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Two distinctive energy migration pathways of monolayer molecules on metal nanoparticle surfaces

Author

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  • Jiebo Li

    (College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences, Peking University
    Rice University, 6100 Main Street, Houston, Texas 77005, USA)

  • Huifeng Qian

    (Rice University, 6100 Main Street, Houston, Texas 77005, USA)

  • Hailong Chen

    (Rice University, 6100 Main Street, Houston, Texas 77005, USA)

  • Zhun Zhao

    (Rice University, 6100 Main Street, Houston, Texas 77005, USA)

  • Kaijun Yuan

    (State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of the Chemical Physics, Chinese Academy of Sciences)

  • Guangxu Chen

    (College of Chemistry and Chemical Engineering, Xiamen University)

  • Andrea Miranda

    (Rice University, 6100 Main Street, Houston, Texas 77005, USA)

  • Xunmin Guo

    (Rice University, 6100 Main Street, Houston, Texas 77005, USA)

  • Yajing Chen

    (State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of the Chemical Physics, Chinese Academy of Sciences)

  • Nanfeng Zheng

    (College of Chemistry and Chemical Engineering, Xiamen University)

  • Michael S. Wong

    (Rice University, 6100 Main Street, Houston, Texas 77005, USA
    Rice University, 6100 Main Street, Houston, Texas 77005, USA)

  • Junrong Zheng

    (College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences, Peking University
    Rice University, 6100 Main Street, Houston, Texas 77005, USA)

Abstract

Energy migrations at metal nanomaterial surfaces are fundamentally important to heterogeneous reactions. Here we report two distinctive energy migration pathways of monolayer adsorbate molecules on differently sized metal nanoparticle surfaces investigated with ultrafast vibrational spectroscopy. On a 5 nm platinum particle, within a few picoseconds the vibrational energy of a carbon monoxide adsorbate rapidly dissipates into the particle through electron/hole pair excitations, generating heat that quickly migrates on surface. In contrast, the lack of vibration-electron coupling on approximately 1 nm particles results in vibrational energy migration among adsorbates that occurs on a twenty times slower timescale. Further investigations reveal that the rapid carbon monoxide energy relaxation is also affected by the adsorption sites and the nature of the metal but to a lesser extent. These findings reflect the dependence of electron/vibration coupling on the metallic nature, size and surface site of nanoparticles and its significance in mediating energy relaxations and migrations on nanoparticle surfaces.

Suggested Citation

  • Jiebo Li & Huifeng Qian & Hailong Chen & Zhun Zhao & Kaijun Yuan & Guangxu Chen & Andrea Miranda & Xunmin Guo & Yajing Chen & Nanfeng Zheng & Michael S. Wong & Junrong Zheng, 2016. "Two distinctive energy migration pathways of monolayer molecules on metal nanoparticle surfaces," Nature Communications, Nature, vol. 7(1), pages 1-8, April.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms10749
    DOI: 10.1038/ncomms10749
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    Cited by:

    1. Qi Zhang & Wei Li & Ruixuan Zhao & Peizhe Tang & Jie Zhao & Guorong Wu & Xin Chen & Mingjun Hu & Kaijun Yuan & Jiebo Li & Xueming Yang, 2024. "Real-time observation of two distinctive non-thermalized hot electron dynamics at MXene/molecule interfaces," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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