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Nanocomposite for photocatalystis as well as preparation method and application of nanocomposite

A nanocomposite material, nanocomposite technology, applied in the fields of nanotechnology for materials and surface science, catalyst activation/preparation, chemical instruments and methods, etc., can solve the problems of weak photocatalytic activity of catalysts, and the problem of TiO2 recycling is not solved. , to achieve the effect of improving catalytic efficiency and stability, less impurities and good dispersibility

Active Publication Date: 2019-07-23
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst obtained by the above method improves the TiO 2 adsorption capacity, but the photocatalytic activity of the catalyst in the visible light region is weak, and there is no solution to the problem of TiO 2 recycling issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Preparation of nanocomposites:

[0042] 1) SnCl 4 Mix with acetone according to the mass volume ratio of 1:1g / mL, and stir for 10min to obtain solution A; mix butyl titanate and absolute ethanol according to the mass volume ratio of 1:1g / mL, and stir for 15min to obtain solution B; B The two solutions are mixed evenly by electromagnetic stirring so that the SnCl 4 The molar ratio of butyl titanate to butyl titanate is 1:4, placed in a closed reaction kettle, heated at 130°C for 15h, after the reaction is complete, the resulting solution is filtered and dried, placed in a muffle furnace for calcination at 400°C for 4h, and cooled Get TiO 2 / SnO 2 nanocomposite semiconductors;

[0043] 2) with the TiO obtained in step 1) 2 / SnO 2 Nanocomposite semiconductors, multi-walled carbon nanotubes, and 8M NaOH solution are mixed according to the mass volume ratio of 1:10:40g / (g·mL), and the TiO 2 / SnO 2 The nanocomposite semiconductor was added to the NaOH solution and sti...

Embodiment 2

[0049] Same as the photocatalytic activity detection process of the nanocomposite in Example 1, the preparation process of the nanocomposite is as follows:

[0050] 1) SnCl 4 Mix with acetone according to the mass volume ratio of 1:6g / mL, and stir for 20min to obtain solution A; mix butyl titanate and absolute ethanol according to the mass volume ratio of 1:3g / mL, and stir for 30min to obtain solution B; B The two solutions are mixed evenly by electromagnetic stirring so that the SnCl 4 The molar ratio of butyl titanate to butyl titanate is 1:10, placed in a closed reaction kettle, heated at 300°C for 6h, after the reaction is complete, the resulting solution is filtered and dried, placed in a muffle furnace for calcination at 700°C for 2h, and cooled Get TiO 2 / SnO 2 nanocomposite semiconductors;

[0051] 2) with the TiO obtained in step 1) 2 / SnO 2 Nanocomposite semiconductors, multi-walled carbon nanotubes, and 10M NaOH solution are mixed according to the mass volume ...

Embodiment 3

[0055] Same as the photocatalytic activity detection process of the nanocomposite in Example 1, the preparation process of the nanocomposite is as follows:

[0056] 1) SnCl 4 Mix with acetone according to the mass volume ratio of 1:2g / mL, and stir for 15min to obtain solution A; mix butyl titanate and absolute ethanol according to the mass volume ratio of 1:1g / mL, and stir for 20min to obtain solution B; B The two solutions are mixed evenly by electromagnetic stirring so that the SnCl 4 The molar ratio of butyl titanate to butyl titanate is 1:6, placed in a closed reaction kettle, heated at 180°C for 10h, after the reaction is complete, the resulting solution is filtered and dried, placed in a muffle furnace and calcined at 500°C for 3h, cooled Get TiO 2 / SnO 2 nanocomposite semiconductors;

[0057] 2) with the TiO obtained in step 1) 2 / SnO 2 Nanocomposite semiconductors, multi-walled carbon nanotubes, and 10M NaOH solution are mixed according to the mass volume ratio o...

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Abstract

The invention relates to the field of photocatalysis, in particular to a nanocomposite for photocatalystis as well as a preparation method and an application of the nanocomposite. The nanocomposite isprepared from TiO2, SnO2 and multiwalled carbon nanotubes through composition, wherein TiO2 and SnO2 are supported on the multiwalled carbon nanotubes. The nanocomposite is sprayed to the surface ofpolypropylene fiber fabric, and the sprayed polypropylene fiber fabric makes contact with water, thereby treating pollutants in water. The prepared nanocomposite has the advantages of high catalysis efficiency, high stability, easiness in recovery and avoidance of secondary pollution.

Description

technical field [0001] The invention relates to the field of photocatalysis, in particular to a nanocomposite material used for photocatalysis and its preparation method and application. Background technique [0002] With the rapid development of social economy and the continuous acceleration of urbanization, the discharge of urban sewage and pollutants has increased significantly, and urban water bodies have long been the main gathering place for industrial wastewater and domestic sewage. With the deepening of organic pollution As a result, the degree of eutrophication in the water body is intensified. When the pollution concentration exceeds the self-purification ability of the water body, the water body will become smelly and black, forming black and smelly water, which will completely lose its use function and affect the landscape and human life and health. [0003] At present, there are various technologies for urban water environment governance, each of which has its o...

Claims

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Application Information

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IPC IPC(8): B01J23/14B01J37/10B01J37/02B01J31/38B82Y30/00B82Y40/00C02F1/30C02F101/30C02F101/34C02F101/38
CPCB01J23/14B01J37/10B01J37/0215B01J31/38B82Y30/00B82Y40/00C02F1/30C02F2101/40C02F2101/38C02F2101/34C02F2101/308C02F2305/10B01J35/39
Inventor 汤智赵天慧赵晓丽吴丰昌方梦园
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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