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An Ag3VO4/TiO2 compound nano-wire having visible light activity, a preparation method and applications thereof

A technology of composite nanoparticles and nanowires, applied in the field of environmental pollution control, can solve the problems of reducing the efficiency of semiconductor photocatalysts, achieve good visible light absorption performance, improve photocatalytic oxidation and degradation of organic pollutants, and be easy to operate

Inactive Publication Date: 2013-09-11
DALIAN NATIONALITIES UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For solar energy, its main energy is concentrated in the visible light range of 400-600nm, which greatly reduces the TiO 2 The efficiency of semiconductor photocatalysts, therefore, how to achieve TiO 2 Visible light activity of semiconductor photocatalysts, efficient use of visible light in sunlight is TiO 2 One of the key contents of semiconductor photocatalyst research

Method used

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  • An Ag3VO4/TiO2 compound nano-wire having visible light activity, a preparation method and applications thereof
  • An Ag3VO4/TiO2 compound nano-wire having visible light activity, a preparation method and applications thereof
  • An Ag3VO4/TiO2 compound nano-wire having visible light activity, a preparation method and applications thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Ag with visible light activity 3 VO 4 / TiO 2 A method for preparing a composite nanowire, comprising the steps of:

[0038] ①Ag 3 VO 4 Preparation of:

[0039] 0.76g of NH 4 VO 3 Dissolve in 0.76g of 0.65M NaOH solution to form NaVO 3 solution; 2.28g of 0.2M AgNO 3 solution was added to NaVO 3 After mixing the solution, add it to a polytetrafluoroethylene reactor, and conduct a hydrothermal reaction at 200°C for 48 hours. After the reaction, wash the precipitate with deionized water and ethanol, filter, and dry;

[0040] ②Ag 3 VO 4 / TiO 2 Preparation of composite nanoparticles:

[0041] Mix 16.92g of tetrabutyl titanate with 35.55g of absolute ethanol to obtain a solution; mix 40ml of absolute ethanol, 3ml of nitric acid and 15ml of water to obtain b solution; add b solution to a Mix in the solution to get TiO 2 Sol, 0.02g of Ag 3 VO 4 Add to TiO 2 Ultrasound in the sol for 30min, let stand for 24h, and dry;

[0042] ③Ag 3 VO 4 / TiO 2 Preparation o...

Embodiment 2

[0045] The difference with embodiment 1 is:

[0046] ②Ag 3 VO 4 / TiO 2 Preparation of composite nanoparticles:

[0047] 0.4g Ag 3 VO 4 Add to TiO 2 Sonicate in the sol for 30min, let stand for 24h, and dry.

Embodiment 3

[0049] The difference with embodiment 1 is:

[0050] ②Ag 3 VO 4 / TiO 2 Preparation of composite nanoparticles:

[0051] 0.1g Ag 3 VO 4 Add to TiO 2 Sonicate in the sol for 30min, let stand for 24h, and dry.

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Abstract

The present invention relates to a preparation method for an Ag3VO4 / TiO2 compound nano-wire having visible light activity, belonging to the technical field of environmental pollution control. The preparation method comprises steps for preparing Ag3VO4 / TiO2 compound nano-wire, and specifically the steps are as follows: Ag3VO4 / TiO2 compound nano-particles are added to an alkaline solution and dispersed, and is subjected to a hydrothermal reaction at a temperature of 120 ~ 250 DEG C for 24 ~ 56h, and after the reaction is completed, obtained precipitate is washed and dried, and is calcined at 100 ~ 800 DEG C for 3 ~ 8h. According to the present invention, the Ag3VO4 / TiO2 compound nano-wire has beneficial effects of a large specific surface area and a large adsorption capacity.

Description

technical field [0001] The present invention relates to a kind of Ag with visible light activity 3 VO 4 / TiO 2 The composite nanowire and its preparation method and application belong to the technical field of environmental pollution control. Background technique [0002] With the continuous development and progress of human society, energy crisis and environmental problems are two severe challenges that human beings must face in the 21st century. How to effectively control and control the pollution of various chemical pollutants to the environment is the focus of comprehensive environmental management. . In recent years, semiconductor photocatalytic oxidation technology, as one of the advanced oxidation technologies, is being extensively studied by scholars at home and abroad. This technology can use solar energy as energy to degrade pollutants in the environment, effectively use solar energy, and reduce people's Energy use. [0003] Semiconductor photocatalytic oxidat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/68B01D53/86
Inventor 邹学军
Owner DALIAN NATIONALITIES UNIVERSITY
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