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Calabash string-shaped CuO/CNT composite catalyst and preparation method thereof

A composite catalyst, gourd technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve complex preparation, prone to agglomeration or deformation, synthesis cycle To solve the problems of long time, to achieve the effect of simple preparation method, promote electron transfer, and increase conductivity

Active Publication Date: 2022-07-22
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation of existing copper-based composite catalysts based on CNT is relatively complicated, the synthesis cycle is long, and it is prone to agglomeration or deformation.

Method used

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  • Calabash string-shaped CuO/CNT composite catalyst and preparation method thereof
  • Calabash string-shaped CuO/CNT composite catalyst and preparation method thereof
  • Calabash string-shaped CuO/CNT composite catalyst and preparation method thereof

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Embodiment 1

[0025] The preparation method of the cucurbit string CuO / CNT composite catalyst of the present invention specifically comprises the following steps:

[0026] (1) Take 0.5g of CNT and place it in 60mL of a mixed solution of concentrated nitric acid and concentrated sulfuric acid (1:3, v / v), heat at 120°C for 3 hours, and filter the resulting solution with a cellulose membrane filter (pore size 0.25 μm) filter, wash until the pH of the eluate is 6-7, then centrifuge and dry to obtain activated CNT powder, and the obtained powder is dispersed in 1 mL of deionized water; in the CNT dispersion, the mass fraction of CNTs is 50%;

[0027] (2) Dissolve 0.2 mol of cuprous chloride in an aqueous solution of 10 mL of ethanol to obtain solution A; dissolve 0.05 g of surfactant P123 in 5 mL of ethanol to obtain solution B; at room temperature, the ratio by volume is 1:2 Mix solution A and solution B to obtain a mixed solution;

[0028] (3) Add 0.45 mL of ammonia water (25% to 28% by mass)...

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Abstract

The invention discloses a calabash-string-shaped copper oxide (CuO) / carbon nanotube (CNT) composite catalyst which is composed of CNT and CuO particles grown in situ, and a plurality of CuO particles grown on the CNT in situ are connected to form a calabash string shape. The invention also discloses a preparation method of the cucurbit string-shaped CuO / CNT composite catalyst, which comprises the following steps: (1) activating CNT to obtain a CNT dispersion liquid with certain oxygen-containing groups; (2) dissolving cuprous chloride in an aqueous solution of ethanol to obtain a solution A, dissolving P123 in ethanol to obtain a solution B, and mixing the solution A and the solution B at room temperature to obtain a mixed solution; and (3) respectively adding the CNT turbid solution in the step (1) and ammonia water into the mixed solution in the step (2), and observing that blue Cu (OH) 2 precipitate is generated. Then, transferring the mixed solution into a single-mode microwave reactor, and setting a reaction temperature for reaction; and (4) centrifugally washing and drying the obtained black precipitate to obtain the gourd string-shaped CuO / CNT composite catalyst.

Description

technical field [0001] The invention relates to a composite catalytic material based on the modification of CNTs by CuO, and also relates to a preparation method of the above composite catalytic material. Background technique [0002] Advanced Oxidation Processes (AOPs) has become one of the important means to effectively remove low-concentration organic pollutants in chemical oxidation water treatment technology because of its fast removal rate and low pollution. The method produces reactive oxygen species, including: sulfate radicals (SO 4 ·- ),Hydroxyl radicals( · OH), singlet oxygen ( 1 O 2 ), etc., can decompose organic pollutants into low-toxic or non-toxic intermediate products, or directly mineralize into CO 2 and H 2 O. The traditional Fenton method is based on the generation of hydroxyl radicals ( · OH) is the active medium for the oxidative degradation of organic pollutants. because · The characteristics of OH's short life cycle (<1 microsecond) and n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J27/24B01J35/02C02F1/72C02F101/38
CPCB01J23/72B01J27/24C02F1/725C02F2101/38B01J35/50
Inventor 张武翔李子涵史明月徐放杨诗琦
Owner JIANGSU UNIV OF SCI & TECH
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