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Unveiling reductant chemistry in fabricating noble metal aerogels for superior oxygen evolution and ethanol oxidation

Author

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  • Ran Du

    (Technische Universität Dresden)

  • Jinying Wang

    (Purdue University)

  • Ying Wang

    (Wenzhou University)

  • René Hübner

    (Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research)

  • Xuelin Fan

    (Technische Universität Dresden)

  • Irena Senkovska

    (Technische Universität Dresden)

  • Yue Hu

    (Wenzhou University)

  • Stefan Kaskel

    (Technische Universität Dresden)

  • Alexander Eychmüller

    (Technische Universität Dresden)

Abstract

Amongst various porous materials, noble metal aerogels attract wide attention due to their concurrently featured catalytic properties and large surface areas. However, insufficient understanding and investigation of key factors (e.g. reductants and ligands) in the fabrication process limits on-target design, impeding material diversity and available applications. Herein, unveiling multiple roles of reductants, we develop an efficient method, i.e. the excessive-reductant-directed gelation strategy. It enables to integrate ligand chemistry for creating gold aerogels with a record-high specific surface area (59.8 m2 g−1), and to expand the composition to all common noble metals. Moreover, we demonstrate impressive electrocatalytic performance of these aerogels for the ethanol oxidation and oxygen evolution reaction, and discover an unconventional organic-ligand-enhancing effect. The present work not only enriches the composition and structural diversity of noble metal aerogels, but also opens up new dimensions for devising efficient electrocatalysts for broad material systems.

Suggested Citation

  • Ran Du & Jinying Wang & Ying Wang & René Hübner & Xuelin Fan & Irena Senkovska & Yue Hu & Stefan Kaskel & Alexander Eychmüller, 2020. "Unveiling reductant chemistry in fabricating noble metal aerogels for superior oxygen evolution and ethanol oxidation," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-15391-w
    DOI: 10.1038/s41467-020-15391-w
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    Cited by:

    1. Yinghao Li & Chun-Kuo Peng & Huimin Hu & San-Yuan Chen & Jin-Ho Choi & Yan-Gu Lin & Jong-Min Lee, 2022. "Interstitial boron-triggered electron-deficient Os aerogels for enhanced pH-universal hydrogen evolution," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Siliu Lyu & Chenxi Guo & Jianing Wang & Zhongjian Li & Bin Yang & Lecheng Lei & Liping Wang & Jianping Xiao & Tao Zhang & Yang Hou, 2022. "Exceptional catalytic activity of oxygen evolution reaction via two-dimensional graphene multilayer confined metal-organic frameworks," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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