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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemistry
Active faceted nanoporous ruthenium for electrocatalytic hydrogen evolution
Journal of Materials Chemistry A, Volume 8, No. 38, Year 2020
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Description
Nanoporous ruthenium (np-Ru) comprising reaction active facets is synthesized from a ruthenium-cerium (Ru2Ce) alloy precursor. Spontaneous nanophase separation of Ru2Ce in an oxidative atmosphere results in a lamellar nanocomposite consisting of Ru metal and cerium oxide (CeO2). Selective leaching of the Ru-CeO2nanocomposite in sulfuric acid yields np-Ru with a high surface area of 48 m2g−1, predominantly surrounded by reaction active {101̄0} facets. Active-faceted np-Ru efficiently catalyzed the hydrogen evolution reaction (HER) in acidic media at an overpotential of +74 mVvs.the reversible hydrogen electrode, which is 20 mV lower than that for carbon-supported Ru (Ru/C) and rather close to +58 mV for state-of-the-art Pt/C. Np-Ru has great potential in broad applications such as hydrogen battery electrodes because of its low HER overpotential and scalable synthetic protocol. © The Royal Society of Chemistry 2020.
Authors & Co-Authors
Iqbal, Muhammad
Japan, Tsukuba
National Institute for Materials Science
Hegazy, Mohamed Barakat Zakaria
Australia, Brisbane
The University of Queensland
Yamauchi, Yusuke
Australia, Brisbane
The University of Queensland
South Korea, Seoul
Kyung Hee University
Statistics
Citations: 17
Authors: 3
Affiliations: 7
Identifiers
Doi:
10.1039/d0ta04223d
ISSN:
20507488
Research Areas
Environmental