Recent progress in scanning electron microscopy for the characterization of fine structural details of nano materials

Mitsuo Suga, Shunsuke Asahina, Yusuke Sakuda, Hiroyoshi Kazumori, Hidetoshi Nishiyama, Takeshi Nokuo, Viveka Alfredsson, Tomas Kjellman, Sam M. Stevens, Hae Sung Cho, Minhyung Cho, Lu Han, Shunai Che, Michael W. Anderson, Ferdi Schüth, Hexiang Deng, Omar M. Yaghi, Zheng Liu, Hu Young Jeong, Andreas SteinKazuyuki Sakamoto, Ryong Ryoo, Osamu Terasaki

Research output: Contribution to journalReview articlepeer-review

70 Scopus citations

Abstract

Research concerning nano-materials (metal-organic frameworks (MOFs), zeolites, mesoporous silicas, etc.) and the nano-scale, including potential barriers for the particulates to diffusion to/from is of increasing importance to the understanding of the catalytic utility of porous materials when combined with any potential super structures (such as hierarchically porous materials). However, it is difficult to characterize the structure of for example MOFs via X-ray powder diffraction because of the serious overlapping of reflections caused by their large unit cells, and it is also difficult to directly observe the opening of surface pores using ordinary methods. Electron-microscopic methods including high-resolution scanning electron microscopy (HRSEM) have therefore become imperative for the above challenges. Here, we present the theory and practical application of recent advances such as through-the-lens detection systems, which permit a reduced landing energy and the selection of high-resolution, topographically specific emitted electrons, even from electrically insulating nano-materials.

Original languageEnglish (US)
Pages (from-to)1-21
Number of pages21
JournalProgress in Solid State Chemistry
Volume42
Issue number1-2
DOIs
StatePublished - May 2014

Keywords

  • Atmospheric SEM
  • Mesoporous materials
  • Metal-organic frameworks
  • Nano-materials
  • Scanning electron microscopy
  • Through-the-lens detection system

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