Method for preparing transition metal ion-doped porous CdIn2S4 photocatalyst

A technology of transition metal ions and photocatalysts, which is applied in the field of preparation of ion-doped porous CdIn2S4 photocatalysts, can solve the problems of low photocatalytic activity of photocatalysts, achieve simple operation, good crystallinity and chemical stability, and simple process Effect

Inactive Publication Date: 2011-06-22
HARBIN 6 RING PETROCHEM TECHN DEVCORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention is to solve existing CdIn 2 S 4 The problem of low photocatalytic activity of

Method used

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  • Method for preparing transition metal ion-doped porous CdIn2S4 photocatalyst
  • Method for preparing transition metal ion-doped porous CdIn2S4 photocatalyst
  • Method for preparing transition metal ion-doped porous CdIn2S4 photocatalyst

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specific Embodiment approach 1

[0010] Specific implementation mode 1: This implementation mode transition metal ion doping porous CdIn 2 S 4 The preparation method of photocatalyst, carries out as follows: one, divalent cadmium salt, trivalent indium salt and thioacetamide are dissolved in water or non-aqueous solvent, and the mol ratio of Cd, In and S is 1: 2: 8. The molar ratio of divalent cadmium salt to water or non-aqueous solvent is 1:2000, then add template agent, the concentration of template agent is 6.8×10 -3 ~5.6×10 -2 mol / L, at 35°C, use 50KHz ultrasonic treatment for 5-10min until completely dissolved; 2. Then add transition metal salt, the mass of transition metal salt is 0.1%-5.0% of the mass of divalent cadmium salt, and then at 30-80°C Under ultrasonic treatment for 20-40min, the ultrasonic frequency is 50-99KHz, and a yellow colloidal precipitate is obtained; 3. Transfer the yellow colloidal precipitate to a polytetrafluoroethylene-lined autoclave, and heat-treat at 120-200°C for 6- 24h...

specific Embodiment approach 2

[0013] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the concentration of template agent in step one is 1×10 -2 ~5×10 -2 mol / L. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0014] Specific embodiment three: the difference between this embodiment and specific embodiment one is: the concentration of template agent in step one is 2×10 -2 ~3×10 -2 mol / L. Others are the same as in the first embodiment.

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Abstract

The invention relates to a method for preparing a transition metal ion-doped porous CdIn2S4 photocatalyst. The invention aims to solve the problem of low catalytic activity in the conventional CdIn2S4 photocatalyst. The method comprises the following steps of: 1, dissolving bivalent cadmium salt, trivalent indium salt and thioacetamide into water or a nonaqueous solvent, adding a template agent and performing ultrasonication until the bivalent cadmium salt, the trivalent indium salt and the thioacetamide are dissolved completely; 2, adding transition metal salt and performing ultrasonication to obtain yellow colloidal precipitate; 3, performing heat treatment, cooling to room temperature, performing centrifugation, collecting the precipitate, and washing with distilled water; and 4, performing centrifugation, collecting the precipitate, ultrasonically washing with absolute ethanol, performing suction filtration and performing vacuum drying to obtain the transition metal ion-doped porous CdIn2S4 photocatalyst. The method is simple in process and simple and convenient in operation; no other impurities are produced; the prepared transition metal ion-doped porous CdIn2S4 photocatalyst has high visible light catalytic hydrogen production activity; and the method is applied in the field of photocatalytic materials.

Description

technical field [0001] The invention relates to an ion-doped porous CdIn 2 S 4 Preparation method of photocatalyst. Background technique [0002] With the rapid development of the economy, the problems of energy shortage and environmental pollution are becoming more and more prominent. Using solar photocatalysis to split water and hydrogen sulfide provides an environmentally friendly way to convert solar energy into hydrogen energy. However, most photocatalysts have large band gaps, photocatalytic reactions require high energy excitation, and the activity of splitting water to produce hydrogen under visible light is not ideal. It is of great significance to develop high-efficiency photocatalysts with visible light response. With the development of functional materials, the development of porous metal sulfide photocatalysts with high catalytic performance has become a hotspot in materials science research. [0003] Ternary metal sulfide AB m C n (A=Zn, Cd, etc; B=Al, Ga,...

Claims

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Application Information

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IPC IPC(8): B01J27/04B01J37/00
Inventor 白雪峰李锦书
Owner HARBIN 6 RING PETROCHEM TECHN DEVCORP
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