In situ high-resolution transmission electron microscopy of photocatalytic reactions by excited electrons in ionic liquid

Kenta Yoshida, Tsutomu Nozaki, Tsukasa Hirayama, Nobuo Tanaka

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

A transmission electron microscope (TEM) sample for observing photocatalysis in a liquid was prepared by using N,N,N-trimetyl-N- propylammonium-bis(trifluoromethanesulfonyl)imide. The ionic liquid (IL) was used as a reaction solvent. Tetrachloroauric acid was dissolved in the IL as gold ion species. Rutile particles were added in the solution as a photocatalyst. The low vapor pressure of the IL enables a diffusing system in high vacuum of TEM. Rutile particles were UV irradiated in that liquid phase. After 3 h UV irradiation, a gold particle of 8 nm diameter was grown on the TiO2 surface. Photonucleation of Au/TiO2 system was discussed from the high-resolution TEM images.

Original languageEnglish
Pages (from-to)177-180
Number of pages4
JournalJournal of Electron Microscopy
Volume56
Issue number5
DOIs
Publication statusPublished - 2007 Oct 1
Externally publishedYes

Keywords

  • In-situ
  • Ionic liquid
  • Photocatalyst
  • TEM

ASJC Scopus subject areas

  • Instrumentation

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