Development of microstructure CO sensor based on hierarchically porous ZnO nanosheet thin films
Development of microstructure CO sensor based on hierarchically porous ZnO nanosheet thin films
复制标题
基于分级多孔ZnO纳米片薄膜的微结构CO传感器的研制
DOI：
10.1016/j.snb.2012.05.090
复制
发表时间：
2012-10-01
影响因子：
8.4
通讯作者：
Zou, Guangtian
中科院分区：
文献类型：
--
作者：
Zeng, Yi;Qiao, Liang;Zou, Guangtian
采用简单的两步液相法制备了一种基于多级多孔ZnO纳米片（NS）薄膜的微结构传感器。覆盖在导电电极和绝缘SiO2间隔区上的透明ZnO种子层充当晶格匹配模板，随后通过简单的溶剂热过程在其上完成ZnO NS薄膜的组装。对所制备的纳米结构的相纯度、形貌和结构进行了研究，结果表明，垂直生长在衬底上的ZnO纳米结构具有多级多孔纳米结构。在300 ℃的工作温度下，该气敏元件不仅对CO气体有很高的响应，响应时间为25s，而且对常见干扰气体有很低的交叉响应。(C)2012爱思唯尔有限公司版权所有。
A microstructure sensor based on hierarchically porous ZnO nanosheet (NS) thin films has been achieved by using a facile two-step solution phase method. The transparent ZnO seed-layer covered on both the conducting electrodes and the insulating SiO2 spacer regions acts as lattice-matched template, on which the assembly of ZnO NS thin films has been subsequently completed via a facile solvothermal process. The phase purity, morphology, and structure of the as-prepared NSs are investigated, and the results reveal that ZnO NSs, grown vertically on the substrate, exhibit hierarchically porous nanostructure with subunits of nanoparticles. The gas-sensing properties exhibit not only high response to CO with the response time of 25s, but also low cross response to common interference gases at the operating temperature of 300 degrees C. (C) 2012 Elsevier B.V. All rights reserved.