期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 248, 期 -, 页码 803-811出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.11.104
关键词
Humidity sensor; Mesoporous silica; Free radical polymerization; Organic-inorganic hybrid materials
资金
- Natural Science Foundation Committee (NSFC) [51103053]
- Projects of Science and Technology Development Plan of Jilin Province [20160520093JH]
- Program from Changjiang Scholars and Innovativation Research Team in University [IRT13018]
Mesoporous silicas loading hydrophilic materials composites were widely used in humidity sensors during the last decade. However, the physical mixing process used for loading the hydrophilic materials in the channel of mesoporous silicas is hard to guarantee their uniform dispersion, and there is no strong force to bind the host and guest materials together. To solve above problems, novel vinyl functionalized mesoporous silicas (SBA-15-vinyl) were chemically modified with hydrophilic sodium p-styrenesulfonate (SSS) with free radical polymerization. The chemical and porous structures of the obtained hybrid materials (SBA-15-PSSx) were characterized by fourier transform infrared spectroscopy (FT-IR), elemental analyses (EA), X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM) and N-2 adsorption-desorption. The humidity sensing properties of the sensors based on SBA-15-vinyl and SBA-15-PSS indicate the introduction of PSS could effectively enhance the sensing properties of SBA-15-vinyl. The impedance of the optimized sensor changed by more than three orders of magnitude over the relative humidity (RH) range of 11%-95%, with rapid response to RH change. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据