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Preparation method of nano-composite catalyst titanium dioxide pseudo-boehmite

A pseudo-boehmite and titanium dioxide technology, applied in the field of materials, can solve the problems of low adsorption capacity, low photocatalytic efficiency, and restrictions on the industrialization of photocatalysts, and achieve the effect of high specific surface area and large pore volume

Inactive Publication Date: 2013-12-04
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it also has its own limitations, such as TiO 2 Low adsorption capacity leads to low photocatalytic efficiency; band gap, only responds to ultraviolet light, and low utilization rate of sunlight
Therefore, for TiO 2 More and more attention has been paid to the modification. Due to the shortcomings of the suspension phase photocatalytic system, such as difficult recovery and easy aggregation, the TiO 2 The industrialization of photocatalysts, so the preparation of highly active supported TiO 2 Photocatalyst has become a hotspot of increasing attention

Method used

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  • Preparation method of nano-composite catalyst titanium dioxide pseudo-boehmite
  • Preparation method of nano-composite catalyst titanium dioxide pseudo-boehmite

Examples

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Effect test

Embodiment 1

[0049] A preparation method of nanocomposite catalyst titanium dioxide pseudo-boehmite, comprising the following steps:

[0050] a. Weigh 0.3g of TiO 2 (P25) Add 8g of absolute ethanol;

[0051] b. Then add 10.9g of aluminum sec-butoxide and stir to make a mixed solution I;

[0052] c. heating and stirring the mixed solution I prepared in step b at a temperature of 150° C. for 3 hours to prepare mixed solution II, which is in the form of a gel;

[0053] d. Measure 3ml of deionized water, add it to the mixed solution II prepared in step c, and age for 3 hours to make mixed solution III;

[0054] e. Suction filter the mixed solution III prepared in step d with a suction filter to make mixed solution IV;

[0055] f. Rinse the mixed solution IV prepared in step e with acetone several times to obtain a sample;

[0056] g. Put the sample prepared in step f into a blast drying oven at 120° C. and dry for 2 hours to obtain the nanocomposite titanium dioxide pseudo-boehmite (Titani...

Embodiment 2

[0059] A preparation method of nanocomposite catalyst titanium dioxide pseudo-boehmite, comprising the following steps:

[0060] a. Weigh 0.6g of TiO 2 (P25) Add 8g of absolute ethanol;

[0061] b. Then add 5.65g of aluminum sec-butoxide and stir to make a mixed solution I;

[0062] c. heating and stirring the mixed solution I prepared in step b at a temperature of 160° C. for 3 hours to prepare mixed solution II, which is in the form of a gel;

[0063] d. Measure 2.5ml of deionized water, add it to the mixed solution II prepared in step c, and age for 3 hours to make mixed solution III;

[0064] e. Suction filter the mixed solution III prepared in step d with a suction filter to make mixed solution IV;

[0065] f. Rinse the mixed solution IV prepared in step e with acetone several times to obtain a sample;

[0066] g. Put the sample prepared in step f into a blast drying oven at 120° C. and dry for 2 hours to obtain the nanocomposite titanium dioxide pseudo-boehmite (Tita...

Embodiment 3

[0069] A preparation method of nanocomposite catalyst titanium dioxide pseudo-boehmite, comprising the following steps:

[0070] a. Weigh 0.35g of TiO 2 (P25) Add 3.6g of absolute ethanol;

[0071] b. Then add 2.126g of aluminum sec-butoxide and stir to make a mixed solution I;

[0072] c. heating and stirring the mixed solution I prepared in step b at a temperature of 140° C. for 3 hours to prepare mixed solution II, which is in the form of a gel;

[0073] d. Measure 1.3ml of deionized water, add it to the mixed solution II prepared in step c, and age for 3 hours to make mixed solution III;

[0074] e. Suction filter the mixed solution III prepared in step d with a suction filter to make mixed solution IV;

[0075] f. Rinse the mixed solution IV prepared in step e with acetone several times to obtain a sample;

[0076] g. Put the sample prepared in step f into a blast drying oven at 120° C. and dry for 2 hours to obtain the nanocomposite titanium dioxide pseudo-boehmite (...

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Abstract

The invention discloses a preparation method of a nano-composite catalyst titanium dioxide pseudo-boehmite. The preparation method comprises the following steps of a, adding TiO2 into anhydrous ethanol, b, adding aluminum tri-sec-butoxide into the solution and carrying out stirring to obtain a mixed solution I, c, carrying out heating stirring to obtain a mixed solution II in a gel form, d, adding deionized water into the mixed solution II, and carrying out aging to obtain a mixed solution III, e, carrying out pumping filtration of the mixed solution III by a pumping filtration device to obtain a mixed solution IV, f, flushing the mixed solution IV by acetone several times to obtain a sample, and g, drying the sample to obtain the nano-composite catalyst titanium dioxide pseudo-boehmite. The preparation method utilizes gamma-AlOOH as a carrier, modified TiO2 as a catalyst and aluminum tri-sec-butoxide as an aluminum source to prepare the nano-composite catalyst titanium dioxide pseudo-boehmite by a one-step method. The nano-composite catalyst titanium dioxide pseudo-boehmite has strong adsorption and photocatalysis performances, good response to ultraviolet light and stable performances and can effectively treat water pollutants such as methyl orange.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a preparation method of a nano-composite catalyst titanium dioxide pseudo-boehmite (Titania-γ-AlOOH). The nano-composite material is used to treat pollutant methyl orange in wastewater. Background technique [0002] In recent years, with the development of the economy, the global environmental pollution has become more and more serious. Various pollutions, such as water pollution, air pollution, solid waste pollution, etc., especially water pollution, have seriously threatened human health and caused people's concern. highly valued. Especially dye wastewater, printing and dyeing wastewater has complex and drastic changes in water quality, contains a large number of organic pollutants, and has deep color, large pH value changes, and poor biochemical properties. In addition to a large amount of slurry and additives, wastewater also contains various toxic pollutants, such as anilin...

Claims

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Application Information

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IPC IPC(8): B01J21/06C02F1/30C02F1/32C02F1/58C02F1/28
CPCY02W10/37
Inventor 常飞张敏王刚张健谢运超周艳芬
Owner UNIV OF SHANGHAI FOR SCI & TECH
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