A stable low-temperature H2-production catalyst by crowding Pt on α-MoC

Xiao Zhang, Mengtao Zhang, Yuchen Deng, Mingquan Xu, Luca Artiglia, Wen Wen, Rui Gao, Bingbing Chen, Siyu Yao, Xiaochen Zhang, Mi Peng, Jie Yan, Aowen Li, Zheng Jiang, Xingyu Gao, Sufeng Cao, Ce Yang, A. Jeremy Kropf, Jinan Shi, Jinglin Xie, Mingshu Bi, Jeroen A. Bokhoven, Yong-Wang Li, Xiaodong Wen, Maria Flytzani-Stephanopoulos, Chuan Shi (), Wu Zhou () and Ding Ma ()
Additional contact information
Xiao Zhang: Peking University
Mengtao Zhang: Peking University
Yuchen Deng: Peking University
Mingquan Xu: University of Chinese Academy of Sciences
Luca Artiglia: Paul Scherrer Institute
Wen Wen: Chinese Academy of Sciences
Rui Gao: Beijing Advanced Innovation Center for Materials Genome Engineering
Bingbing Chen: Dalian University of Technology
Siyu Yao: Zhejiang University
Xiaochen Zhang: Peking University
Mi Peng: Peking University
Jie Yan: Peking University
Aowen Li: University of Chinese Academy of Sciences
Zheng Jiang: Chinese Academy of Sciences
Xingyu Gao: Chinese Academy of Sciences
Sufeng Cao: Tufts University
Ce Yang: Argonne National Laboratory
A. Jeremy Kropf: Argonne National Laboratory
Jinan Shi: University of Chinese Academy of Sciences
Jinglin Xie: Peking University
Mingshu Bi: Dalian University of Technology
Jeroen A. Bokhoven: Paul Scherrer Institute
Yong-Wang Li: Beijing Advanced Innovation Center for Materials Genome Engineering
Xiaodong Wen: Beijing Advanced Innovation Center for Materials Genome Engineering
Maria Flytzani-Stephanopoulos: Tufts University
Chuan Shi: Dalian University of Technology
Wu Zhou: University of Chinese Academy of Sciences
Ding Ma: Peking University

Nature, 2021, vol. 589, issue 7842, 396-401

Abstract: Abstract The water–gas shift (WGS) reaction is an industrially important source of pure hydrogen (H2) at the expense of carbon monoxide and water1,2. This reaction is of interest for fuel-cell applications, but requires WGS catalysts that are durable and highly active at low temperatures3. Here we demonstrate that the structure (Pt1–Ptn)/α-MoC, where isolated platinum atoms (Pt1) and subnanometre platinum clusters (Ptn) are stabilized on α-molybdenum carbide (α-MoC), catalyses the WGS reaction even at 313 kelvin, with a hydrogen-production pathway involving direct carbon monoxide dissociation identified. We find that it is critical to crowd the α-MoC surface with Pt1 and Ptn species, which prevents oxidation of the support that would cause catalyst deactivation, as seen with gold/α-MoC (ref. 4), and gives our system high stability and a high metal-normalized turnover number of 4,300,000 moles of hydrogen per mole of platinum. We anticipate that the strategy demonstrated here will be pivotal for the design of highly active and stable catalysts for effective activation of important molecules such as water and carbon monoxide for energy production.

Date: 2021
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DOI: 10.1038/s41586-020-03130-6

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