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A general synthesis approach for amorphous noble metal nanosheets

Open access
Wu, Geng, Zheng, Xusheng, Cui, Peixin, Jiang, Hongyu, Wang, Xiaoqian, Qu, Yunteng, Chen, Wenxing, Lin, Yue, Li, Hai, Han, Xiao, Hu, Yanmin, Liu, Peigen, Zhang, Qinghua, Ge, Jingjie, Yao, Yancai, Sun, Rongbo, Wu, Yuen, Gu, Lin, Hong, Xun, Li, Yadong·2019·Nature Communications
DOI 10.1038/s41467-019-12859-2
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Abstract

Noble metal nanomaterials have been widely used as catalysts. Common techniques for the synthesis of noble metal often result in crystalline nanostructures. The synthesis of amorphous noble metal nanostructures remains a substantial challenge. We present a general route for preparing dozens of different amorphous noble metal nanosheets with thickness less than 10 nm by directly annealing the mixture of metal acetylacetonate and alkali salts. Tuning atom arrangement of the noble metals enables to optimize their catalytic properties. Amorphous Ir nanosheets exhibit a superior performance for oxygen evolution reaction under acidic media, achieving 2.5-fold, 17.6-fold improvement in mass activity (at 1.53 V vs. reversible hydrogen electrode) over crystalline Ir nanosheets and commercial IrO 2 catalyst, respectively. In situ X-ray absorption fine structure spectra indicate the valance state of Ir increased to less than + 4 during the oxygen evolution reaction process and recover to its initial state after the reaction.

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Metadata

Authors
Wu, G., Zheng, X., Cui, P., Jiang, H., Wang, X., Qu, Y., Chen, W., Lin, Y., Li, H., Han, X., Hu, Y., Liu, P., Zhang, Q., Ge, J., Yao, Y., Sun, R., Wu, Y., Gu, L., Hong, X., & Li, Y.
Venue
Nature Communications
Publisher
Springer Science and Business Media LLC
Published
2019-10-24
Volume
10
Issue
1
Pages
4855-4855
ISSN
2041-1723 (ISSN-L)
DOI
10.1038/s41467-019-12859-2
OpenAlex
W2981616034
Cited by
539
References
6
FWCI
10.10
Type
journal article
Language
en
Open access
gold
Licence
Funders
  • National Natural Science Foundation of China (21571169, 21871238)
  • Youth Innovation Promotion Association of the Chinese Academy of Sciences (2018494)

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CoChat. (2026). Citation check: A general synthesis approach for amorphous noble metal nanosheets. https://app.cochat.ai/papers/10.1038/s41467-019-12859-2
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Wu, G., Zheng, X., Cui, P., Jiang, H., Wang, X., Qu, Y., Chen, W., Lin, Y., Li, H., Han, X., Hu, Y., Liu, P., Zhang, Q., Ge, J., Yao, Y., Sun, R., Wu, Y., Gu, L., Hong, X., & Li, Y. (2019). A general synthesis approach for amorphous noble metal nanosheets. Nature Communications. https://doi.org/10.1038/s41467-019-12859-2

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