Structure and Stability of Core–Shell Cu–Pt Nanoparticles for Catalytic Applications

Alexandre C. Foucher; Daniel J. Rosen; Lucy K. Decker; Robert J. Macfarlane; Christopher B. Murray; Eric A. Stach; Frances M. Ross

doi:10.1021/acs.chemmater.3c02334

journal article·2023-10-24

Structure and Stability of Core–Shell Cu–Pt Nanoparticles for Catalytic Applications

Alexandre C. Foucher, Daniel J. Rosen, Lucy K. Decker, Robert J. Macfarlane, Christopher B. Murray, Eric A. Stach, Frances M. Ross

Chemistry of Materials· Volume 35· Issue 20

Publisher page

Source abstract

Abstract

We have successfully synthesized monodisperse core–shell Cu–Pt particles through a solvothermal method that enables control of the shell thickness to enhance the exposed Pt surface area and maintain a narrow size distribution. The core–shell Cu–Pt particles were tested as catalysts for the oxygen reduction reaction and showed promising catalytic properties. Postcatalysis analysis showed that most particles remain stable after catalysis. In situ electron microscopy demonstrates the remarkable stability of the sample in an oxidizing environment. It also visualizes the degradation mechanisms in oxidative conditions as being segregation of Pt and Cu oxide and the loss of the core–shell configuration. These core–shell Cu–Pt particles have the potential to improve the effectiveness of costly metals used in surface reactions for heterogeneous catalysis.

Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials Catalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Catalytic Processes in Materials Science · Nanomaterials for catalytic reactions

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

Affiliations

Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States

Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States

Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States

Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States

Funding

Semiconductor Research Corporation · Office of Naval Research Global · Office of Science

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