Synthesis method of surface hydrophobicity bismuth orthovanadate with performance of catalyzing and degrading pollutant by visible light

Abstract

The invention relates to a synthesis method of surface hydrophobicity bismuth orthovanadate with the performance of catalyzing and degrading pollutant by visible light. The synthesis method comprises the steps of: mixing solid bismuth nitrate compound and solid vanadium-containing compound according to the molar ratio between bismuth and vanadium of 1:1; then, adding the mixture into the solutionof distilled water and surface active agent, stirring for 72-120h by magnetic force, filtering, respectively washing by the distilled water and absolute ethyl alcohol, drying and then grinding into powder, and obtaining bismuth orthovanadate precursor; putting the bismuth orthovanadate precursor into a reaction kettle, carrying out heat treatment for 24h in water at 140-200 DEG C, cooling and then filtering, respectively washing by the distilled water and the absolute ethyl alcohol, drying and then grinding into powder, and obtaining the surface hydrophobicity bismuth orthovanadate. The method has simple operation, mild condition, uniform prepared bismuth orthovanadate powder granules and a surface with hydrophobicity, and is beneficial to absorbing organic matter on the surface when being used for degrading the organic matter under the irradiation of the visible light so as to enhance the catalytic activity.

Description

Technical field: The invention relates to a method for synthesizing visible light catalyst bismuth vanadate. The synthesized surface hydrophobic bismuth vanadate has the performance of degrading organic pollutants in air and sewage under visible light irradiation. The invention belongs to the technical field of inorganic non-metallic materials and photocatalytic degradation of organic pollutants. Background technique: Environmental pollution—especially the water pollution caused by industrial sewage discharge and the existence of a large number of volatile organic compounds (VOC) in the air have seriously threatened human health. In industrial sewage, the chemical oxygen demand (COD) of many refractory organic pollutants is very high, generally reaching tens of thousands of mg / L, far exceeding the national minimum discharge standard of 300 mg / L (secondary discharge standard); five days The ratio of biochemical oxygen demand to chemical oxygen demand (BOD5 / COD) is low (less ...

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Additionally, we reported that BiVO 4 In the synthesis of nanofibers, although the material is successfully synthesized, the photocatalytic activity is not ideal. The main reason may be that the lo

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