TY - JOUR
T1 - Anion-exchange-mediated internal electric field for boosting photogenerated carrier separation and utilization
AU - Han, Tong
AU - Cao, Xing
AU - Sun, Kaian
AU - Peng, Qing
AU - Ye, Chenliang
AU - Huang, Aijian
AU - Cheong, Weng Chon
AU - Chen, Zheng
AU - Lin, Rui
AU - Zhao, Di
AU - Tan, Xin
AU - Zhuang, Zewen
AU - Chen, Chen
AU - Wang, Dingsheng
AU - Li, Yadong
N1 - Publisher Copyright:
© 2021, The Author(s).
PY - 2021/12/1
Y1 - 2021/12/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85112679548&partnerID=8YFLogxK
U2 - 10.1038/s41467-021-25261-8
DO - 10.1038/s41467-021-25261-8
M3 - Article
C2 - 34400649
AN - SCOPUS:85112679548
SN - 2041-1723
VL - 12
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 4952
ER -