structure and emits light.

The invention belongs to the technical field of catalyst preparation, and particularly relates to a CdS / ZnIn2S4 nanoflower rod catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: adding a structure-directing agent ammonium into an ethylenediamine solution of cadmium acetate and thiourea, and carrying out solvothermal reaction to obtain a CdS nanorod; the CdS nanorod, polyvinylpyrrolidone, zinc chloride, indium chloride and thioacetamide are mixed for a low-temperature solvothermal in-situ synthesis reaction, the CdS / ZnIn2S4 nanoflower rod catalyst is obtained, and the dielectric constant of a solvent of the low-temperature solvothermal in-situ synthesis reaction is 30-70. The catalyst provided by the invention is high in stability and good in catalytic performance, and has a good application prospect in the fields of catalytic reduction of CO2 and degradation of antibiotics.

This invention discloses a method for preparing a photocatalyst for the C-C coupling conversion of methanol to ethylene glycol and its application. Zinc acetate dihydrate, indium chloride tetrahydrate, and thioacetamide, as well as zinc acetate dihydrate, cadmium acetate dihydrate, and thioacetamide, are used in a hydrothermal process to generate ZnIn2S4 nanosheets and Zn... 0.5 Cd 0.5 S nanorods were then electrostatically assembled to form a heterojunction structure. An aqueous nickel chloride solution was added during the reaction to form a nickel-modified ZnIn2S4 / Zn nanorod. 0.5 Cd 0.5 S-heterojunction solid catalyst. This invention prepares a highly active photocatalytic catalyst for the conversion of methanol to ethylene glycol through electrostatic assembly and photoreduction.

This invention discloses a ternary composite photocatalyst containing carbon quantum dots, its preparation method, and its applications. The ternary composite photocatalyst is prepared in a one-pot process using graphitic carbon nitride, carbon quantum dots, cadmium acetate, zinc acetate, and thiourea via a high-temperature oil bath method. This series of photocatalysts can catalyze the degradation of the antibiotic tetracycline hydrochloride under visible light irradiation; it also catalyzes the depolymerization of lignin and its model compounds under visible light irradiation, exhibiting good stability and reusability. This invention utilizes a one-pot method for photocatalyst preparation, which is simple and convenient to operate; the catalyst possesses excellent photocatalytic performance under visible light; it can efficiently degrade tetracycline hydrochloride under visible light; furthermore, it efficiently catalyzes the conversion of lignin to vanillin, while simultaneously efficiently converting lignin model compounds to aromatic phenolic compounds. This invention offers advantages such as convenient catalyst synthesis, low cost, good stability, high photocatalytic degradation efficiency, and high product selectivity.