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Piezoelectric catalysis and photocatalysis combined catalyst of graphene oxide doped modified bismuth tetroxide as well as preparation method and application thereof

A bismuth tetroxide and catalyst technology, which is applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of low utilization rate of sunlight by photocatalysts , to achieve the effect of convenient synthesis, environmental friendliness and stable performance

Active Publication Date: 2020-12-25
南京智汇环境气象产业研究院有限公司 +1
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Problems solved by technology

However, many photocatalysts have a relatively low utilization rate of sunlight.

Method used

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  • Piezoelectric catalysis and photocatalysis combined catalyst of graphene oxide doped modified bismuth tetroxide as well as preparation method and application thereof
  • Piezoelectric catalysis and photocatalysis combined catalyst of graphene oxide doped modified bismuth tetroxide as well as preparation method and application thereof
  • Piezoelectric catalysis and photocatalysis combined catalyst of graphene oxide doped modified bismuth tetroxide as well as preparation method and application thereof

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Experimental program
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Embodiment 1

[0019] Example 1: GO-Bi 2 o 4 preparation and application

[0020] (1) Preparation of GO-Bi by hydrothermal synthesis 2 o 4 , 0.02 g graphene oxide (GO) and 0.56 g sodium bismuthate dihydrate (NaBiO 3 2H 2 O) Add it into 20mL ultrapure water, place it in a stirrer and stir, so that the material is completely dispersed.

[0021] (2) The above suspension was placed in a 50 mL polytetrafluoroethylene-lined stainless steel autoclave for hydrothermal synthesis at a reaction temperature of 433K for 12 hours.

[0022] (3) The product after the hydrothermal reaction was centrifugally washed with ultrapure water for several times to neutrality, and then washed with ethanol, and then the washed product was placed in a 328K oven and dried for 12 hours.

[0023] (4) Using the catalyst obtained in (3) to piezoelectrically degrade SM. Take 50mL of the initial concentration of 30mg / L SM solution in a 100mL beaker, GO-Bi 2 o 4 The dosage of catalyst is 0.04g, using xenon light source...

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Abstract

The invention discloses a piezoelectric catalysis and photocatalysis combined catalyst of graphene oxide doped modified bismuth tetroxide, which is prepared by the following steps of: (1) adding sodium bismuthate dehydrate and graphite oxide powder into deionized water, and stirring for 1-2 hours at the water bath temperature of 293-303K to obtain uniformly dispersed turbid liquid; (2) heating theobtained turbid liquid to 433 + / -10K, and carrying out hydrothermal synthesis reaction for 5-24 hours; and (3) centrifugally washing the reaction product obtained in the step (2) by deionized water and absolute ethyl alcohol for multiple times until the reaction product is neutral, and then drying the reaction product at 333-353K for 12-16h to finish the preparation. The catalyst provided by theinvention has higher catalytic efficiency in degradation treatment of sulfamerazine in sewage.

Description

technical field [0001] The invention belongs to the technical field of water pollution, in particular to a graphene oxide doped modified bismuth tetroxide (GO-Bi 2 o 4 ) Piezoelectric catalysis and photocatalysis combined catalyst and its preparation method and application. Background technique [0002] The abuse of antibiotics pollutes the environment and brings health hazards to human beings. The spread of drug-resistant antibiotics is a serious environmental problem. Sulfamethazine (SM) is a typical sulfonamide antibiotic, widely present in polluted water. Traditional SM degradation methods, such as adsorption method and membrane separation method, etc., these methods do not completely degrade pollutants, easily cause secondary pollution, and are costly. To this end, we need to find efficient ways of water pollution treatment. [0003] Among various water pollution treatment methods, the use of photocatalytic semiconductor materials and renewable solar energy to degra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/18C02F1/30C02F1/36C02F103/34C02F101/38
CPCB01J23/18C02F1/30C02F1/36C02F2305/10C02F2101/40C02F2103/343B01J35/39B01J35/33Y02W10/37
Inventor 仇鹏翔薛宁璇陈浩轩曾渝静
Owner 南京智汇环境气象产业研究院有限公司
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