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Fullerene carboxylic derivative modified photocatalyst/super-hydrophobic membrane composite material

A fullerene carboxyl and photocatalyst technology, applied in the field of photocatalysis, can solve the problems of reducing the probability of electron-hole recombination, speeding up the diffusion of oxygen, increasing the amount of oxygen, etc., to increase the light absorption range, prolong the separation time, The effect of improving conveying efficiency

Active Publication Date: 2018-07-31
INST OF CHEM CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem of fast electron-hole recombination in existing photocatalytic materials, the problem of low oxygen content and slow diffusion as a photogenerated electron acceptor in the photocatalytic reaction process, the purpose of the present invention is to provide a fullerene carboxyl derivative modified Photocatalyst / superhydrophobic membrane composite material and its application. The composite material has a novel structure and excellent performance. When used as a photocatalyst, it can speed up the diffusion of oxygen and increase the amount of oxygen, so that there is enough oxygen in the photocatalytic reaction system to capture And use photogenerated electrons to reduce the probability of electron-hole recombination

Method used

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Examples

Experimental program
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Effect test

Embodiment 1C60

[0058] Example 1C 60 (C(COOH) 2 ) 3 Modified granular Bi 2 WO 6 / superhydrophobic carbon film composite and C 60 (C(COOH) 2 ) 3 Modified flaky Bi 2 WO 6 / Preparation of superhydrophobic carbon film composites

[0059] (1)C 60 (C(COOH) 2 ) 3 Modified granular Bi 2 WO 6 and C 60 (C(COOH) 2 ) 3 Modified flaky Bi 2 WO 6 Preparation of:

[0060] C 60 (C(COOH) 2 ) 3 Modified granular Bi 2 WO 6 Preparation: Add 0.8mmol bismuth nitrate pentahydrate and 0.4mmol sodium tungstate dihydrate to 20ml ethylene glycol to form a homogeneous mixture A, add 0.004mmol C 60 (C(COOH) 2 ) 3 Add to 20ml of ethylene glycol, ultrasonically dissolve to form solution B, then add solution B to the above mixed solution A to form mixed solution C, after stirring for 1 hour, put mixed solution C into a 100ml reaction kettle and keep warm at 160°C 15h, after the reaction, the temperature was lowered to obtain 60 (C(COOH) 2 ) 3 Modified granular Bi 2 WO 6 solution, the solution...

Embodiment 2C60

[0072] Example 2C 60 (C(COOH) 2 ) 3 Modified granular Bi 2 WO 6 / superhydrophobic carbon film composite and C 60 (C(COOH) 2 ) 3 Modified flaky Bi 2 WO 6 / Superhydrophobic carbon film composites are used as photocatalysts

Embodiment 1

[0073] The two composite materials prepared in Example 1 have excellent photocatalytic properties for the degradation of rhodamine B, methyl orange, tetracycline hydrochloride and other organic pollutants, and can achieve more than 90% degradation within 2 hours. The photocatalytic degradation of rhodamine B, methyl orange and tetracycline hydrochloride is shown below in conjunction with the accompanying drawings. 60 (C(COOH) 2 ) 3 Modified granular Bi 2 WO 6 / superhydrophobic carbon film composite and C 60 (C(COOH) 2 ) 3 Modified flaky Bi 2 WO 6 / Effect of superhydrophobic carbon film composites on degradation of organic pollutants.

[0074] The experimental procedure is as follows: take 2.5ml of water samples containing organic pollutants and put them into a cuvette, and the C prepared in Example 1 60 (C(COOH) 2 ) 3 Modified granular Bi 2 WO 6 / Composite material of superhydrophobic carbon film 1 piece or C 60 (C(COOH) 2 ) 3 Modified flaky Bi 2 WO 6 1 she...

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Abstract

The embodiment of the invention relates to a fullerene carboxylic derivative modified photocatalyst / super-hydrophobic membrane composite material. The fullerene carboxylic derivative modified photocatalyst / super-hydrophobic membrane composite material comprises a super-hydrophobic membrane, the surface of the super-hydrophobic membrane is covered with a fullerene carboxylic derivative modified photocatalyst, the fullerene carboxylic derivative modified photocatalyst is prepared from at least one of a photocatalyst and a photocatalyst precursor and fullerene carboxylic derivatives. The composite material is novel in structure, excellent in performance and low in electron-hole recombination probability when adopted as the photocatalyst.

Description

technical field [0001] The invention relates to the field of photocatalysis, and further relates to a photocatalyst / superhydrophobic membrane composite material modified by a fullerene carboxyl derivative and an application thereof. Background technique [0002] Semiconductor photocatalysis technology has become a green environmental pollution control technology due to its characteristics of low energy consumption, low cost, no secondary pollution, low temperature deep reaction, thorough purification, and direct use of solar energy as a light source to drive the reaction. [0003] In recent years, the combination of photocatalytic materials and carbon-based materials has attracted great attention from scientists. Existing composite materials formed by photocatalytic materials and carbon materials can improve the rate of photocatalytic reaction to a certain extent, but there are still the following problems: photogenerated electrons and holes are easily recombined inside and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/31B01J35/02C02F1/30C02F101/30B01J35/00
CPCC02F1/30B01J23/31C02F2101/308B01J35/00B01J35/30B01J35/39
Inventor 王春儒吴波刘丽萍
Owner INST OF CHEM CHINESE ACAD OF SCI
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