1D ZnO nano-assemblies by Plasma-CVD as chemical sensors for flammable and toxic gases
1D ZnO nano-assemblies by Plasma-CVD as chemical sensors for flammable and toxic gases
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DOI：
10.1016/j.snb.2010.06.048
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发表时间：
2010-08-06
影响因子：
8.4
通讯作者：
Tondello, Eugenio
中科院分区：
文献类型：
--
作者：
Barreca, Davide;Bekermann, Daniela;Tondello, Eugenio
采用等离子体增强化学气相沉积（PE-CVD）法在Al 2 O3衬底上制备了一维ZnO纳米组装体，并利用场发射扫描电子显微镜（FE-SEM）、能量色散X射线能谱（EDXS）和X射线光电子能谱（XPS）对其形貌和化学组成进行了表征。首次测试了PE-CVD ZnO纳米系统在有毒/可燃气体（CO，H-2和CH 4）检测中的传感性能，在中等工作温度下已经显示出非常好的响应。特别是，一氧化碳和氢的检测已经可以在100摄氏度。而甲烷检测需要200摄氏度的最低温度。目前的ZnO纳米系统，使他们有吸引力的候选人的技术应用的性能，提出和讨论，在其独特的和可控的形态组织。(C)2010爱思唯尔有限公司版权所有。
In this work, 1D ZnO nano-assemblies were prepared on Al2O3 substrates by plasma enhanced-chemical vapor deposition (PE-CVD), and characterized in their morphology and chemical composition by field emission-scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDXS) and X-ray photoelectron spectroscopy (XPS). For the first time, the sensing performances of PE-CVD ZnO nanosystems were tested in the detection of toxic/combustible gases (CO, H-2 and CH4), revealing very good responses already at moderate working temperatures. In particular, carbon monoxide and hydrogen detection was possible already at 100 degrees C. whereas methane sensing required a minimum temperature of 200 degrees C. The performances of the present ZnO nanosystems, that make them attractive candidates for technological applications, are presented and discussed in terms of their unique and controllable morphological organization. (C) 2010 Elsevier B.V. All rights reserved.