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BiVO4联合H2O2或K2S2O8光催化降解布洛芬

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李富华, 孔青青, 康亚璞, 林晓璇, 王枫亮, 陈平, 刘国光, 吕文英, 姚琨. BiVO4联合H2O2或K2S2O8光催化降解布洛芬[J]. 环境工程学报, 2016, 10(10): 5380-5386. doi: 10.12030/j.cjee.201603033
引用本文: 李富华, 孔青青, 康亚璞, 林晓璇, 王枫亮, 陈平, 刘国光, 吕文英, 姚琨. BiVO4联合H2O2或K2S2O8光催化降解布洛芬[J]. 环境工程学报, 2016, 10(10): 5380-5386. doi: 10.12030/j.cjee.201603033
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LI Fuhua, KONG Qingqing, KANG Yapu, LIN Xiaoxuan, WANG Fengliang, CHEN Ping, LIU Guoguang, LYU Wenying, YAO Kun. Photocatalytic degradation of ibuprofen via BiVO4 combined with H2O2 or K2S2O8[J]. Chinese Journal of Environmental Engineering, 2016, 10(10): 5380-5386. doi: 10.12030/j.cjee.201603033
Citation: LI Fuhua, KONG Qingqing, KANG Yapu, LIN Xiaoxuan, WANG Fengliang, CHEN Ping, LIU Guoguang, LYU Wenying, YAO Kun. Photocatalytic degradation of ibuprofen via BiVO4 combined with H2O2 or K2S2O8[J]. Chinese Journal of Environmental Engineering, 2016, 10(10): 5380-5386. doi: 10.12030/j.cjee.201603033
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BiVO4联合H2O2或K2S2O8光催化降解布洛芬

  • 1.

    广东工业大学环境科学与工程学院, 广州 510006

  • 基金项目:

    国家自然科学基金资助项目（21377031）

Photocatalytic degradation of ibuprofen via BiVO4 combined with H2O2 or K2S2O8

  • 1.

    School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China

  • Fund Project:

  • 摘要: 以水热法制备了BiVO4光催化剂，并用X射线衍射和扫描电镜对其进行表征。在模拟太阳光照射下，以布洛芬为目标污染物，考察了BiVO4联合H2O2或K2S2O8工艺对布洛芬的光催化降解效果，得出了H2O2或K2S2O8的最佳投加量。通过淬灭实验，研究了光催化联合体系降解布洛芬的机制。X射线衍射谱图表明所合成的BiVO4光催化剂为纯的单斜晶相，扫描电镜结果表明制备的粉末形貌单一，且呈现微球状。加入H2O2或K2S2O8后，一定程度上促进了BiVO4光催化降解布洛芬的效率，H2O2和K2S2O8的最佳投加量分别为3.0 mmol·L-1和1.5 g·L-1。BiVO4/H2O2/hν体系和BiVO4/K2S2O8/hν体系降解水中布洛芬主要是基于·OH自由基的氧化作用。通过对比2个体系中·OH和O2·-对布洛芬降解速率的贡献，发现K2S2O8对BiVO4光催化体系的促进作用远远大于H2O2对该体系的促进作用。
    Abstract: A BiVO4 photocatalyst was prepared by a hydrothermal process and was characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM).The photocatalytic degradation of ibuprofen (IBU) by BiVO4 in the presence of H2O2 or K2S2O8 under simulated solar irradiation was examined,and the optimum dosages of H2O2 and K2S2O8 were determined.The photocatalytic degradation mechanism of IBU was studied through quenching experiments.XRD analysis indicated that the prepared photocatalyst corresponded to phase-pure monoclinic scheelite BiVO4.The SEM micrographs indicated that the prepared BiVO4 samples consisted of microspheres.The experimental results showed that both H2O2 and K2S2O8 promote the photocatalytic degradation of IBU to some extent,and the optimum dosages of H2O2 and K2S2O8 were 3.0 mmol·L-1 and 1.5 g·L-1,respectively.The degradation mechanism of IBU in the two processes is mainly ascribed to ·OH oxidation.A comparison of the contribution of ·OH and O2·- in the two systems to the degradation rate of IBU showed that the BiVO4 photocatalytic activity in the presence of K2S2O8 was considerably better than that in the presence of H2O2.
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  • 收稿日期:  2016-03-25
  • 刊出日期:  2016-10-20

BiVO4联合H2O2或K2S2O8光催化降解布洛芬

  • 1. 广东工业大学环境科学与工程学院, 广州 510006
  • 收稿日期:  2016-03-25
基金项目:

国家自然科学基金资助项目（21377031）

摘要: 以水热法制备了BiVO4光催化剂，并用X射线衍射和扫描电镜对其进行表征。在模拟太阳光照射下，以布洛芬为目标污染物，考察了BiVO4联合H2O2或K2S2O8工艺对布洛芬的光催化降解效果，得出了H2O2或K2S2O8的最佳投加量。通过淬灭实验，研究了光催化联合体系降解布洛芬的机制。X射线衍射谱图表明所合成的BiVO4光催化剂为纯的单斜晶相，扫描电镜结果表明制备的粉末形貌单一，且呈现微球状。加入H2O2或K2S2O8后，一定程度上促进了BiVO4光催化降解布洛芬的效率，H2O2和K2S2O8的最佳投加量分别为3.0 mmol·L-1和1.5 g·L-1。BiVO4/H2O2/hν体系和BiVO4/K2S2O8/hν体系降解水中布洛芬主要是基于·OH自由基的氧化作用。通过对比2个体系中·OH和O2·-对布洛芬降解速率的贡献，发现K2S2O8对BiVO4光催化体系的促进作用远远大于H2O2对该体系的促进作用。

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