ZnIn2S4 nano-sheet coated beta-Bi2O3 core-shell heterogeneous compound photocatalyst, as well as preparation method and application thereof

A -bi2o3, znin2s4 technology, which is applied in the preparation of inorganic photocatalytic nanocomposite materials and the treatment of environmental water pollution, and achieves the effects of mild reaction conditions, simple operation and abundant sources

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  • Abstract
  • Description
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Problems solved by technology

So far, about ZnIn 2 S 4 / β-Bi 2 o 3 The preparation of nanocomposite photocatalyst and its use for visible light catalytic degradation of tetracycline hydrochloride and methyl orange have not been reported at home and abroad

Method used

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  • ZnIn2S4 nano-sheet coated beta-Bi2O3 core-shell heterogeneous compound photocatalyst, as well as preparation method and application thereof
  • ZnIn2S4 nano-sheet coated beta-Bi2O3 core-shell heterogeneous compound photocatalyst, as well as preparation method and application thereof
  • ZnIn2S4 nano-sheet coated beta-Bi2O3 core-shell heterogeneous compound photocatalyst, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Weigh 0.1617g Bi(NO 3 ) 3 ·5H 2 O, 0.0601g of D-fructose, dissolved in 25ml of ethylene glycol solvent, stirred for 10min to obtain a mixed suspension, then transferred to a reaction kettle for constant temperature reaction, the temperature was 140°C, the time was 10h, and the reaction ended After cooling to room temperature, the resulting product was centrifuged and washed several times with deionized water and absolute ethanol, and dried in vacuum to obtain β-Bi 2 o 3 Precursor. Put it into a tube furnace, heat up at a rate of 2°C / min, and calcinate at 200°C for 0.5h. After the reaction is over, cool to room temperature to obtain β-Bi 2 o 3 monomer.

[0024] (2) Measure 10ml methanol solution respectively, add 0.025g ZnIn 2 S 4 and 0.475g β-Bi 2 o 3 , ultrasonication for 3 minutes, stirring for 5 minutes, repeated six times to obtain its dispersion. Afterwards, with stirring, the ZnIn 2 S 4 The dispersion was added dropwise to β-Bi 2 o 3 in the disp...

Embodiment 2

[0027] (1) Weigh 0.2079g Bi(NO 3 ) 3 ·5H 2 O, 0.0772g D-fructose, dissolved in 30ml of ethylene glycol solvent, stirred for 15min to obtain a mixed suspension, then transferred it to a reaction kettle, and carried out constant temperature reaction, the temperature was 160°C, the time was 12h, and the reaction ended After cooling to room temperature, the resulting product was centrifuged and washed several times with deionized water and absolute ethanol, and dried in vacuum to obtain β-Bi 2 o 3 Precursor. Put it into a tube furnace, heat up at a rate of 2°C / min, and calcinate at 250°C for 0.5h. After the reaction, cool to room temperature to obtain β-Bi 2 o 3 monomer.

[0028] (2) Measure 10ml methanol solution respectively, add 0.09g ZnIn 2 S 4 and 0.91g β-Bi 2 o 3 , sonicated for 5 minutes, stirred for 8 minutes, and repeated six times to obtain its dispersion. Afterwards, with stirring, the ZnIn 2 S 4 The dispersion was added dropwise to β-Bi 2 o 3 in the disp...

Embodiment 3

[0031] (1) Weigh 0.7276g Bi(NO 3 ) 3 ·5H 2 O, 0.2707g D-fructose, dissolved in 35ml of ethylene glycol solvent, obtained a mixed suspension by stirring for 25min, and then transferred it to a reaction kettle for constant temperature reaction, the temperature was 160°C, the time was 15h, and the reaction ended After cooling to room temperature, the resulting product was centrifuged and washed several times with deionized water and absolute ethanol, and dried in vacuum to obtain β-Bi 2 o 3 Precursor. Put it into a tube furnace, heat up at a rate of 3°C / min, and calcinate at 300°C for 1 hour. After finishing, cool to room temperature to obtain β-Bi 2 o 3 monomer.

[0032] (2) Measure 15ml methanol solution respectively, add 0.144g ZnIn 2 S 4 and 1.056 g β-Bi 2 o 3 , ultrasonication for 8 minutes, stirring for 10 minutes, repeated six times to obtain its dispersion. Afterwards, with stirring, the ZnIn 2 S 4 The dispersion was added dropwise to β-Bi 2 o 3 in the disp...

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Abstract

The invention belongs to the field of environmental water pollution abatement, and discloses a ZnIn2S4 nanosheet coated beta-Bi2O3 core-shell heterogeneous compound photocatalyst, as well as a preparation method and application thereof. According to the method, the ZnIn2S4 nanosheet coated beta-Bi2O3 core-shell heterogeneous compound photocatalyst is prepared by using ZnIn2S4 and synthetic beta-Bi2O3 monomer as raw materials through a simple self-aggregation effect. The binary ZnIn2S4/beta-Bi2O3 compound nano-photocatalyst can be applied to catalytic degradation of tetracycline hydrochloride and methyl orange under visible light, shows excellent photo-induced electron separation efficiency, and can be used for improving the visible light utilization and integral photocatalytic activity. The ZnIn2S4 nanosheet coated beta-Bi2O3 core-shell heterogeneous compound photocatalyst is prepared from nontoxic raw materials, has simple operation and mild reaction condition, accords with the concept of environment-friendly chemistry, and has a wide application prospect in the aspect of solving water environmental pollution.

Description

technical field [0001] The invention belongs to the preparation of inorganic photocatalytic nanocomposite materials and the application in the field of environmental water pollution control, and relates to ZnIn 2 S 4 Nanosheets Encapsulated β-Bi 2 o 3 Preparation method and application of core-shell heterogeneous composite photocatalyst. Background technique [0002] Today, advanced science and technology have brought fruitful results to the society, but also brought great harm. Among these harms, the pollution caused by antibiotics and dye wastewater has become one of the important factors. Plants and animals, as well as humans, have had a huge impact. Therefore, the research and development of new clean energy technologies is a key problem in alleviating water pollution. Photocatalytic degradation technology can directly use solar energy to degrade pollutants, and has the advantages of high efficiency, energy saving, and environmental protection. However, since most ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B82Y30/00B82Y40/00C02F1/30C02F101/34C02F101/38
CPCB01J27/04B01J35/004B82Y30/00B82Y40/00C02F1/30C02F2101/34C02F2101/38C02F2101/40C02F2305/10
Inventor 张申蒋银花肖艳彭志远郭子威倪林鑫张文莉
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