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Pd nanocrystals with continuously tunable high-index facets as a model nanocatalyst

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journal contribution
posted on 18.03.2019, 14:10 by Neng-Fe Yu, Na Tian, Zhi-You Zhou, Tian Sheng, Wen-Feng LinWen-Feng Lin, Jin-Yu Ye, Shuo Liu, Hai-Bin Ma, Shi-Gang Sun
Knowledge of the structure–reactivity relationship of catalysts is usually gained through using well-defined bulk single-crystal planes as model catalysts. However, there exists a huge gap between bulk single-crystal planes and practical nanocatalysts in terms of size, structural complexity, and local environment. Herein, we efficiently bridged this gap by developing a model nanocatalyst based on nanocrystals with continuously tunable surface structures. Pd nanocrystals with finely tunable facets, ranging from a flat {100} low-index facet to a series of {hk0} high-index facets, were prepared by an electrochemical square-wave potential method. The validity of the Pd model nanocatalyst has been demonstrated by structure–reactivity studies of electrocatalytic oxidation of small organic molecules. We further observed that Pd nanocrystals exhibited catalytic performance considerably different from bulk Pd single-crystal planes with the same Miller indices. Such differences were attributed to special catalytic functions conferred by nanocrystal edges. This study paves a promising route for investigating catalytic reactions effectively at the atomic level and nanoscales.

Funding

This work was supported by grants from National Key Research and Development Program of China (2017YFA0206500), Natural Science Foundation of China (21573181, 21603103, 91645121, and 21621091), the UK EPSRC (EP/I013229/1) and Natural Science Foundation Committee of Jiangsu Province (BK20171462).

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Published in

ACS Catalysis

Citation

YU, N-F. ... et al, 2019. Pd nanocrystals with continuously tunable high-index facets as a model nanocatalyst. ACS Catalysis, 9, pp.3144–3152.

Publisher

© American Chemical Society

Version

AM (Accepted Manuscript)

Publisher statement

This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Catalysis, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acscatal.8b04741.

Acceptance date

26/02/2019

Publication date

2019-02-26

ISSN

2155-5435

eISSN

2155-5435

Language

en