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Highly Enhanced Photoelectrocatalytic Oxidation via Cooperative Effect of Neighboring Two Different Metal Oxides for Water Purification

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Title
Highly Enhanced Photoelectrocatalytic Oxidation via Cooperative Effect of Neighboring Two Different Metal Oxides for Water Purification
Author(s)
Jiahui Lyu; Xinghui Liu; Yan Chen; Huijun Li; Ruochang Li; Xiaoli Dong; Hyoyoung Lee; Hongchao Ma
Publication Date
2020-05
Journal
JOURNAL OF PHYSICAL CHEMISTRY C, v.124, no.21, pp.11525 - 11535
Publisher
AMER CHEMICAL SOC
Abstract
Copyright © 2020 American Chemical Society.The generation of hydroxyl radicals derived from water molecules plays a pivotal role in attacking organic pollutants for the photoelectrocatalytic (PEC) process. To promote the generation efficiency of hydroxyl radicals, remarkably efficient transportation of the induced carriers and water molecules is desirable. Here, we implemented a remarkably enhanced photoelectrocatalytic oxidation via cooperative effect of neighboring two different metal oxides, Bi2MoO6 and Sb-doped SnO2 nanosheets, for water remediation. To realize the highly efficient transportation of the induced carriers, the hierarchical architecture Bi2MoO6 wrapped Sb-doped SnO2 nanosheets are rationally designed and synthesized. Density functional theory (DFT) calculations demonstrate that water molecules prefer to be adsorbed on the surface of Sb-doped SnO2 nanosheets, producing hydroxyl radicals (•OH) on the surface of Bi2MoO6. The cooperation action between Bi2MoO6 and Sb-doped SnO2 nanosheets for the generation of hydroxyl radicals by water photoelectrolysis is enforced as follows: the Sb-doped SnO2 nanosheet layer can act as the supply station of water and rapidly transfer the water molecules to neighboring Bi2MoO6 to generate hydroxyl radical. This work may enlighten the design and construction of advanced photoanode materials for future scale-up of cost-effective water purification and environmental remediation
URI
https://pr.ibs.re.kr/handle/8788114/7852
DOI
10.1021/acs.jpcc.0c02640
ISSN
1932-7447
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
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