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Microsphere TiO2 photocatalyst and preparation method thereof

A photocatalyst and microsphere technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of TiO2 photocatalytic performance influence, easy to fall off, etc. The effect of good performance and wide application prospects

Inactive Publication Date: 2010-11-10
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it was found through experiments that supported TiO 2 TiO was simply absorbed by physical adsorption 2 Fixed on the surface of the carrier, it is easy to fall off during repeated use, and the loading process has a negative effect on TiO 2 The photocatalytic performance also has a certain influence

Method used

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  • Microsphere TiO2 photocatalyst and preparation method thereof
  • Microsphere TiO2 photocatalyst and preparation method thereof
  • Microsphere TiO2 photocatalyst and preparation method thereof

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preparation example Construction

[0030] A microsphere TiO 2 The preparation method of photocatalyst comprises the following steps

[0031] Step 1: Preparation of TiO 2 catalyst of light;

[0032] (a) Take 2100-2500ml of tetrabutyl titanate, under the stirring of a magnetic stirrer, slowly add 8600-9000ml of absolute ethanol, stir evenly, and form a mixed solution A;

[0033] (b) preparation concentration is 1500~2000ml of ethanol solution of 50%, and the nitric acid of 5mol / L is added dropwise, and the pH value of its ethanol solution is adjusted, and the mixed solution of its nitric acid and ethanol solution is acidic, has both formed mixed solution B.

[0034] (c) under stirring with a magnetic stirrer, add the mixed solution A dropwise into the mixed solution B, after the dripping is completed, continue to stir with a magnetic stirrer, stir evenly, and prepare a milky white sol;

[0035] When the mixed solution A is dropped into the mixed solution B, tetrabutyl titanate undergoes a hydrolysis reaction t...

Embodiment 1

[0047] Step 1: Preparation of TiO 2 catalyst of light;

[0048] (a) Take 2210ml of tetrabutyl titanate, under the stirring of a magnetic stirrer, slowly add 8840ml of absolute ethanol, stir evenly, and form a mixed solution A;

[0049] (b) preparation concentration is 50% ethanol solution 1560ml, and the nitric acid of 5mol / L is added dropwise, the pH value of its ethanol solution is adjusted, the mixed solution that makes its nitric acid and ethanol solution is acidic, has both formed mixed solution B.

[0050] (c) under stirring with a magnetic stirrer, add the mixed solution A dropwise into the mixed solution B, after the dripping is completed, continue to stir with a magnetic stirrer, stir evenly, and prepare a milky white sol;

[0051] (d) Dry the milky white sol, and grind the dried milky white sol to become a powdery milky white powder with a particle size of 13-16nm; transfer the powdery milky white powder to a muffle furnace, and gradually heat up To 500°C, heat pre...

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Abstract

The invention discloses a microsphere TiO2 photocatalyst and a preparation method thereof. The microsphere TiO2 photocatalyst exists in the form of microspheres, the diameter of the microspheres is 60 to 150 mu m, and the apparent bulk density is 0.785 to 0.845 kg / m<3>; the microsphere TiO2 photocatalyst consists of nano-scale TiO2 crystal grains, and the TiO2 crystal grains exist in an anatase type crystal form; the microsphere TiO2 photocatalyst has high heat stability, can be used for degrading oil field produced water to ensure that the degraded oil field produced water reaches a nationaldischarge standard; and the microsphere TiO2 photocatalyst has extensive application prospects in the technical fields of treating wastewater such as domestic wastewater, factory processing wastewater and the like.

Description

technical field [0001] The invention belongs to the technical field of photocatalyst preparation, in particular to a microsphere TiO 2 Photocatalyst and its preparation method. Background technique [0002] With the acceleration of my country's oilfield development process, more and more water is produced in oilfields, and the domestic oil exploitation level continues to increase, making oilfields enter a period of high water-cut exploitation one after another. If the oilfield produced water is directly discharged without treatment, it will cause soil and water pollution and seriously affect the ecological environment. Therefore, the technical research of oilfield produced water treatment has attracted people's attention day by day. At present, the more promising oilfield produced water treatment process recognized at home and abroad is TiO 2 Photocatalytic oxidation technology. [0003] TiO 2 The research on the application of photocatalytic oxidation technology to wat...

Claims

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Application Information

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IPC IPC(8): B01J21/06C02F1/30
Inventor 刘宏菊王新蕾罗威
Owner BEIHANG UNIV
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