文献类型：期刊文献

英文题名：Magnetic field assisted α-Fe2O3/Zn1?xFexO heterojunctions for accelerating antiviral agents degradation under visible-light

作者：Wu, Yadong Li, Tao Ren, Xulin Fu, Yuanxiang Zhang, Hongyan Feng, Xiaoqing Huang, Hongsheng Xie, Ruishi

机构：[1] School of International Education, School of Chemical Engineering, Guizhou Institute of Technology, Guiyang, 550003, China; [2] School of Materials Science and Engineering, Analytical and Testing Center, Southwest University of Science and Technology, Mianyang, 621010, China

第一机构：贵州理工学院化学工程学院

年份：2022

卷号：10

期号：1

外文期刊名：Journal of Environmental Chemical Engineering

收录：EI(收录号：20215111334700);Scopus(收录号：2-s2.0-85121098347)

基金：Sivanandam Sivasankaran received his MSc, MPhil, and PhD degrees from Bharathiar University, India, in 2000, 2002, 2006, respectively. Afterwards, he received Post-Doctoral Fellowship from National Cheng Kung University, Taiwan, and National Taiwan University, Taiwan. He was a Research Professor in Yonsei University, South Korea. He was an Assistant Professor in Sungkyunkwan University, South Korea. Presently, he is a Senior Lecturer in the Institute of Mathematical Sciences, University of Malaya, Malaysia. He is a member of editorial board in several international journals and reviewer of more than 20 international journals. He is an Associate Editor in Journal of Applied Fluid Mechanics & Frontiers in Mechanical Engineering. His areas of interest are convective heat and mass transfer, CFD, nano uids, micro-channel heat sinks, and porous media.

语种：英文

外文关键词：Free radicals - Hematite - Image enhancement - Light - Magnetoresistance - Photocatalytic activity

摘要：Reducing the recombination efficiency of photo-induced carriers has been found as an effective means to improve the degradation of antiviral agents. Given that the Lorentz forces can cause the abnormal charge to move in the opposite direction, external magnetic field improved α-Fe2O3/Zn1?xFexO heterojunctions (FZHx) were developed to remove increasing antiviral agents that were attributed to the COVID-19 pandemic under visible light. The characterization of the mentioned FZHx in the external magnetic field indicated that FZHx had perfect photocatalytic activity for degrading antiviral agents. In the external magnetic field, the quantities of photo-generated carriers and free radicals (?OH and ?O2-) derived from FZHx increased significantly, which improved antiviral agent removal by 30.0%. Though the band structure (α-Fe2O3) is unlikely to change due to some orders of magnitude weaker of Zeeman energy in magnetic fields, which insignificantly impacts photocatalytic performance. However, this study proposed a strategy of negative magnetoresistance effects and heterojunctions to facilitate the separation and transfer of photo-induced carriers in magnetic fields. Based on the proposed strategy, spin oriented electrons were selected and accumulated on the conduction band, which contributed to the degradation of antiviral agents. Overall, this study presented novel insights into the improved degradation performance of antiviral agents by applying Fe-based heterojunctions in an external magnetic field. ? 2021 Elsevier Ltd