Iridium- and osmium-decorated reduced graphenes as promising catalysts for hydrogen evolution

Renewable energy sources are highly sought after as a result of numerous worldwide problems concerning the environment and the shortage of energy. Currently, the focus in the field is on the development of catalysts that are able to provide water splitting catalysis and energy storage for the hydrog...

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Main Authors: Lim, Chee Shan, Sofer, Zdeněk, Toh, Rou Jun, Eng, Alex Yong Sheng, Luxa, Jan, Pumera, Martin
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2015
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Online Access:https://hdl.handle.net/10356/107352
http://hdl.handle.net/10220/25611
http://dx.doi.org/10.1002/cphc.201500174
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1073522019-12-06T22:29:12Z Iridium- and osmium-decorated reduced graphenes as promising catalysts for hydrogen evolution Lim, Chee Shan Sofer, Zdeněk Toh, Rou Jun Eng, Alex Yong Sheng Luxa, Jan Pumera, Martin School of Physical and Mathematical Sciences DRNTU::Science::Chemistry::Physical chemistry::Catalysis Renewable energy sources are highly sought after as a result of numerous worldwide problems concerning the environment and the shortage of energy. Currently, the focus in the field is on the development of catalysts that are able to provide water splitting catalysis and energy storage for the hydrogen evolution reaction (HER). While platinum is an excellent material for HER catalysis, it is costly and rare. In this work, we investigated the electrocatalytic abilities of various graphene–metal hybrids to replace platinum for the HER. The graphene materials were doped with 4f metals, namely, iridium, osmium, platinum and rhenium, as well as 3d metals, namely, cobalt, iron and manganese. We discovered that a few hybrids, in particular iridium- and osmium-doped graphenes, have the potential to become competent electrocatalysts owing to their low costs and—more importantly—to their promising electrochemical performances towards the HER. One of the more noteworthy observations of this work is the superiority of these two hybrids over MoS2, a well-known electrocatalyst for the HER. 2015-05-20T02:27:24Z 2019-12-06T22:29:12Z 2015-05-20T02:27:24Z 2019-12-06T22:29:12Z 2015 2015 Journal Article Lim, C. S., Sofer, Z., Toh, R. J., Eng, A. Y. S., Luxa, J., & Pumera, M. (2015). Iridium- and osmium-decorated reduced graphenes as promising catalysts for hydrogen evolution. ChemPhysChem, 16(9), 1898-1905. 1439-4235 https://hdl.handle.net/10356/107352 http://hdl.handle.net/10220/25611 http://dx.doi.org/10.1002/cphc.201500174 en ChemPhysChem © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Science::Chemistry::Physical chemistry::Catalysis
spellingShingle DRNTU::Science::Chemistry::Physical chemistry::Catalysis
Lim, Chee Shan
Sofer, Zdeněk
Toh, Rou Jun
Eng, Alex Yong Sheng
Luxa, Jan
Pumera, Martin
Iridium- and osmium-decorated reduced graphenes as promising catalysts for hydrogen evolution
description Renewable energy sources are highly sought after as a result of numerous worldwide problems concerning the environment and the shortage of energy. Currently, the focus in the field is on the development of catalysts that are able to provide water splitting catalysis and energy storage for the hydrogen evolution reaction (HER). While platinum is an excellent material for HER catalysis, it is costly and rare. In this work, we investigated the electrocatalytic abilities of various graphene–metal hybrids to replace platinum for the HER. The graphene materials were doped with 4f metals, namely, iridium, osmium, platinum and rhenium, as well as 3d metals, namely, cobalt, iron and manganese. We discovered that a few hybrids, in particular iridium- and osmium-doped graphenes, have the potential to become competent electrocatalysts owing to their low costs and—more importantly—to their promising electrochemical performances towards the HER. One of the more noteworthy observations of this work is the superiority of these two hybrids over MoS2, a well-known electrocatalyst for the HER.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Lim, Chee Shan
Sofer, Zdeněk
Toh, Rou Jun
Eng, Alex Yong Sheng
Luxa, Jan
Pumera, Martin
format Article
author Lim, Chee Shan
Sofer, Zdeněk
Toh, Rou Jun
Eng, Alex Yong Sheng
Luxa, Jan
Pumera, Martin
author_sort Lim, Chee Shan
title Iridium- and osmium-decorated reduced graphenes as promising catalysts for hydrogen evolution
title_short Iridium- and osmium-decorated reduced graphenes as promising catalysts for hydrogen evolution
title_full Iridium- and osmium-decorated reduced graphenes as promising catalysts for hydrogen evolution
title_fullStr Iridium- and osmium-decorated reduced graphenes as promising catalysts for hydrogen evolution
title_full_unstemmed Iridium- and osmium-decorated reduced graphenes as promising catalysts for hydrogen evolution
title_sort iridium- and osmium-decorated reduced graphenes as promising catalysts for hydrogen evolution
publishDate 2015
url https://hdl.handle.net/10356/107352
http://hdl.handle.net/10220/25611
http://dx.doi.org/10.1002/cphc.201500174
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