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Deciphering nanoconfinement effects on molecular orientation and reaction intermediate by single molecule imaging

Author

Listed:
  • Bin Dong

    (Georgia State University)

  • Yuchen Pei

    (Iowa State University, and Ames Laboratory, U.S. Department of Energy)

  • Nourhan Mansour

    (Georgia State University)

  • Xuemei Lu

    (Soochow University)

  • Kai Yang

    (Soochow University)

  • Wenyu Huang

    (Iowa State University, and Ames Laboratory, U.S. Department of Energy)

  • Ning Fang

    (Georgia State University)

Abstract

Nanoconfinement could dramatically change molecular transport and reaction kinetics in heterogeneous catalysis. Here we specifically design a core-shell nanocatalyst with aligned linear nanopores for single-molecule studies of the nanoconfinement effects. The quantitative single-molecule measurements reveal unusual lower adsorption strength and higher catalytic activity on the confined metal reaction centres within the nanoporous structure. More surprisingly, the nanoconfinement effects on enhanced catalytic activity are larger for catalysts with longer and narrower nanopores. Experimental evidences, including molecular orientation, activation energy, and intermediate reactive species, have been gathered to provide a molecular level explanation on how the nanoconfinement effects enhance the catalyst activity, which is essential for the rational design of highly-efficient catalysts.

Suggested Citation

  • Bin Dong & Yuchen Pei & Nourhan Mansour & Xuemei Lu & Kai Yang & Wenyu Huang & Ning Fang, 2019. "Deciphering nanoconfinement effects on molecular orientation and reaction intermediate by single molecule imaging," Nature Communications, Nature, vol. 10(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-12799-x
    DOI: 10.1038/s41467-019-12799-x
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    Cited by:

    1. Tanmoy Maity & Susmita Sarkar & Susmita Kundu & Suvendu Panda & Arighna Sarkar & Raheel Hammad & Kalyaneswar Mandal & Soumya Ghosh & Jagannath Mondal & Ritesh Haldar, 2024. "Steering diffusion selectivity of chemical isomers within aligned nanochannels of metal-organic framework thin film," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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