Low-temperature NO2 gas sensor fabricated with NiO and reduced graphene oxide hybrid structure
Low-temperature NO2 gas sensor fabricated with NiO and reduced graphene oxide hybrid structure
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DOI：
10.1016/j.materresbull.2016.08.004
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发表时间：
2016-12-01
影响因子：
5.4
通讯作者：
Hur, Seung Huyn
中科院分区：
文献类型：
--
作者：
Ngo, Yen-Linh Thi;Hur, Seung Huyn
对人体健康危害最大的二氧化氮(NO2)等环境有毒气体的高灵敏度气体传感器的研制，引起了人们极大的关注。本研究采用简单的溶液法制备了一种由还原氧化石墨烯(RGO)和p型NiO层状结构(NiO-rGO)组成的杂化结构。用傅里叶变换红外光谱、拉曼光谱、X射线衍射仪、X射线光电子能谱和扫描电子显微镜对薄膜的形貌和表面性质进行了分析。NiO层次化结构的高表面积体积比以及NiO向rGO的电荷转移增强了NO2的灵敏度。该传感器具有层次化的NiO和rGO混合结构，在低温(100℃)下表现出高的灵敏度和选择性，并具有快速的响应时间。(C)2016爱思唯尔有限公司。保留所有权利。
The fabrication of highly sensitive gas sensors that can monitor environmental toxic gases, such as nitrogen dioxide (NO2), which is one the most harmful gases to human health, attracts considerable attention. In this study, a hybrid structure composed of reduced graphene oxide (rGO) and a p-type NiO hierarchical structure (NiO-rGO) is fabricated using a facile solution process. The morphology and surface properties are analyzed by Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and scanning electron microscopy. The NO2 sensitivity is enhanced by the high surface to volume ratio of the NiO hierarchical structures as well as the enhanced charge transfer of NiO to rGO. The fabricated sensor with a hierarchical NiO and rGO hybrid structure exhibiting high sensitivity and selectivity at a low temperature (100 degrees C) with a rapid response time. (C) 2016 Elsevier Ltd. All rights reserved.