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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  • 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

Method used

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

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Experimental program
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Example Embodiment

[0030] Example1

[0031] A kind of nano composite catalyst TiO 2 -γ-AlOOH, which uses γ-AlOOH as a carrier and supports TiO 2 Nano composite catalyst, TiO 2 The loading amount is based on its mass ratio relative to the γ-AlOOH carrier, that is, TiO 2 : Γ-AlOOH carrier is 10:100.

[0032] The above-mentioned nanocomposite catalyst TiO 2 -γ-AlOOH preparation method, its preparation process is as follows figure 1 As shown, first add commercial titanium dioxide, namely P25, to absolute ethanol, stir and mix to obtain mixed solution a, add aluminum sec-butoxide to mixed solution a, heat, stir, and add a small amount of deionized water to form a gel. Liquid b, mixed liquid c is obtained after the obtained mixed liquid b is aged, and the obtained mixed liquid C is suction filtered and the filter cake is washed with acetone to obtain TiO 2 / AlOOH, further drying to obtain nano composite catalyst TiO 2 -γ-AlOOH, specifically including the following steps:

[0033] (1) Weigh 0.3g of P25 and ...

Example Embodiment

[0037] Example2

[0038] A kind of nano composite catalyst TiO 2 -γ-AlOOH, which uses γ-AlOOH as a carrier and supports TiO 2 Nano composite catalyst, TiO 2 The loading amount is based on its mass ratio relative to the γ-AlOOH carrier, that is, TiO 2 : Γ-AlOOH carrier is 30:100.

[0039] TiO 2 The preparation method of -γ-AlOOH specifically includes the following steps:

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

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

[0042] (3) The gel mixture b obtained in step (2) is aged for 3 hours, filtered with suction, and the obtained filter cake is washed 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 oven at 120°C for 2h to obtain the nanocompo...

Example Embodiment

[0044] Example3

[0045] A kind of nano composite catalyst TiO 2 -γ-AlOOH, which uses γ-AlOOH as a carrier and supports TiO 2 Nano composite catalyst, TiO 2 The loading amount is based on its mass ratio relative to the γ-AlOOH carrier, that is, TiO 2 : Γ-AlOOH carrier is 40:100.

[0046] TiO 2 The preparation method of -γ-AlOOH specifically includes the following steps:

[0047] (1) Add 0.35g of P25 to 3.6g of absolute ethanol and stir and mix to obtain a mixed solution a;

[0048] (2), 2.l26g aluminum sec-butoxide was added to the mixture a obtained in step (1), heated to a temperature of 160 ℃ and stirred for 2h, and then 1.3ml of deionized water was added to obtain a gel mixture b;

[0049] (3) The gel mixture b obtained in step (2) was aged for 3 hours, filtered with suction, and the obtained filter cake was washed with acetone 5 times to obtain TiO 2 / AlOOH ;

[0050] (4) Finally, the TiO obtained in step (3) 2 / AlOOH is put into a blast drying box and dried for 2h at a control...

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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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