Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/156763
Title: 2D/2D atomic double-layer WS₂/Nb₂O₅ shell/core nanosheets with ultrafast interfacial charge transfer for boosting photocatalytic H₂ evolution
Authors: Lin, Bo
Chen, Hao
Zhou, Yao
Luo, Xiao
Tian, Dan
Yan, Xiaoqing
Duan, Ruihuan
Di, Jun
Kang, Lixing
Zhou, Aimin
Yang, Guidong
Li, Yonghui
Zhou, Jiadong
Liu, Zheng
Liu, Fucai
Keywords: Science::Chemistry::Physical chemistry::Catalysis
Issue Date: 2021
Source: Lin, B., Chen, H., Zhou, Y., Luo, X., Tian, D., Yan, X., Duan, R., Di, J., Kang, L., Zhou, A., Yang, G., Li, Y., Zhou, J., Liu, Z. & Liu, F. (2021). 2D/2D atomic double-layer WS₂/Nb₂O₅ shell/core nanosheets with ultrafast interfacial charge transfer for boosting photocatalytic H₂ evolution. Chinese Chemical Letters, 32(10), 3128-3132. https://dx.doi.org/10.1016/j.cclet.2021.03.057
Project: RG4/17 
MOE2019-T2-2-105 
Journal: Chinese Chemical Letters 
Abstract: Low-efficiency charge transfer is a critical factor to limit the photocatalytic H2 evolution activity of semiconductor photocatalysts. The interface design is a promising approach to achieve high charge transfer efficiency for photocatalysts. Herein, a new 2D/2D atomic double-layer WS2/Nb2O5 shell/core photocatalyst (DLWS/Nb2O5) is designed. The atom-resolved HAADF-STEM results unravel the presence of an unusual 2D/2D shell/core interface in DLWS/Nb2O5. Taking advantage of the advanced femtosecond-resolved ultrafast TAS spectra, the average lifetime of charge carriers for DLWS/Nb2O5 (180.97 ps) is considerably shortened as compared to that of Nb2O5 (230.50 ps), strongly indicating that the 2D/2D shell/core interface enables DLWS/Nb2O5 to achieve ultrafast charge transfer from Nb2O5 to atomic double-layer WS2, thus yielding a high photocatalytic H2 evolution rate of 237.6mmol/h, up to 10.8 times higher than that of pure Nb2O5 nanosheet. This study will open a new window for the development of high-efficient photocatalytic systems through the interface design.
URI: https://hdl.handle.net/10356/156763
ISSN: 1001-8417
DOI: 10.1016/j.cclet.2021.03.057
Schools: School of Materials Science and Engineering 
School of Physical and Mathematical Sciences 
Rights: © 2021 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. All rights reserved. This paper was published by Elsevier in Chinese Chemical Letters and is made available with permission of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles
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