Ultrahigh humidity sensitivity of NaCl-added 3D mesoporous silica KIT-6 and its sensing mechanism

Xiaowei He, Wangchang Geng, Baoliang Zhang, Lemin Jia, Libing Duan, Qiuyu Zhang

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

Mesoporous silica KIT-6 was synthesized by a hydrothermal method and NaCl-added KIT-6 was prepared by a facile grind method. Compared with pure KIT-6, NaCl-added KIT-6 showed greatly improved humidity sensitivity. The impedance changed by more than five orders of magnitude over the whole humidity range (11-95% RH). The response time was about 47 s. Complex impedance spectra were also provided and discussed in detail to explore the humidity sensing mechanism of NaCl-added KIT-6.

Original languageEnglish
Pages (from-to)38391-38398
Number of pages8
JournalRSC Advances
Volume6
Issue number44
DOIs
StatePublished - 2016

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