二氧化钛-钒酸铋复合材料光催化降解布洛芬的研究

Abstract

Abstract:

In order to synthesize the performance of TiO₂ and BiVO₄ photo-catalysts,a TiO₂-BiVO₄ composite photo-catalyst was prepared.And using ibuprofen as the target degradation product,the performance of TiO₂-BiVO₄ composite photo-catalyst was compared with that of TiO₂ and BiVO₄ photo-catalysts.TiO₂ photo-catalyst was prepared by gelatin method using butyl ti-tanate as raw material and adding anhydrous ethanol,hydrochloric acid and deionized water.BiVO₄ photo-catalyst and TiO₂-BiVO₄composite photo-catalyst were prepared with five water bismuth nitrate[Bi（NO₃） ₃·5H₂O] and ammonium vanadate （NH₄VO₃） asraw material by adding concentrated nitric acid and sodium hydroxide.This preparation method was simple and efficient.Under visible light irradiation,the photo-catalytic degradation of ibuprofen was carried out by using three kinds pho to-catalysts of TiO₂,BiVO₄ and TiO₂-BiVO₄ composite,and the photo-catalytic degradation of ibuprofen was also carried out by combining three kinds of photo-catalysts with hydrogen peroxide respectively.The photo-catalytic properties of the three photo-catalysts were investigated.The results showed that under the condition of no hydrogen peroxide addition,the photo-catalytic properties of the three photo-catalysts were from TiO₂-BiVO₄ composite photo-catalyst,TiO₂ photo-catalyst to BiVO₄ photo-catalyst in descending order.After adding electron capture agent H₂O₂,the efficiency of photo-catalyst degradation of ibuprofen was improved,the recombination velocity of electron hole pair was reduced,and the photo-catalytic performance of the three photo-catalysts was TiO₂-BiVO₄ composite,BiVO₄ and TiO₂ in descending order.

Key words: TiO₂, BiVO₄, TiO₂-BiVO₄composite, ibuprofen, photo-catalytic properties

CLC Number:

Gao Yanan. Photo-catalyst degradation of ibuprofen by TiO₂-BiVO₄ composites[J]. Inorganic Chemicals Industry, 2019, 51(6): 88-91.

Figures/Tables 5

References 8

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Photo-catalyst degradation of ibuprofen by TiO₂-BiVO₄ composites

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