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Silver iodide photocatalyst, preparation method and application thereof

A technology of photocatalyst and silver iodide, which is applied in the field of photocatalytic materials to achieve high stability and expand the application field

Inactive Publication Date: 2013-03-27
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a silver iodide photocatalyst and its preparation method and application, which solves the current problems about the silver iodide photocatalyst and its application in photocatalytic hydrogen production

Method used

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  • Silver iodide photocatalyst, preparation method and application thereof
  • Silver iodide photocatalyst, preparation method and application thereof
  • Silver iodide photocatalyst, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Preparation of Silver Iodide Photocatalyst with Hollow Structure

[0034] Add 108mg of polyvinylpyrrolidone and 22mg of sodium chloride into a 50mL round-bottomed flask containing 15mL of glycerol, dissolve in a 60°C oil bath with magnetic stirring, and then inject 1mL of silver nitrate in glycerol solution dropwise ( 52mg / mL), react at 60°C for 30min; then raise the temperature to 200°C and react for 10min to obtain the AgCl precursor; transfer the synthesized precursor to an oil bath at 60°C, at a constant speed of 0.5mL / min Ethylene glycol solution (11 mmol / L) of potassium iodide was added dropwise, and the molar ratio of iodide ion to silver nitrate added dropwise was 1.2:1. After the reaction, the product is centrifuged and washed with deionized water to obtain a silver iodide photocatalyst with a hollow structure.

[0035] Picture 1-1 It is the SEM picture of the AgI hollow structure prepared in Example 1. It can be seen that the synthesized AgI is a spherical h...

Embodiment 2

[0044] Add 65mg of polyvinylpyrrolidone and 39mg of sodium chloride into a 50mL round-bottomed flask containing 15mL of ethylene glycol, dissolve with magnetic stirring in an oil bath at 60°C, and then inject 1mL of silver nitrate in glycerin (52mg / mL), react at 60°C for 30min; then raise the temperature to 160°C and react for 1h to obtain the AgBr precursor; transfer the synthesized precursor to an oil bath at 60°C, and drop it at a constant rate of 0.5mL / min Ethylene glycol solution of potassium iodide (11mmol / L) was added, and the molar ratio of iodide ion to silver nitrate added dropwise was 1.6:1. After the reaction is completed, the product is centrifuged and washed with deionized water to obtain a silver iodide photocatalyst with a hollow structure.

[0045] Pic 4-1 This is the SEM picture of the AgI hollow structure prepared in Example 2. The synthesized AgI is a polyhedral hollow cage structure with regular shape and uniform size;

[0046] Figure 4-2 This is the...

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Abstract

The invention provides a silver iodide photocatalyst, a preparation method thereof and an application thereof, belonging to the technical field of photocatalytic materials. The technical scheme is that the silver iodide photocatalyst is silver iodide with a hollow structure, wherein expression formula of the silver iodide is AgI. The invention further provides a preparation method and an application for the catalyst. The catalyst prepared by the preparation method provided by the invention is a hollow structure. The catalyst has the performances of preparing hydrogen by catalytic photolysis and degrading organic dyes, and is applicable to the field of new energy development and environment pollution government.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials, and in particular relates to a hollow-structure silver iodide photocatalyst used in photocatalytic hydrogen production and degradation of organic pollutants in water, as well as its preparation method and application. Background technique [0002] Environmental pollution and energy crisis are two very serious challenges facing mankind in the 21st century. Photocatalysis has become an ideal technology for environmental pollution control and clean energy production due to its deep reaction at room temperature and the ability to directly use solar energy as a light source to drive. Since Professor Fujishima and Honda discovered in 1972 that titanium dioxide electrodes could be used to decompose water to generate hydrogen and oxygen under ultraviolet light, photocatalytic technology has attracted widespread attention of scientists from all over the world. [0003] After decades of r...

Claims

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Application Information

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IPC IPC(8): B01J27/08C01G5/02C01B3/04C02F1/30C02F101/30
CPCY02E60/364Y02E60/36Y02W10/37
Inventor 安长华王吉壮刘俊学张锐李阳张钦辉薛庆忠
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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