Research Article


2021, 14(5): 1287–1293


Isolated atomic catalysts encapsulated in MOF for ultrafast water pollutant treatment

Shuailong Guo1,§, Hao Yuan1,§, Wei Luo3, Xiaoqing Liu4, Xiantao Zhang3, Haoqing Jiang1,2 (✉), Feng Liu1,3 (✉), and Gary J. Cheng2 (✉)

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1 The Institute of Technological Sciences, Wuhan University, Wuhan 430072, China
2 Birck Nanotechnology Centre, School of Industrial Engineering, Purdue University, West Lafayette, IN 47906, USA
3 School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China
4 Center for materials research and analysis, Wuhan University of Technology, Wuhan 430072, China
§ Shuailong Guo and Hao Yuan contributed equally to this work.

Keywords: atomic catalysts, metal-organic framework, reduction of 4-nitrophenol, porous
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Atomic noble metals stand as one of the most advanced catalysts because of their unique properties and interaction with the reactants. However, due to their high activity, noble atomic catalysts tend to aggregate and deactivate in practical application. Moreover, supports aimed to disperse these atomic catalysts often suffer from weak confinement and poor porosity, thus limited the catalytic efficiency of noble atoms. Here, we report the facile encapsulation of atomic noble catalyst in cheap cerous metal-organic framework (Ce-MOF) crystals to create a robust catalyst that could deliver high catalytic performance for the reduction of 4-nitrophenol without decay in long-term cycling test. Specifically, Au atoms encapsulated in Ce-MOF exhibited ultrahigh turnover frequency (TOF) of 131 min−1 for the reduction of 4-nitrophenol in minutes, consuming only 10% precious metals compared with state-of-the-art catalysts operated under same condition.
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Isolated atomic catalysts encapsulated in MOF for ultrafast water pollutant treatment. Nano Res. 2021, 14(5): 1287–1293

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