College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China.
College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China.
Chemosphere. 2022 Mar;291(Pt 3):133001. doi: 10.1016/j.chemosphere.2021.133001. Epub 2021 Nov 19.
The photo-Fenton-like catalytic process has shown great application potential in environmental remediation. Herein, a novel photo-Fenton-like catalyst of BiWO nanosheets decorated hortensia-like CoAl-layered double hydroxides (BiWO/CoAl-LDHs) was synthesized via hydrothermal process. The optimized BiWO/CoAl-LDHs composite performed the high-efficiency photo-Fenton-like catalytic performance for oxytetracycline (OTC) removal (98.47%) in the mediation of visible-light and HO. The comparative experiment, technical characterization and density functional theory calculation results indicated that the efficient photo-Fenton-like catalytic performance of BiWO/CoAl-LDHs was attributed to the synergistic action of the Fenton-like process of cobalt ions in CoAl-LDHs, an internal electric field and the S-scheme heterojunction form between BiWO and CoAl-LDHs, which could significantly promote the active substance formation and the photocatalytic process in the catalytic system. This study will stimulate the new inspiration of designing the efficient catalytic system for environmental remediation and other fields.
类光芬顿催化过程在环境修复中显示出巨大的应用潜力。本文通过水热法合成了一种新型的类光芬顿催化剂——BiWO 纳米片修饰的绣球花状 CoAl 层状双氢氧化物（BiWO/CoAl-LDHs）。优化后的 BiWO/CoAl-LDHs 复合材料在可见光和 HO 的介导下，对土霉素（OTC）的去除具有高效的类光芬顿催化性能（98.47%）。对比实验、技术表征和密度泛函理论计算结果表明，BiWO/CoAl-LDHs 高效的类光芬顿催化性能归因于 CoAl-LDHs 中钴离子的类芬顿过程、内电场以及 BiWO 和 CoAl-LDHs 之间 S 型肖特基异质结形式的协同作用，这可以显著促进催化体系中活性物质的形成和光催化过程。本研究将为环境修复等领域的高效催化体系设计激发新的灵感。
