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分子科学研究所

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Research Group Detail

Materials Molecular Science

ONISHI Group


Research Theme

Operando Molecular Science in Liquid–Solid Interfaces of Finite Thickness

Keywords

Reactions at Interfaces, Catalysis, Energy-related Chemistry, Scanning Probes, Optical Spectroscopy


We are proud of our international-compatible studies of liquid–solid interfaces, e.g. photocatalysts for artificial photosynthesis and lubricants for smooth tribology. Characterization with frequency-modulation AFM, time-resolved ATR-IR spectroscopy, soft X-ray absorption, and microelectrode-based amperometry are being developed. We are pleased to collaborate with researchers in academic and industrial organizations to reveal science behind material conversion and energy dissipation at liquid–solid interfaces.

A new era of molecular science at interfaces should be revealed in liquid–solid interfaces of finite thickness (Figure). The molecular interface is the place of reaction where molecules of interest collide with or interact with other molecules. We need to observe individual molecules there. On the other hand, the molecular interface is connected to liquid and solid. Materials and energy come from/to the two condensed phases, since functional interfaces are always open to the environment. In addition, operando characterization is definitely required for investigating the interface in its working state.

 

oh_202111.png

Liquid–Solid Interface of Finite Thickness

Selected Publications

  1. Kosaka, T.; Teduka, Y.; Ogura, T.; Zhou, Y.; Hisatomi, T.; Nishiyama, H.; Domen, K.; Takahashi, Y.; Onishi, H., Transient Kinetics of O2 Evolution in Photocatalytic Water-Splitting Reaction. ACS Catalysis 2020, 10, 13159–13164.
  2. Xue, S.; Sasahara, A.; Onishi, H., Atom-Scale Imaging of TiO2(110) Surface in Water by Frequency-Modulation Atomic Force Microscopy. The Journal of Chemical Physics 2020, 152, 054703 (7 pages).
  3. Moriguchi, S.; Tsujimoto, T.; Sasahara, A.; Kokawa, R.; Onishi, H., Nanometer-Scale Distribution of Lubricant Modifier on Iron Films: A Frequency-Modulation Atomic Force Microscopy Study Combined with Friction Test. ACS Omega 2019, 4, 17593–17599.
  4. Imada, H.; Kimura, K.; Onishi, H., Water and 2-Propanol Structured on Calcite (104) Probed by Frequency-Modulation Atomic Force Microscopy. Langmuir 2013, 29, 10744–10751.

Lab Staff