Hierarchically fractal PtPdCu sponges and their directed mass- and electron-transfer effects

Xiao, Y.-X. et al. (2021) Hierarchically fractal PtPdCu sponges and their directed mass- and electron-transfer effects. Nano Letters, 21(18), pp. 7870-7878. (doi: 10.1021/acs.nanolett.1c02268) (PMID:34318680)

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Fractal Pt-based materials with hierarchical structures and high self-similarity have attracted more and more attention due to their bioinspiring maximum optimization of energy utilization and mass transfer. However, their high-efficiency design of the mass- and electron-transfer still remains to be a great challenge. Herein, fractal PtPdCu hollow sponges (denoted as PtPdCu-HS) facilitating both directed mass- and electron-transfer are presented. Such directed transfer effects greatly promote electrocatalytic activity, regarded as 3.9 times the mass activity, 7.3 times the specific activity, higher poison tolerance, and higher stability than commercial Pt/C for the methanol oxidation reaction (MOR). A new “directed mass- and electron-transfer” concept, characteristics, and mechanism are proposed at the micro/nanoscale to clarify the structural design and functional enhancement of fractal electrocatalyst. This work displays new possibilities for designing novel nanomaterials with high activity and superior stability toward electrocatalysis or other practical applications.

Item Type:Articles
Additional Information:This work was supported by a joint National Natural Science Foundation of China-Deutsche Forschungsgemein-schaft (NSFC-DFG) project (NSFC Grant 51861135313, DFG JA466/39-1), Sino-German Center COVID-19 Related Bilateral Collaborative project (C-0046), Jilin Province Science and Technology Development Plan (20180101208JC), FRFCU (19lgzd16, 20lgpy77), ISTCP (2015DFE52870), Guangdong Basic and Applied Basic Research Foundation (No. 2019A1515110436), and Guangdong Province International Scientific and Technological Cooperation Projects (2020A0505100036). The S/TEM work was performed at the Nanostructure Research Centre (NRC), which is supported by the Fundamental Research Funds for the Central Universities (WUT: 2019III012GX).
Glasgow Author(s) Enlighten ID:Symes, Professor Mark
Authors: Xiao, Y.-X., Ying, J., Tian, G., Yang, X., Zhang, Y.-X., Chen, J.-B., Wang, Y., Symes, M. D., Ozoemena, K. I., Wu, J., and Yang, X.-Y.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Nano Letters
Publisher:American Chemical Society
ISSN (Online):1530-6992
Published Online:28 July 2021
Copyright Holders:Copyright © 2021 American Chemical Society
First Published:First published in Nano Letters 21(18): 7870-7878
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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