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Preparation method and application of bismuth titanium tungstate photocatalyst

A photocatalyst, titanium tungstic acid technology, applied in chemical instruments and methods, physical/chemical process catalysts, tungsten compounds, etc., can solve the problems of large sample particle size, low photocatalytic activity, high calcination temperature, etc., and achieve reuse rate High, high separation efficiency, simple preparation conditions

Inactive Publication Date: 2017-01-04
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new preparation method of bismuth titanium tungstate material and its application in photocatalysis, which solves the problems of high calcination temperature, high energy consumption and too large particle size of the prepared sample in the traditional preparation method. , low photocatalytic activity, etc.

Method used

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  • Preparation method and application of bismuth titanium tungstate photocatalyst
  • Preparation method and application of bismuth titanium tungstate photocatalyst
  • Preparation method and application of bismuth titanium tungstate photocatalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Dissolve 18 mmol of bismuth nitrate in 60 mL of glacial acetic acid as solution I, and dissolve 9 mmol of tetrabutyl titanate and 3 mmol of tungsten chloride in 20 mL of ethylene glycol monomethyl ether as solution II. Add solution I dropwise to solution II, stir well, heat and stir at 80 °C for 3 h, and finally obtain a brown powder. Weigh 0.2 g of the above brown powder and calcinate it in a muffle furnace at 300 °C for 8 h to obtain Bi 6 Ti 3 WO 18 The nanosheets are the said bismuth titanium tungstate photocatalytic material.

Embodiment 2

[0024] Dissolve 6 mmol of bismuth nitrate in 20 mL of glacial acetic acid as solution I, and dissolve 3 mmol of tetrabutyl titanate and 1 mmol of tungsten chloride in 20 mL of ethylene glycol monomethyl ether as solution II. Add solution I dropwise to solution II, stir well, heat and stir at 130 °C for 3 h, and finally obtain a brown powder. Weigh 0.2 g of the above brown powder and calcinate it in a muffle furnace at 600 °C for 6 h to obtain Bi 6 Ti 3 WO 18 The nanosheets are the said bismuth titanium tungstate photocatalytic material.

Embodiment 3

[0026] Dissolve 18 mmol of bismuth nitrate in 20 mL of glacial acetic acid as solution I, and dissolve 9 mmol of tetrabutyl titanate and 3 mmol of tungsten chloride in 40 mL of ethylene glycol monomethyl ether as solution II. Add solution I dropwise to solution II, stir well, heat and stir at 60 °C for 5 h, and finally obtain a brown powder. Weigh 0.2 g of the above brown powder and calcinate it in a muffle furnace at 400 °C for 1 h to obtain Bi 6 Ti 3 WO 18 The nanosheets are the said bismuth titanium tungstate photocatalytic material.

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Abstract

The invention discloses a preparation method and an application of a bismuth titanium tungstate photocatalyst and belongs to the technical field of material preparation and environmental pollution control. The chemical formula of the bismuth titanium tungstate photocatalystis Bi6Ti3WO18, bismuth nitrate, tetrabutyl titanate and tungsten hexachloride are taken as initiators, a precursor is prepared through esterification complexation, and a Bi6Ti3WO18 nanosheet with photocatalytic activity is prepared through thermal treatment. The prepared photocatalyst has the characteristics of smaller particle size, large specific surface area, high visible light response and high photocatalytic performance. The preparation process is simple, convenient, low in energy consumption and cost and high in yield, meets the actual production requirement and has greater application potential.

Description

technical field [0001] The invention belongs to the technical field of material preparation and environmental pollution control, and specifically relates to a novel preparation method and application of a bismuth titanium tungstate photocatalyst. Background technique [0002] With the continuous development of industrial economy, the massive discharge of sewage has brought about serious water pollution. As a component of industrial wastewater, printing and dyeing wastewater is one of the main goals of wastewater treatment. The traditional treatment methods for this kind of wastewater include physical, chemical and biological means. However, the traditional treatment methods all have the characteristics of high cost, low efficiency, and inability to completely remove pollutants. As a new method, photocatalytic technology can be used in the degradation of organic pollutants, selective organic synthesis, photolysis of water to produce hydrogen, CO 2 Research on reduction and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/31C01G41/00
CPCC01G41/006B01J23/31C01P2004/64B01J35/39B01J35/40
Inventor 梁诗景陈维航高伟祝淑颖毕进红吴棱
Owner FUZHOU UNIV
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