10 results about "Cadmium acetate" patented technology

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 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 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.

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 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.