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

页码：38391 / 38398

页数：8

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