Mesoporous Silica Modified by Poly(Ionic Liquid)s for Low-Humidity Sensing

被引：1

作者：

Ma, Zhiyan ^{[1
]}

Song, Yaping ^{[1
]}

Zhao, Hongran ^{[1
]}

Liu, Sen ^{[1
]}

Yang, Xi ^{[2
]}

Fei, Teng ^{[1
]}

Zhang, Tong ^{[1
]}

机构：

[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China

[2] China Acad Engn Phys, Inst Chem Mat, Mianyang 621000, Sichuan, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2024年 / 24卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Low-humidity sensing; mesoporous silica; poly(ionic liquid)s (PILs); SiO2@PIL composite materials; TRACE MOISTURE; MAGNETIC NANOPARTICLES; RELATIVE-HUMIDITY; IONIC LIQUID; SENSOR; PERFORMANCE; SURFACE; MCM-41; NANOCOMPOSITE; CONDUCTIVITY;

D O I：

10.1109/JSEN.2024.3373030

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this study, imidazole-based poly(ionic liquid)s (PILs) are introduced into acid-treated mesoporous silica by solid grinding and subsequent thermal polymerization methods. The purpose of treating mesoporous silica with hydrochloric acid is to increase the number of hydroxyl groups on the surface to fix more PILs. Because of the synergism of enhanced hydrophilicity and the mesoporous structure, the synthesized composite materials exhibited excellent capacities to adsorb and transport water vapor molecules and are suitable for low-humidity sensing applications. In the 7%-33% relative humidity (RH) range, the response of the as-prepared sensor reached 806% with a short response/recovery time of 8/13 s.

引用

页码：12042 / 12049

页数：8

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