刘迪,唐子龙,张中太.基于SnO2中空纳米球的低温氢气传感器的研究[J].稀有金属材料与工程,2020,49(2):723~727.[Di Liu,Zilong Tang,Zhongtai Zhang.Low operating temperature ethanol sensor based on SnO2 hollow nanospheres[J].Rare Metal Materials and Engineering,2020,49(2):723~727.]
基于SnO2中空纳米球的低温氢气传感器的研究
投稿时间:2019-03-11  修订日期:2019-08-03
中文关键词:  SnO2  中空结构  氢气  气体传感器
基金项目:国家“973”项目 (2013CB934301)
中文摘要:
      采用简单的水热法一步合成SnO2纳米材料,采用XRD、SEM、TEM和氮吸附-脱附对材料的结构和形貌进行表征。研究结果表明所制备SnO2纳米材料是由直径150-200 nm的中空纳米球组成,且具有较大比表面积(82.6 m2/g)。采用丝网印刷技术将SnO2气敏浆料涂覆到叉指电极上,制成厚膜型气体传感器器件,研究其对氢气的气敏性能。结果表明SnO2中空纳米球在较低温度(200 oC)下对5至200 ppm氢气具有较高的响应值及较快的响应速度,这归因于所制备的SnO2材料的中空结构和较大比表面积,利于氢气气体的吸附与扩散。
Low operating temperature ethanol sensor based on SnO2 hollow nanospheres
英文关键词:SnO2  hollow structure  hydrogen  gas sensor
英文摘要:
      SnO2 nanomaterial was synthesized by a simple one-step hydrothermal method and the structure and morphology of the material was characterized by XRD, SEM, TEM and nitrogen adsorption-desorption. The results showed that the prepared SnO2 nanomaterial was composed of hollow nanospheres with a diameter of 150-200 nm and had a large specific surface area (82.6 m2/g). The SnO2 gas sensitive paste was applied to the interdigital electrode by screen printing technology to form thick film gas sensing elements, and the gas sensing properties of the elements toward hydrogen were studied. The results showed that SnO2 hollow nanospheres had high response value and fast response speed to hydrogen ranging from 5 to 200 ppm at a low temperature (200 oC). This is attributed to the hollow structure and large specific surface area of the prepared SnO2 material, which facilitates the adsorption and diffusion of hydrogen gas.
作者单位E-mail
刘迪 清华大学 材料学院 新型陶瓷与精细工艺国家重点实验室 liudi15@mails.tsinghua.edu.cn 
唐子龙 清华大学 材料学院 新型陶瓷与精细工艺国家重点实验室 tzl@mail.tsinghua.edu.cn 
张中太 清华大学 材料学院 新型陶瓷与精细工艺国家重点实验室 zzt@mail.tsinghua.edu.cn 
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