Print Email Facebook Twitter Tuning electron transfer by crystal facet engineering of BiVO4 for boosting visible-light driven photocatalytic reduction of bromate Title Tuning electron transfer by crystal facet engineering of BiVO4 for boosting visible-light driven photocatalytic reduction of bromate Author Liu, Guoshuai (Jiangnan University) Zhu, Yukun (Qingdao University of Technology) Yan, Qun (Jiangnan University; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment) Wang, Han (Jiangnan University) Wu, Peng (Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment) Shen, Yaoliang (Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment) Doekhi-Bennani, Y. (TU Delft Sanitary Engineering) Date 2021 Abstract Removal of bromate (BrO3−) has gained increasing attention in drinking water treatment process. Photocatalysis technology is an effective strategy for bromate removal. During the photocatalytic reduction of bromate process, the photo-generated electrons are reductive species toward bromate reduction and photo-generated holes responsible for water oxidation. In this study, the monoclinic bismuth vanadate (BiVO4) single crystal was developed as a visible photocatalyst for the effective removal of bromate. The as-synthesized BiVO4 photocatalyst with optimized {010} and {110} facets ratio could achieve almost 100% removal efficiency of BrO3− driven by visible light with a first-order kinetic constant of 0.0368 min−1. As demonstrated by the electron scavenger experiment and density functional theory (DFT) calculations, the exposed facets of BiVO4 should account for the high photocatalytic reduction efficiency. Under visible light illumination, the photo-generated electron and holes were spatially transferred to {010} facets and {110} facets, respectively. The BiVO4 single crystal photocatalyst may serve as an attractive photocatalyst by virtue of its response to the visible light, spatially charge transfer and separation as well as high photocatalytic activity, which will make the removal of BrO3− in water much easier, more economical and more sustainable. Subject Bismuth vanadateBromateCrystal engineeringPhotocatalysis To reference this document use: http://resolver.tudelft.nl/uuid:fadaa87f-1530-40a6-b244-25b88dae6b78 DOI https://doi.org/10.1016/j.scitotenv.2020.143086 Embargo date 2023-01-13 ISSN 0048-9697 Source Science of the Total Environment, 762 Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2021 Guoshuai Liu, Yukun Zhu, Qun Yan, Han Wang, Peng Wu, Yaoliang Shen, Y. Doekhi-Bennani Files PDF STOTEN_D_20_19314_R2_1_.pdf 1.33 MB Close viewer /islandora/object/uuid:fadaa87f-1530-40a6-b244-25b88dae6b78/datastream/OBJ/view