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Anion-exchange-mediated internal electric field for boosting photogenerated carrier separation and utilization
Han, Tong1; Cao, Xing1; Sun, Kaian1; Peng, Qing1; Ye, Chenliang1; Huang, Aijian1; Cheong, Weng Chon2; Chen, Zheng3; Lin, Rui4; Zhao, Di5; Tan, Xin1; Zhuang, Zewen1; Chen, Chen1; Wang, Dingsheng1; Li, Yadong1
Source PublicationNature Communications

Heterojunctions modulated internal electric field (IEF) usually result in suboptimal efficiencies in carrier separation and utilization because of the narrow IEF distribution and long migration paths of photocarriers. In this work, we report distinctive bismuth oxyhydroxide compound nanorods (denoted as BOH NRs) featuring surface-exposed open channels and a simple chemical composition; by simply modifying the bulk anion layers to overcome the limitations of heterojunctions, the bulk IEF could be readily modulated. Benefiting from the unique crystal structure and the localization of valence electrons, the bulk IEF intensity increases with the atomic number of introduced halide anions. Therefore, A low exchange ratio (~10%) with halide anions (I, Br, Cl) gives rise to a prominent elevation in carrier separation efficiency and better photocatalytic performance for benzylamine coupling oxidation. Here, our work offers new insights into the design and optimization of semiconductor photocatalysts.

URLView the original
Indexed BySCIE
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000686641700002
Scopus ID2-s2.0-85112679548
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Cited Times [WOS]:15   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorPeng, Qing; Chen, Chen; Li, Yadong
Affiliation1.Department of Chemistry, Tsinghua University, Beijing, China
2.Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, Macao
3.College of Chemistry and Materials Science, Anhui Normal University, Wuhu, China
4.Nanoinstitute Munich, Ludwig-Maximilians-Universität München, Munich, Germany
5.Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, China
Recommended Citation
GB/T 7714
Han, Tong,Cao, Xing,Sun, Kaian,et al. Anion-exchange-mediated internal electric field for boosting photogenerated carrier separation and utilization[J]. Nature Communications,2021,12(1).
APA Han, Tong,Cao, Xing,Sun, Kaian,Peng, Qing,Ye, Chenliang,Huang, Aijian,Cheong, Weng Chon,Chen, Zheng,Lin, Rui,Zhao, Di,Tan, Xin,Zhuang, Zewen,Chen, Chen,Wang, Dingsheng,&Li, Yadong.(2021).Anion-exchange-mediated internal electric field for boosting photogenerated carrier separation and utilization.Nature Communications,12(1).
MLA Han, Tong,et al."Anion-exchange-mediated internal electric field for boosting photogenerated carrier separation and utilization".Nature Communications 12.1(2021).
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