Atomically-thin Bi                         2                         MoO                         6                          nanosheets with vacancy pairs for improved photocatalytic CO                         2                          reduction

Jun Di; Xiaoxu Zhao; Cheng Lian; Mengxia Ji; Jiexiang Xia; Jun Xiong; Wu Zhou; Xingzhong Cao; Yuanbin She; Honglai Liu; Kian Ping Loh; Stephen J. Pennycook; Huaming Li; Zheng Liu

doi:10.1016/j.nanoen.2019.04.029

Atomically-thin Bi ₂ MoO ₆ nanosheets with vacancy pairs for improved photocatalytic CO ₂ reduction

Jun Di, Xiaoxu Zhao, Cheng Lian, Mengxia Ji, Jiexiang Xia^*, Jun Xiong, Wu Zhou, Xingzhong Cao, Yuanbin She, Honglai Liu, Kian Ping Loh, Stephen J. Pennycook, Huaming Li, Zheng Liu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

292 Citations (Scopus)

Abstract

Exploring efficient strategies to increase CO ₂ 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 Bi ₂ MoO ₆ ultrathin nanosheets, to boost the CO ₂ photoreduction activity under water with no sacrificial agent, co-catalyst or extra photosensitizer. Bi ₂ MoO ₆ ultrathin nanosheets with surface “Bi[sbnd]O″ vacancy pairs are grown via a template-directed strategy, as proved by STEM-ADF and positron annihilation spectroscopy. The engineered “Bi[sbnd]O″ vacancy pairs tune the local atomic structure, electronic structure of Bi ₂ MoO ₆ and serve as charge separation centers to boost the electron-hole separation. Meanwhile, the defective ultrathin structure favors the CO ₂ adsorption, activation and CO desorption processes. With the merits of atomically-thin configuration and surface defects, the defective Bi ₂ MoO ₆ ultrathin nanosheets display 2.55 times improved CO formation rate than their bulk counterpart under light irradiation.

Original language	English
Pages (from-to)	54-59
Number of pages	6
Journal	Nano Energy
Volume	61
DOIs	https://doi.org/10.1016/j.nanoen.2019.04.029
Publication status	Published - Jul 2019
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2019 Elsevier Ltd

ASJC Scopus Subject Areas

Renewable Energy, Sustainability and the Environment
General Materials Science
Electrical and Electronic Engineering

Keywords

Bi MoO
CO reduction
Photocatalytic
Ultrathin
Vacancy pairs

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.nanoen.2019.04.029

Cite this

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 Bi ₂ MoO ₆ nanosheets with vacancy pairs for improved photocatalytic CO ₂ reduction Nano Energy, 61, 54-59. https://doi.org/10.1016/j.nanoen.2019.04.029

Di, Jun ; Zhao, Xiaoxu ; Lian, Cheng et al. / Atomically-thin Bi ₂ MoO ₆ nanosheets with vacancy pairs for improved photocatalytic CO ₂ reduction In: Nano Energy. 2019 ; Vol. 61. pp. 54-59.

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title = " Atomically-thin Bi 2 MoO 6 nanosheets with vacancy pairs for improved photocatalytic CO 2 reduction ",

abstract = " Exploring efficient strategies to increase CO 2 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 Bi 2 MoO 6 ultrathin nanosheets, to boost the CO 2 photoreduction activity under water with no sacrificial agent, co-catalyst or extra photosensitizer. Bi 2 MoO 6 ultrathin nanosheets with surface “Bi[sbnd]O″ vacancy pairs are grown via a template-directed strategy, as proved by STEM-ADF and positron annihilation spectroscopy. The engineered “Bi[sbnd]O″ vacancy pairs tune the local atomic structure, electronic structure of Bi 2 MoO 6 and serve as charge separation centers to boost the electron-hole separation. Meanwhile, the defective ultrathin structure favors the CO 2 adsorption, activation and CO desorption processes. With the merits of atomically-thin configuration and surface defects, the defective Bi 2 MoO 6 ultrathin nanosheets display 2.55 times improved CO formation rate than their bulk counterpart under light irradiation.",

