Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/151710
Title: Atomically-thin Bi₂MoO₆ nanosheets with vacancy pairs for improved photocatalytic CO₂ reduction
Authors: Di, Jun
Zhao, Xiaoxu
Lian, Cheng
Ji, Mengxia
Xia, Jiexiang
Xiong, Jun
Zhou, Wu
Cao, Xingzhong
She, Yuanbin
Liu, Honglai
Loh, Kian Ping
Pennycook, Stephen J.
Li, Huaming
Liu, Zheng
Keywords: Engineering::Materials
Issue Date: 2019
Source: Di, J., Zhao, X., Lian, C., Ji, M., Xia, J., Xiong, J., Zhou, W., Cao, X., She, Y., Liu, H., Loh, K. P., Pennycook, S. J., Li, H. & Liu, Z. (2019). Atomically-thin Bi₂MoO₆ nanosheets with vacancy pairs for improved photocatalytic CO₂ reduction. Nano Energy, 61, 54-59. https://dx.doi.org/10.1016/j.nanoen.2019.04.029
Project: NRF-RF2013-08
MOE2016-T2-1-131
MOE2015-T2-2-007
2017-T1-001-075
Journal: Nano Energy
Abstract: Exploring efficient strategies to increase CO₂ photoreduction performance is a key challenge in the energy conversion field. Herein, a cooperative role involving an ultrathin 2D structure and surface defects is employed to design defective Bi₂MoO₆ ultrathin nanosheets, to boost the CO₂ photoreduction activity under water with no sacrificial agent, co-catalyst or extra photosensitizer. Bi₂MoO₆ ultrathin nanosheets with surface “Bi—O″ vacancy pairs are grown via a template-directed strategy, as proved by STEM-ADF and positron annihilation spectroscopy. The engineered “Bi—O″ vacancy pairs tune the local atomic structure, electronic structure of Bi₂MoO₆ and serve as charge separation centers to boost the electron-hole separation. Meanwhile, the defective ultrathin structure favors the CO₂ adsorption, activation and CO desorption processes. With the merits of atomically-thin configuration and surface defects, the defective Bi₂MoO₆ ultrathin nanosheets display 2.55 times improved CO formation rate than their bulk counterpart under light irradiation.
URI: https://hdl.handle.net/10356/151710
ISSN: 2211-2855
DOI: 10.1016/j.nanoen.2019.04.029
Rights: © 2019 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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