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π–π interaction between metal–organic framework and reduced graphene oxide for visible-light photocatalytic H2 production.

Karthik, Peramaiah; Vinoth, Ramalingam; Zhang, Peng; Choi, Wonyong; Balaraman, Ekambaram; Neppolian, Bernaurdshaw

Authors

Peramaiah Karthik

Peng Zhang

Wonyong Choi

Ekambaram Balaraman

Bernaurdshaw Neppolian



Abstract

Solar water splitting provides a promising path for sustainable hydrogen production and solar energy storage. In recent times, metal-organic frameworks (MOFs) have received considerable attention as promising materials for diverse solar energy conversion applications. However, their photocatalytic performance is poor and rarely explored due to rapid electron-hole recombination. Herein, we have developed a material MOF@rGO that exhibits highly enhanced visible-light photocatalytic activity. A real-time investigation reveals that a strong π-π interaction between MOF and rGO is responsible for efficient separation of electron-hole pairs, and thereby enhances the photocatalytic hydrogen production activity. Surprisingly, MOF@rGO showed ∼9.1-fold enhanced photocatalytic hydrogen production activity compared to that of pristine MOF. In addition, it is worth mentioning here that remarkable apparent quantum efficiency (0.66%) is achieved by π-π interaction mediated charge carrier separation.

Citation

KARTHIK, P., VINOTH, R., ZHANG, P., CHOI, W., BALARAMAN, E. and NEPPOLIAN, B. 2018. π–π interaction between metal–organic framework and reduced graphene oxide for visible-light photocatalytic H2 production. ACS applied energy materials [online], 1(5), pages 1913-1923. Available from: https://doi.org/10.1021/acsaem.7b00245

Journal Article Type Article
Acceptance Date Apr 19, 2018
Online Publication Date Apr 19, 2018
Publication Date May 29, 2018
Deposit Date Oct 24, 2023
Publicly Available Date Jun 13, 2024
Journal ACS applied energy materials
Electronic ISSN 2574-0962
Publisher ACS Publications
Peer Reviewed Peer Reviewed
Volume 1
Issue 5
Pages 1913-1923
DOI https://doi.org/10.1021/acsaem.7b00245
Keywords Metal−organic framework; π−πinteraction; Reduced graphene oxide; Photocatalyst; Hhydrogen production
Public URL https://rgu-repository.worktribe.com/output/2120497

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Copyright Statement
This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Energy Materials, copyright © 2018 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsaem.7b00245





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