keywords = "Bi MoO, CO reduction, Photocatalytic, Ultrathin, Vacancy pairs",

author = "Jun Di and Xiaoxu Zhao and Cheng Lian and Mengxia Ji and Jiexiang Xia and Jun Xiong and Wu Zhou and Xingzhong Cao and Yuanbin She and Honglai Liu and Loh, {Kian Ping} and Pennycook, {Stephen J.} and Huaming Li and Zheng Liu",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = jul,

doi = "10.1016/j.nanoen.2019.04.029",

language = "English",

volume = "61",

pages = "54--59",

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Di, J, Zhao, X, Lian, C, Ji, M, Xia, J, Xiong, J, Zhou, W, Cao, X, She, Y, Liu, H, Loh, KP, Pennycook, SJ, Li, H & Liu, Z 2019, ' Atomically-thin Bi ₂ MoO ₆ nanosheets with vacancy pairs for improved photocatalytic CO ₂ reduction ', Nano Energy, vol. 61, pp. 54-59. https://doi.org/10.1016/j.nanoen.2019.04.029

Atomically-thin Bi ₂ MoO ₆ nanosheets with vacancy pairs for improved photocatalytic CO ₂ reduction . / Di, Jun; Zhao, Xiaoxu; Lian, Cheng et al.
In: Nano Energy, Vol. 61, 07.2019, p. 54-59.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Atomically-thin Bi 2 MoO 6 nanosheets with vacancy pairs for improved photocatalytic CO 2 reduction

AU - Di, Jun

AU - Zhao, Xiaoxu

AU - Lian, Cheng

AU - Ji, Mengxia

AU - Xia, Jiexiang

AU - Xiong, Jun

AU - Zhou, Wu

AU - Cao, Xingzhong

AU - She, Yuanbin

AU - Liu, Honglai

AU - Loh, Kian Ping

AU - Pennycook, Stephen J.

AU - Li, Huaming

AU - Liu, Zheng

PY - 2019/7

Y1 - 2019/7

N2 - Exploring efficient strategies to increase CO 2 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 Bi 2 MoO 6 ultrathin nanosheets, to boost the CO 2 photoreduction activity under water with no sacrificial agent, co-catalyst or extra photosensitizer. Bi 2 MoO 6 ultrathin nanosheets with surface “Bi[sbnd]O″ vacancy pairs are grown via a template-directed strategy, as proved by STEM-ADF and positron annihilation spectroscopy. The engineered “Bi[sbnd]O″ vacancy pairs tune the local atomic structure, electronic structure of Bi 2 MoO 6 and serve as charge separation centers to boost the electron-hole separation. Meanwhile, the defective ultrathin structure favors the CO 2 adsorption, activation and CO desorption processes. With the merits of atomically-thin configuration and surface defects, the defective Bi 2 MoO 6 ultrathin nanosheets display 2.55 times improved CO formation rate than their bulk counterpart under light irradiation.

AB - Exploring efficient strategies to increase CO 2 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 Bi 2 MoO 6 ultrathin nanosheets, to boost the CO 2 photoreduction activity under water with no sacrificial agent, co-catalyst or extra photosensitizer. Bi 2 MoO 6 ultrathin nanosheets with surface “Bi[sbnd]O″ vacancy pairs are grown via a template-directed strategy, as proved by STEM-ADF and positron annihilation spectroscopy. The engineered “Bi[sbnd]O″ vacancy pairs tune the local atomic structure, electronic structure of Bi 2 MoO 6 and serve as charge separation centers to boost the electron-hole separation. Meanwhile, the defective ultrathin structure favors the CO 2 adsorption, activation and CO desorption processes. With the merits of atomically-thin configuration and surface defects, the defective Bi 2 MoO 6 ultrathin nanosheets display 2.55 times improved CO formation rate than their bulk counterpart under light irradiation.

KW - Bi MoO

KW - CO reduction

KW - Photocatalytic

KW - Ultrathin

KW - Vacancy pairs

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JF - Nano Energy

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Di J, Zhao X, Lian C, Ji M, Xia J, Xiong J et al. Atomically-thin Bi ₂ MoO ₆ nanosheets with vacancy pairs for improved photocatalytic CO ₂ reduction Nano Energy. 2019 Jul;61:54-59. doi: 10.1016/j.nanoen.2019.04.029