Controlled synthesis of BiVO₄/SrTiO₃ composite with enhanced sunlight-driven photofunctions for sulfamethoxazole removal

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• 作者：Jinhai Li^a ; ^b ; ^{lijinhai5@126.com" class="auth_mail" title="E-mail the corresponding author} ; Fei Wang^a ; Lingjun Meng^a ; Mengshu Han^a ; Yang Guo^a ; Cheng Sun^a ; ^{edunju@yahoo.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：BiVO4 ; SrTiO3 ; Sunlight-driven ; Sulfamethoxazole
• 刊名：Journal of Colloid and Interface Science
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：485
• 期：Complete
• 页码：116-122
• 全文大小：2255 K

文摘

The presence of antibiotics in surface waters is paid more and more attention, which is difficult to be removed by conventional treatment technology, and photocatalytic technology is considered to be a promising method for antibiotics pollutant removal. In the present work, a novel heterojunction photocatalyst was successfully synthesized by self-template method under hydrothermal condition. The photocatalytic activity of as-prepared samples was investigated by degradation of sulfamethoxazole in aqueous solution. The BiVO₄/SrTiO₃ composites showed superior photocatalytic efficiency under xenon lamp irradiation. The recycling tests proved that BiVO₄/SrTiO₃ composite was high stability and easily separated. The degradation efficiency of BiVO₄/SrTiO₃ composite was also greatly influenced by active species. It indicated that approximately 50% TOC reduction was achieved after 1 h photocatalytic reaction. The intermediates were investigated by LC-MS analyses, which revealed that the bonds of CO, CS, CC, CN, isoxazole ring and benzene ring were broken by attacking of active species.