journal article·2023-12-26Open access

Tuning the Pt–Ru Atomic Neighbors for Active and Stable Methanol Oxidation Electrocatalysis

Agus R. Poerwoprajitno, Qinyu Li, Soshan Cheong, Lucy Gloag, Yuwei Yang, Bijil Subhash, Nicholas M. Bedford, John Watt, Dale L. Huber, J. Justin Gooding, Wolfgang Schuhmann, Richard D. Tilley

Chemistry of Materials· Volume 35· Issue 24

Abstract

Controlling the coordination environment of the nanocatalyst surface is a major synthetic challenge to producing electrocatalysts with high activity and high stability. This is particularly important for the methanol oxidation reaction (MOR) in which multiple neighboring metal atoms are needed to prevent CO poisoning. Using a combination of tunable Pt-island size and a spreading process, we can vary the Pt loading on branched Ru nanoparticles, which leads to tunable proportions of Pt–Pt and Pt–Ru neighboring atoms at the surface. The controlled coordination environments are shown to be critical to stripping poisoning CO intermediates and can be precisely tuned to achieve highly active and stable MOR catalysts. These results show a new concept in synthetically controlling the coordination environment around a catalytic site for improved activity and stability that can be applied to other multimetal nanocatalysts.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Electrocatalysts for Energy Conversion · Catalytic Processes in Materials Science · Catalysis and Oxidation Reactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia

Mark Wainwright Analytical Centre, The University of New South Wales, Sydney, New South Wales 2052, Australia

School of Chemical Engineering, The University of New South Wales, Sydney, New South Wales 2052, Australia

Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States

Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, New Mexico 87185, United States

Australian Centre for NanoMedicine, The University of New South Wales, Sydney, New South Wales 2052, Australia

Analytical Chemistry─Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, D-44780 Bochum, Germany

Funding

Australian Research Council

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