Single Molecule Investigation of Nanoconfinement Hydrophobicity in Heterogeneous Catalysis

Article abstract of DOI:10.1021/jacs.0c05905

Nanoconfinement imposes physical constraints and chemical effects on reactivity in nanoporous catalyst systems. In the present study, we lay the groundwork for quantitative single-molecule measurements of the effects of chemical environment on heterogeneous catalysis in nanoconfinement. Choosing hydrophobicity as an exemplary chemical environmental factor, we compared a range of essential parameters for an oxidation reaction on platinum nanoparticles (NPs) confined in hydrophilic and hydrophobic nanopores. Single-molecule experimental measurements at the single particle level showed higher catalytic activity, stronger adsorption strength, and higher activation energy in hydrophobic nanopores than those in hydrophilic nanopores. Interestingly, different dissociation kinetic behaviors of the product molecules in the two types of nanopores were deduced from the single-molecule imaging data.

Full text of DOI:10.1021/jacs.0c05905

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Communication
Single Molecule Investigation of Nanoconfinement
Hydrophobicity in Heterogeneous Catalysis
Bin Dong, Nourhan Mansour, Yuchen Pei, Zhuoran Wang, Tengxiang Huang, Seth L
Filbrun, Minda Chen, Xiaodong Cheng, Marek Pruski, Wenyu Huang, and Ning Fang
J. Am. Chem. Soc., Just Accepted Manuscript • DOI: 10.1021/jacs.0c05905 • Publication Date (Web): 20 Jul 2020
Downloaded from pubs.acs.org on July 21, 2020
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ACS Paragon Plus Environment

Journal of the American Chemical Society
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