一种用于增强酮洛芬降解的新型 Ag-BiOBr-rGO 光催化剂：动力学和机制。
A novel Ag-BiOBr-rGO photocatalyst for enhanced ketoprofen degradation: Kinetics and mechanisms.
机构信息
Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
出版信息
Sci Total Environ. 2019 Aug 15;678:173-180. doi: 10.1016/j.scitotenv.2019.04.418. Epub 2019 Apr 29.
Ag-BiOBr-reduced graphene oxide (rGO) was synthesized for the first time and used to promote photocatalytic activity under visible-light irradiation. The Ag-BiOBr-rGO showed an excellent photocatalytic activity to degrade ketoprofen compared with other photocatalysts. The composites were comprehensively characterized to explore the mechanisms of the enhancement. Electron Paramagnetic Resonance and scavenger experiments demonstrated that the superoxide radical was the active species. Ketoprofen was completely removed in 120 min. The high photocatalytic activity and stability of the catalyst indicated that the Ag-BiOBr-rGO may have broad application prospects for eliminating pharmaceuticals from wastewater. Four reaction intermediates of ketoprofen were detected by LC-MS/MS and degradation routes were proposed.
Ag-BiOBr-还原氧化石墨烯（rGO）首次被合成，并用于在可见光照射下促进光催化活性。与其他光催化剂相比，Ag-BiOBr-rGO 显示出优异的降解酮洛芬的光催化活性。对复合材料进行了全面的表征，以探索增强的机制。电子顺磁共振和清除剂实验表明，超氧自由基是活性物质。酮洛芬在 120 分钟内被完全去除。催化剂具有高的光催化活性和稳定性，表明 Ag-BiOBr-rGO 可能具有从废水中去除药物的广阔应用前景。通过 LC-MS/MS 检测到了酮洛芬的四个反应中间体，并提出了降解途径。
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