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Research Article

Determining the contribution of Mo single atoms components in MoO2 nanocatalyst in transfer hydrogenation

Ze-Nan Hu1,2, Yongjian Ai3, Yan Zhao4, Yiming Wang2, Kelong Ding2, Wenhui Zhang2, Rongxiu Guo2, Xinyue Zhang2, Xiangbin Cai5, Ning Wang5, Jianshe Hu2, Qionglin Liang3, Hongyang Liu6, Fei Huang6( ), Limin Wu4, Jiangwei Zhang4( ), Hong-bin Sun2( )
School of Environmental Engineering and Chemistry, Luoyang Institute of Science and Technology, Luoyang 471023, China
Department of Chemistry, Northeastern University, Shenyang 110819, China
MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Beijing Key Lab of Microanalytical Methods & Instrumentation, Department of Chemistry, Center for Synthetic and Systems Biology, Tsinghua University, Beijing 100084, China
College of Energy Material and Chemistry, Inner Mongolia University, Hohhot 010021, China
Department of Physics and Center for Quantum Materials, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
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Graphical Abstract

This work reports a noble metal-like catalyst composed of Mo single atoms (SAs) and MoO2 nanoparticles (NPs) (MoSAs-MoO2@NC), which is an exact model to understand how the SAs contribute to the nanocatalyst. Mo SAs on nitrogen-doped carbon provides the reaction zone for nitro reduction, and MoO2 is the active site for decomposing hydrazine hydrate to produce H*.

Abstract

Nanocatalysts are likely to contain undetected single-atom components, which may have been ignored but have significant effect in catalytic reactions. Herein, we report a catalyst composed of Mo single atoms (SAs) and MoO2 nanoparticles (NPs) (MoSAs-MoO2@NC), which is an exact model to understand how the SAs contribute to the nanocatalyst. Both experimental results and the density functional theory calculations reveal that Mo SAs on nitrogen-doped carbon provides the reaction zone for nitro reduction, while MoO2 is the active site for decomposing hydrazine hydrate to produce H*. Thanks to the synergy between Mo SAs and MoO2 NPs, this catalyst exhibits noble metal-like catalytic activity (100% conversion at 4 min) for the dechlorination-proof transfer hydrogenation. Additionally, the hydrogen migration on the catalyst is verified by the electrochemical tests in the absence of a hydrogen source. This work provides a model for further study on the coexistence of single atoms in nanoparticle catalysts.

Keywords

synergistic effectMo single atomsMoO2 nanocatalysttransfer hydrogenationnitroarenes

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Nano Research
Volume 16 Issue 2,
February 2023
Pages 2302-2310
DOI: 10.1007/s12274-022-5277-3
Cite this article:
Hu Z-N, Ai Y, Zhao Y, et al. Determining the contribution of Mo single atoms components in MoO2 nanocatalyst in transfer hydrogenation. Nano Research, 2023, 16(2): 2302-2310. https://doi.org/10.1007/s12274-022-5277-3
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Received: 27 October 2022
Accepted: 28 October 2022
Published: 27 October 2022
© Tsinghua University Press 2022
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