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A composite material for photocatalytic degradation of organic matter and its application

A composite material and organic technology, applied in chemical/physical process, catalyst activation/preparation, special compound water treatment, etc., to achieve the effect of excellent degradation ability, simple preparation process and stable performance

Inactive Publication Date: 2021-03-16
朱修齐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used photocatalysts are TiO 2 Nanoparticles, etc., however, the band gap of the material itself limits its ability to absorb only the ultraviolet spectral band in the solar spectrum, which leads to its own application limitations

Method used

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  • A composite material for photocatalytic degradation of organic matter and its application
  • A composite material for photocatalytic degradation of organic matter and its application
  • A composite material for photocatalytic degradation of organic matter and its application

Examples

Experimental program
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Effect test

Embodiment 1

[0029] This embodiment provides a composite material for photocatalytic degradation of organic matter, which is prepared by the following method:

[0030] (1) Mix 2.4g of bismuth nitrate with 60ml of deionized water and stir for 10 minutes, add 2.6g of copper nitrate powder, stir for 10 minutes until the solution turns blue, then add 1.6g of NaOH, stir until flocculation, then continue stirring for 10 minutes, Add 1g thiourea and 0.16g CTAB again, obtain brown mixed solution after stirring for 10 minutes;

[0031] (2) Put the mixed solution into a hydrothermal kettle, heat it to 180° C., and keep it warm for 12 hours; after the reaction is finished, wash it repeatedly three times and then dry it to obtain a bismuth-based oxide;

[0032] (3) Get described bismuth series oxide 0.5g and 0.0025g silver nitrate to be mixed with aqueous solution, add 2.5ml reducing agent (1.0g sodium hydroxide and 0.18915g sodium borohydride are dissolved in water, settle to 50ml), stir quickly Aft...

Embodiment 2

[0035] This embodiment provides a composite material for photocatalytic degradation of organic matter. Compared with Embodiment 1, the only difference is that the amount of silver nitrate used is 0.005g.

Embodiment 3

[0037] This embodiment provides a composite material for photocatalytic degradation of organic matter. Compared with Embodiment 1, the only difference is that the amount of silver nitrate used is 0.0075g.

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Abstract

The invention relates to a composite material for photocatalytic degradation of organic matter. The composite material is prepared by a method including the following steps: (1) fully mixing bismuth-containing compounds and copper-containing compounds in water, adding inorganic alkali until flocculation, After sufficient stirring, add thiourea and surfactant and mix thoroughly to obtain a mixed solution; (2) subject the mixed solution to a hydrothermal reaction, wash and dry the reaction product to obtain a bismuth oxide; (3) The bismuth-based oxide and silver nitrate are mixed in water, a reducing agent is added to perform a reduction reaction, and the reaction product is washed and dried to obtain the mixture. The composite material provided by the invention has a simple preparation process, easy parameter control, and stable performance. It has excellent degradation ability of organic matter, especially organic dyes and organic pollutants, in the visible light region. It is a type of composite material with great development potential and market prospect. A vast range of environmentally friendly purification materials.

Description

technical field [0001] The invention relates to the field of photocatalytic degradation of organic matter, in particular to a composite material for photocatalytic degradation of organic matter. Background technique [0002] Environmental pollution is an important issue that people face in the 21st century. While enjoying the benefits brought by the rapid development of science and technology, people must face deteriorating environmental problems. A lot of environmental pollution has seriously threatened people's health, and even further caused people's death. The use of solar energy to degrade some harmful organic substances has become a clean, simple and promising method. Commonly used photocatalysts are TiO 2 Nanoparticles, etc., however, the band gap of the material itself limits its ability to absorb only the ultraviolet spectral band in the solar spectrum, which leads to its own application limitations. Contents of the invention [0003] The purpose of the present...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/843B01J23/89B01J37/03B01J37/10B01J37/16C02F1/30C02F101/30C02F101/34C02F101/38
CPCC02F1/30B01J23/8973B01J37/031B01J37/10B01J37/16C02F2101/30C02F2101/40C02F2101/38C02F2101/34C02F2305/10B01J35/39
Inventor 朱修齐
Owner 朱修齐