DataVXACS NanoPaper
journal article·2022-09-27Open access

Reversible Growth of Gold Nanoparticles in the Low-Temperature Water–Gas Shift Reaction

James H. Carter, Ali M. Abdel-Mageed, Dan Zhou, David J. Morgan, Xi Liu, Joachim Bansmann, Shilong Chen, R. Jürgen Behm, Graham J. Hutchings

ACS Nano· Volume 16· Issue 9
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Source abstract

Abstract

Supported gold nanoparticles are widely studied catalysts and are among the most active known for the low-temperature water-gas shift reaction, which is essential in fuel and energy applications, but their practical application has been limited by their poor thermal stability. The catalysts deactivate on-stream via the growth of small Au nanoparticles. Using operando X-ray absorption and in situ scanning transmission electron microscopy, we report direct evidence that this process can be reversed by carrying out a facile oxidative treatment, which redisperses the gold nanoparticles and restores catalytic activity. The use of in situ methods reveals the complex dynamics of supported gold nanoparticles under reaction conditions and demonstrates that gold catalysts can be easily regenerated, expanding their scope for practical application.
Source: europepmc · Quality: candidate unverified · Source record ↗

Research context

NanomaterialsCatalysis & surfaces

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

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

Affiliations

Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom

Institute of Surface Chemistry and Catalysis, Ulm University, Albert-Einstein-Allee 47, D-89081, Ulm, Germany

Leibniz Institute for Catalysis (LIKAT Rostock), D-18059 Rostock, Germany

DENSsolutions B.V., Delft 2628 ZD The Netherlands

School of Chemistry and Chemical Engineering, In situ Center for Physical Sciences, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai, China, 200240

Funding

Ministry of Science and Technology of the People's Republic of China · National Natural Science Foundation of China

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