Fully exposed Pt clusters for efficient catalysis of multi-step hydrogenation reactions

Yang Si, Yueyue Jiao, Maolin Wang, Shengling Xiang, Jiangyong Diao (), Xiaowen Chen, Jiawei Chen, Yue Wang, Dequan Xiao, Xiaodong Wen, Ning Wang, Ding Ma () and Hongyang Liu ()
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Yang Si: University of Science and Technology of China
Yueyue Jiao: Chinese Academy of Sciences
Maolin Wang: Peking University
Shengling Xiang: Hong Kong University of Science and Technology
Jiangyong Diao: Chinese Academy of Sciences
Xiaowen Chen: University of Science and Technology of China
Jiawei Chen: University of Science and Technology of China
Yue Wang: Chinese Academy of Sciences
Dequan Xiao: University of New Haven
Xiaodong Wen: Chinese Academy of Sciences
Ning Wang: Hong Kong University of Science and Technology
Ding Ma: Peking University
Hongyang Liu: University of Science and Technology of China

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract For di-nitroaromatics hydrogenation, it is a challenge to achieve the multi-step hydrogenation with high activity and selectivity due to the complexity of the process involving two nitro groups. Consequently, many precious metal catalysts suffer from low activity for this multi-step hydrogenation reaction. Herein, we employ a fully exposed Pt clusters catalyst consisting of an average of four Pt atoms on nanodiamond@graphene (Ptn/ND@G), demonstrating excellent catalytic performance for the multi-step hydrogenation of 2,4-dinitrotoluene. The TOF (40647 h−1) of Ptn/ND@G is significantly superior to that of single Pt atoms catalyst, Pt nanoparticles catalyst, and even all the known catalysts. Density functional theory calculations and absorption experiments reveal that the synergetic interaction between the multiple active sites of Ptn/ND@G facilitate the co-adsorption/activation of reactants and H2, as well as the desorption of intermediates/products, which is the key for the higher catalytic activity than single Pt atoms catalyst and Pt nanoparticles catalyst.

Date: 2024
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DOI: 10.1038/s41467-024-49083-6

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