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SiO2/ZrO2 composite visible-light-driven photocatalyst and preparation method thereof

A catalyst and visible light technology, applied in physical/chemical process catalysts, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of complex preparation methods, poor catalytic activity, and low adsorption efficiency, and achieve simple preparation methods and low preparation costs , The effect of increasing the specific surface area

Inactive Publication Date: 2018-09-14
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of SiO 2 / ZrO 2 The composite visible light catalyst and its preparation method can solve the problems of low adsorption efficiency and poor catalytic activity of the visible light catalyst to dye pollutants, as well as the complicated and high cost of the existing preparation methods

Method used

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  • SiO2/ZrO2 composite visible-light-driven photocatalyst and preparation method thereof
  • SiO2/ZrO2 composite visible-light-driven photocatalyst and preparation method thereof
  • SiO2/ZrO2 composite visible-light-driven photocatalyst and preparation method thereof

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Effect test

Embodiment 1

[0027] (1) Configuration of the zirconium oxychloride precursor solution: Weigh a certain mass of citric acid and zirconium oxychloride respectively according to the mass ratio of 1.5:1 for use, and dissolve the citric acid and zirconium oxychloride in 20ml of deionized water, The zirconium oxychloride precursor solution was obtained, and stirred by magnetic force for 30 min.

[0028] (2) Configuration of ethyl orthosilicate solution: calculate the required amount of ethyl orthosilicate according to the molar ratio of zirconium oxychloride and ethyl orthosilicate at 0.5:3, and measure them respectively according to the volume ratio of 1:2 A certain volume of tetraethyl orthosilicate and absolute ethanol were mixed evenly, and magnetically stirred for 10 minutes.

[0029] (3) Configuration of the silicon-zirconium precursor solution: under continuous magnetic stirring, add the orthosilicate solution prepared in step 2 dropwise to the zirconium oxychloride precursor solution, an...

Embodiment 2

[0037] (1) Configuration of the zirconium oxychloride precursor solution: Weigh a certain mass of citric acid and zirconium oxychloride for use according to the mass ratio of 2:1, and dissolve the citric acid and zirconium oxychloride in 25ml of deionized water, The zirconium oxychloride precursor solution was obtained, and stirred by magnetic force for 30 min.

[0038] (2) Configuration of ethyl orthosilicate solution: calculate the required amount of ethyl orthosilicate according to the molar ratio of zirconium oxychloride and ethyl orthosilicate as 1:3, and measure them respectively according to the volume ratio of 1:3 A certain volume of tetraethyl orthosilicate and absolute ethanol were mixed evenly, and magnetically stirred for 10 minutes.

[0039] (3) Configuration of the silicon-zirconium precursor solution: under continuous magnetic stirring, add the orthosilicate solution prepared in step 2 dropwise to the zirconium oxychloride precursor solution, and add 0.1ml polye...

Embodiment 3

[0042] (1) Configuration of the zirconium oxychloride precursor solution: Weigh a certain mass of citric acid and zirconium oxychloride for use according to the mass ratio of 2:1, and dissolve the citric acid and zirconium oxychloride in 25ml of deionized water, The zirconium oxychloride precursor solution was obtained, and stirred by magnetic force for 30 min.

[0043] (2) Configuration of ethyl orthosilicate solution: Calculate the required amount of ethyl orthosilicate according to the molar ratio of zirconium oxychloride and ethyl orthosilicate as 1:3, and measure them respectively according to the volume ratio of 1:2 A certain volume of tetraethyl orthosilicate and absolute ethanol were mixed evenly, and magnetically stirred for 30 minutes.

[0044] (3) Configuration of the silicon-zirconium precursor solution: under continuous magnetic stirring, add the orthosilicate solution prepared in step 2 dropwise to the zirconium oxychloride precursor solution, and add 0.1ml polye...

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Abstract

The invention discloses an SiO2 / ZrO2 composite visible-light-driven photocatalyst and a preparation method thereof, and relates to a visible-light-driven photocatalyst and a preparation method thereof. The problems, including low adsorption efficiency and low catalytic activity of the visible-light-driven photocatalyst to dye contaminants and complexity of existing preparation methods, can be solved. The preparation method includes (1), preparing citric acid, zirconium oxychloride and deionized water into a zirconium oxychloride precursor solution, preparing an ethyl alcohol solvent into a tetraethoxysilane ethanol solution, and evenly mixing the zirconium oxychloride precursor solution with the tetraethoxysilane ethanol solution to obtain silicon-zirconium precursor solution; (2), dryingthe silicon-zirconium precursor solution, and performing high-temperature calcination to obtain the SiO2 / ZrO2 composite visible-light-driven photocatalyst.

Description

technical field [0001] The invention belongs to the technical field of preparation of photocatalysts, in particular to a SiO 2 / ZrO 2 Composite visible light catalyst and preparation method thereof. Background technique [0002] Environmental issues and energy issues are the greatest challenges facing mankind. Photocatalytic technology is a new technology that can effectively utilize solar energy and convert low-density solar energy into high-density chemical energy. Photocatalytic technology can not only convert solar energy into new energy sources such as hydrogen energy and organic dyes, but also convert organic pollutants in the environment into carbon dioxide and water that are good for the environment without secondary pollution, thereby solving the problem of environmental pollution. As a means to effectively solve the energy shortage and environmental pollution in the future society, photocatalytic technology has become the research focus of scientists from all ov...

Claims

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Application Information

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IPC IPC(8): B01J21/08B01J20/10B01J20/30
CPCB01J20/06B01J20/103B01J21/08B01J35/39
Inventor 刘长青李旭张露月冯路路伍媛婷
Owner SHAANXI UNIV OF SCI & TECH
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