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

被引：31
|
作者：
He, Xiaowei [1 ]
Geng, Wangchang [1 ]
Zhang, Baoliang [1 ]
Jia, Lemin [1 ]
Duan, Libing [1 ]
Zhang, Qiuyu [1 ]
机构：
[1] Northwestern Polytech Univ, Minist Educ, Key Lab Space Appl Phys & Chem, Sch Sci, Xian 710072, Peoples R China
来源：
RSC ADVANCES | 2016年 / 6卷 / 44期
基金：
中国国家自然科学基金;
关键词：
COMPOSITE-MATERIALS; THIN-FILMS; PROPERTY; SENSORS; GRAPHENE; OXIDES; TIME;
D O I：
10.1039/c6ra03385g
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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.
引用
收藏
页码：38391 / 38398
页数：8
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