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Cu2O-TiO2 composite photocatalyst as well as preparation method and application thereof

A catalyst and composite light technology, applied in the field of photocatalytic materials, to achieve the effects of improved photocatalytic performance, low cost and good reproducibility

Active Publication Date: 2021-07-30
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, hollow nanospheres supported on Cu nanosheets 2 O-TiO 2 Composite materials, so far unreported

Method used

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  • Cu2O-TiO2 composite photocatalyst as well as preparation method and application thereof
  • Cu2O-TiO2 composite photocatalyst as well as preparation method and application thereof
  • Cu2O-TiO2 composite photocatalyst as well as preparation method and application thereof

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Embodiment 1

[0024] a Cu 2 O-TiO 2 Composite photocatalyst, described composite photocatalyst is made of Cu 2 O nanospheres and TiO 2 The nanosheets consist of a mass ratio of 1:2.8, the Cu 2 O nanospheres are nanospheres with a hollow structure, and the nanospheres with a hollow structure are evenly loaded on the TiO 2 on the nanosheet.

[0025] a Cu 2 O-TiO 2 The preparation method of composite photocatalyst, concrete steps are as follows:

[0026] (1) At room temperature, in a beaker, add 3.15g of water, 30.03g of glacial acetic acid and 0.5g of 40wt% hydrofluoric acid, stir evenly, then add 1.7g of tetrabutyl titanate (TBOT), and stir for 30min.

[0027] (2) Transfer the obtained mixed solution to a polytetrafluoroethylene lining, and conduct a hydrothermal reaction at a constant temperature of 180°C for 24 hours. After 24 hours of reaction, naturally cool to room temperature, centrifugally wash and dry, and the product is TiO 2 .

[0028] (3) Put 0.08g of the product into a b...

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Abstract

The invention discloses a Cu2O-TiO2 composite photocatalyst as well as a preparation method and application thereof. The composite photocatalyst is composed of Cu2O nanospheres and TiO2 nanosheets according to the mass ratio of 1: 2.8, and Cu2O is the nanospheres of a hollow structure and is evenly loaded on the TiO2 nanosheets. The Cu2O of the hollow structure has the advantages of more active sites, high light absorption capability, facilitation of reaction molecule diffusion and the like; the TiO2 nanosheets have the advantages of high oxidation capacity, large specific surface and the like. The advantages of the Cu2O and the TiO2 nanosheets are synergistically enhanced, so that the photocatalytic performance of the Cu2O-TiO2 composite photocatalyst is greatly improved. Compared with performance of the TiO2, the activity of the catalyst is improved by 1.64 times. The Cu2O-TiO2 composite photocatalyst can well degrade a methyl orange (MO) wastewater solution under ultraviolet light; and the Cu2O-TiO2 composite photocatalyst is simple in preparation method, low in cost, good in reproducibility and unique in structure, so that the Cu2O-TiO2 composite photocatalyst has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials, in particular to a Cu 2 O-TiO 2 Composite photocatalyst and its preparation method and application. Background technique [0002] With the development of the economy and the progress of the society, the problem of environmental pollution is getting worse day by day. At present, water pollution, one of the top ten environmental problems in the world, has attracted more and more attention. Water pollutants are mainly organic pollutants, pathogenic pollutants and toxic pollutants. People have adopted a variety of methods to treat wastewater, mainly including physical methods, chemical methods and biological methods. Compared with other methods, photocatalysis utilizes abundant solar energy and can completely decompose toxic organic pollutants without producing secondary pollution. This technology does not consume fossil resources, and has the advantages of simple operation and l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J21/06B01J35/10B01J37/16C02F1/32C02F101/30C02F101/34C02F101/38
CPCB01J23/72B01J21/063B01J37/16C02F1/32C02F2101/30C02F2101/34C02F2101/38C02F2101/40C02F2101/308C02F2305/10B01J35/23B01J35/61B01J35/39Y02W10/37
Inventor 滕飞王丹张家威刘喆马奔滕怡然梁淑予
Owner NANJING UNIV OF INFORMATION SCI & TECH
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