Journal of Hazardous Materials 2015-04-09

Highly sensitive and selective H2 sensing by ZnO nanofibers and the underlying sensing mechanism.

Akash Katoch, Sun-Woo Choi, Hyoun Woo Kim, Sang Sub Kim

文献索引：J. Hazard. Mater. 286 , 229-35, (2015)

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摘要

We report, and propose a mechanism for, the exceptional hydrogen gas (H2) sensing ability of ZnO nanofibers. In comparison to SnO2 nanofibers, ZnO nanofibers show outstanding H2 gas response and unmistakable H2 selectivity. Different from the reducing gas effect observed in SnO2 nanofibers, a semiconductor-to-metal transition that occurs in the presence of H2 gas molecules is responsible for the exceptional response and selectivity of ZnO nanofibers to H2. Notably, the presence of nanograins within nanofibers further intensifies the resistance modulation observed due to this transition. Copyright © 2014 Elsevier B.V. All rights reserved.

相关化合物

  • 乙醇
  • N,N-二甲基甲酰胺
  • 6,6-二甲基联环(3.1...
  • 氯化亚锡

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