Preparation method of porous ZnIn2S4 photo-catalyst

A photocatalyst, znin2s4 technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low catalytic efficiency and long time consumption, achieve high catalytic activity, reduce recombination probability, and prepare short time effect

Inactive Publication Date: 2012-12-26
INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
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Problems solved by technology

[0003] The present invention is to solve existing porous ZnIn 2 S 4 In the preparation method, the preparation process takes a long time, and the porous ZnIn 2 S 4 In order to solve the problem of low catalytic efficiency, a porous ZnIn 2 S 4 Preparation method of photocatalyst

Method used

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  • Preparation method of porous ZnIn2S4 photo-catalyst
  • Preparation method of porous ZnIn2S4 photo-catalyst
  • Preparation method of porous ZnIn2S4 photo-catalyst

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specific Embodiment approach 1

[0018] Specific embodiment one: a kind of porous ZnIn in this embodiment 2 S 4 The preparation method of photocatalyst is realized through the following steps:

[0019] 1. Under the condition of ultrasonic power of 100W~150W, add bromoalkylpyridine template agent into distilled water and vibrate and mix for 10min~20min to make bromoalkylpyridine with a concentration of 0.01mol / L~0.05mol / L solution; according to the ratio of 1:2:(6~8) by molar ratio, take divalent zinc salt, trivalent indium salt and thioacetamide respectively and join in the above-mentioned bromoalkylpyridine solution, wherein thioacetamide The concentration in the reaction solution is 0.1mol / L~0.5mol / L. Under the condition of ultrasonic power of 100W~150W, after the above reaction solution is vibrated and mixed for 10min~20min, the pH value of the reaction solution is adjusted to 1~7, wherein The divalent zinc salt is zinc nitrate, zinc chloride, zinc sulfate or zinc acetate, and the trivalent indium salt i...

specific Embodiment approach 2

[0026] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, the templating agent bromoalkylpyridine is added to distilled water and vibrated and mixed for 12min~18min to make the concentration 0.02mol / L~0.04mol / L bromoalkylpyridine solution. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0027] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 is that in step 1, the template agent bromoalkylpyridine is added to distilled water and vibrated and mixed for 15 minutes to prepare a bromoalkylpyridine solution with a concentration of 0.03mol / L . Other steps and parameters are the same as those in Embodiment 1.

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Abstract

The invention discloses a preparation method of a porous ZnIn2S4 photo-catalyst, relating to a preparation method of a photo-catalyst and solving the problems of long consumed time of a preparation process and low porous ZnIn2S4 catalysis efficiency existing in the conventional ZnIn2S4 preparation method. The preparation method is realized through the following steps of: 1, adding bivalent zinc salt, trivalent indium salt and thioacetamide in bromoalkyl pyridine solution and adjusting pH value of reaction solution; 2, transferring reaction solution into a microwave reaction kettle, performing microwave hydrothermal treatment for 0.5-2 hours under the condition of 100-200 DEG C and then naturally cooling to room temperature; and 3, taking a sample out of the reaction kettle, washing with distilled water and absolute ethyl alcohol in sequence, and drying at certain temperature and under vacuum degree to prepare the porous ZnIn2S4 photo-catalyst. The porous ZnIn2S4 photo-catalyst prepared by the invention is suitable for treatment processes of industrial wastewater and toxic gas H2S.

Description

technical field [0001] The invention relates to a preparation method of a photocatalyst. Background technique [0002] With the rapid development of the economy, the pollution and destruction of the ecological environment have threatened the survival and development of human beings. Therefore, saving material resources and energy resources, reducing waste and environmentally harmful substances (including three wastes and noise, etc.) emissions, protecting the ecological environment, It is the focus of attention of countries all over the world. Methyl orange, methylene blue, and rhodamine B are organic macromolecular industrial pollutants, using multinary metal sulfide photocatalysts such as porous ZnIn 2 S 4 , can oxidize methyl orange, methylene blue and rhodamine B into carbon dioxide and water, reduce environmental pollution; at the same time, the photocatalyst can also decompose H 2 S and other automobile exhaust produces hydrogen, completing the transformation from s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J35/10A62D3/17A62D101/28
Inventor 白雪峰张国中单雯妍
Owner INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
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