CO2 controls the oriented growth of metal-organic framework with highly accessible active sites

Fanyu Zhang, Jianling Zhang (), Bingxing Zhang, Lirong Zheng, Xiuyan Cheng, Qiang Wan, Buxing Han and Jing Zhang
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Fanyu Zhang: Institute of Chemistry, Chinese Academy of Sciences
Jianling Zhang: Institute of Chemistry, Chinese Academy of Sciences
Bingxing Zhang: Institute of Chemistry, Chinese Academy of Sciences
Lirong Zheng: Institute of High Energy Physics, Chinese Academy of Sciences
Xiuyan Cheng: Institute of Chemistry, Chinese Academy of Sciences
Qiang Wan: Institute of Chemistry, Chinese Academy of Sciences
Buxing Han: Institute of Chemistry, Chinese Academy of Sciences
Jing Zhang: Institute of High Energy Physics, Chinese Academy of Sciences

Nature Communications, 2020, vol. 11, issue 1, 1-8

Abstract: Abstract The production of 2D metal-organic frameworks (MOFs) with highly exposed active surfaces is of great importance for catalysis. Here we demonstrate the formation of MOF nanosheets by utilizing CO2 as a capping agent to control the oriented growth of MOF. This strategy has many advantages over the conventional methods. For example, it is template-free and proceeds at mild temperature (35 °C), CO2 can be easily removed by depressurization, and the properties of the MOF nanosheets can be well adjusted by changing CO2 pressure. Such a simple, rapid, efficient and adjustable route produces MOF nanosheets with ultrathin thickness (∼10 nm), small lateral size (∼100 nm) and abundant unsaturated coordination metal sites on surfaces. Owing to these unique features, the as-synthesized MOF nanosheets exhibit superior activity for catalyzing the oxidation reactions of alcohols.

Date: 2020
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DOI: 10.1038/s41467-020-15200-4

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