Experimental and theoretical NOx physisorption analyses of mesoporous film (SBA-15 and SBA-16) constructed surface photo voltage (SPV) sensor

Takeo Yamada, Haoshen Zhou, Hidekazu Uchida, Itaru Honma, Teruaki Katsube

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Mesoporous silica films with hexagonal (SBA-15) and cubic (SBA-16) mesostructures have been successfully employed to fabricate surface photo voltage (SPY) sensors for NO2 gas. These SPV sensors exhibited better sensitivity (S) in 50 ppm NO2 gas than in 100 ppm NO gas. SPV with SBA-16 film showed better sensitivity in 1 ppm NO2 gas than in 1 ppm NO gas. These phenomena can be explained by the physical adsorption of the target gas into the mesoporous layer, which is regarded as the insulator layer in metal-insulator-semiconductor (MIS) devices.

Original languageEnglish
Pages (from-to)13341-13346
Number of pages6
JournalJournal of Physical Chemistry B
Volume108
Issue number35
DOIs
Publication statusPublished - 2004 Sep 2
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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