Nano-composite catalyst TiO2-gamma-AlOOH and preparation method as well as application thereof

A nano-composite and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low utilization of sunlight, toxic intermediate products, slow degradation rate, etc., and achieve simple operation. , low cost, the effect of reducing the processing cost

Inactive Publication Date: 2013-02-13
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Purpose of the present invention in order to solve photocatalyst TiO 2 The photocatalytic degradation of wastewater pollutants such as methyl orange has a slow degradation rate, only responds to ultraviolet light, low utilization rate of sunlight, and intermediate products are toxic and harmful. Therefore, a nanocomposite catalyst TiO is provided. 2 -γ-AlOOH

Method used

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  • Nano-composite catalyst TiO2-gamma-AlOOH and preparation method as well as application thereof

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Embodiment 1

[0031] A nanocomposite catalyst TiO 2 -γ-AlOOH, that is, using γ-AlOOH as a carrier to support TiO 2 The nanocomposite catalyst made of TiO 2 The loading amount is according to its mass ratio relative to the γ-AlOOH carrier, that is, TiO 2 : γ-AlOOH carrier is 10:100.

[0032] Above-mentioned a kind of nanocomposite catalyst TiO 2 - the preparation method of γ-AlOOH, its preparation process is as figure 1 As shown, first add commercial titanium dioxide, that is, P25, into absolute ethanol, stir and mix evenly to obtain a mixed solution a, add aluminum sec-butoxide to the mixed solution a, heat and stir, and add a small amount of deionized water to form a gel that is mixed Liquid b, the obtained mixed liquid b is aged to obtain mixed liquid c, the obtained mixed liquid C is subjected to suction filtration, and the filter cake obtained is washed with acetone to obtain TiO 2 / AlOOH, further drying to obtain the nanocomposite catalyst TiO 2 -γ-AlOOH, specifically comprising ...

Embodiment 2

[0038] A nanocomposite catalyst TiO 2 -γ-AlOOH, that is, using γ-AlOOH as a carrier to support TiO 2 The nanocomposite catalyst made of TiO 2 The loading amount is according to its mass ratio relative to the γ-AlOOH carrier, that is, TiO 2 : γ-AlOOH carrier is 30:100.

[0039] Above-mentioned a kind of nanocomposite catalyst TiO 2 -The preparation method of γ-AlOOH specifically comprises the following steps:

[0040] (1) Weigh 0.6g of P25 and add it into 8g of absolute ethanol, stir and mix evenly to obtain the mixture a;

[0041] (2) Weigh 5.65g of aluminum sec-butoxide and add it to the mixture a prepared in step (1), heat to 150°C and stir for 3 hours, add 2.5ml of deionized water to obtain the gel mixture b;

[0042] (3), age the gel mixture b obtained in step (2) for 3 hours, filter with suction, and rinse the obtained filter cake with acetone 5 times to obtain TiO 2 / AlOOH;

[0043] (4), finally the TiO obtained in step (3) 2 / AlOOH is placed in a blast drying ov...

Embodiment 3

[0045] A nanocomposite catalyst TiO 2 -γ-AlOOH, that is, using γ-AlOOH as a carrier to support TiO 2 The nanocomposite catalyst made of TiO 2 The loading amount is according to its mass ratio relative to the γ-AlOOH carrier, that is, TiO 2 : γ-AlOOH carrier is 40:100.

[0046] Above-mentioned a kind of nanocomposite catalyst TiO 2 -The preparation method of γ-AlOOH specifically comprises the following steps:

[0047] (1) Add 0.35g of P25 into 3.6g of absolute ethanol, stir and mix evenly to obtain a mixture a;

[0048] (2) Add 2.126g of aluminum sec-butoxide to the mixture a obtained in step (1), heat to 160°C and stir for 2 hours, then add 1.3ml of deionized water to obtain the gel mixture b;

[0049] (3), aging the gel mixture b obtained in step (2) for 3 hours, suction filtering, and rinsing the obtained filter cake with acetone 5 times to obtain TiO 2 / AlOOH ;

[0050] (4), finally the TiO obtained in step (3) 2 / AlOOH is placed in a blast drying oven at a cont...

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Abstract

The invention discloses a nano-composite catalyst TiO2-gamma-AlOOH, i.e., a nano-composite catalyst which is formed by loading TiO2 on gamma-AlOOH serving as a carrier, wherein the loading capacity of the TiO2 is (10-40):100 according to the mass ratio of the TiO2 to the gamma-AlOOH carrier, i.e., TiO2:gamma-AlOOH carrier. The nano-composite catalyst TiO2-gamma-AlOOH is prepared through a one-step synthesis method, i.e., the TiO2 is added into absolute ethanol, then aluminum tri-sec-butoxide is added, and heating, stirring, aging, vacuum filtration, acetone washing and drying are performed to obtain the nano-composite catalyst TiO2-gamma-AlOOH. The obtained nano-composite catalyst TiO2-gamma-AlOOH has the advantages of strong adsorption and photo-catalysis, good response to ultraviolet light, stable performance, capability of effectively treating pollutant methyl orange in wastewater and the like.

Description

technical field [0001] The invention relates to a nanocomposite catalyst TiO 2 -γ-AlOOH and its preparation method and its application in the treatment of pollutant methyl orange in wastewater treatment. [0002] Source topics [0003] Supported by Shanghai Municipal Education Commission Scientific Research Innovation Project (11YZ113), Shanghai Special Fund for Selecting and Cultivating Outstanding Young Teachers in Universities (slg10014). Background technique [0004] 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 amount of organic pollutants, and has deep color, large pH v...

Claims

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Application Information

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IPC IPC(8): B01J21/06C02F1/30C02F1/28C02F101/38
CPCY02W10/37
Inventor 常飞张敏王刚张健谢运超
Owner UNIV OF SHANGHAI FOR SCI & TECH
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