您的位置:首页  > 论文页面

Zn2SnO4-ZnO微米线的优化制备与氢气气敏特性

发表时间:2018-09-30  浏览量:105  下载量:24
全部作者: 朱丽佳,卢瑞,郦瀚森,沈岩柏
作者单位: 东北大学资源与土木工程学院
摘 要: 以SnO2、ZnO及活性炭的混合物为原料,镀金Si片为基板,采用碳热还原蒸发法优化制备Zn2SnO4-ZnO复合气敏材料。结构表征结果表明,反应温度为1 000℃、反应时间为1 h、原料物质的量配比为SnO2:ZnO:C=2:1:4、O2/Ar气体体积配比为3%,是获得结晶好、长径比高、产量大的Zn2SnO4-ZnO复合材料的最佳制备条件。气敏特性结果表明,Zn2SnO4-ZnO复合材料对H2表现出优良的气体响应-恢复特性,且响应和恢复时间较短;在工作温度为300℃时可获得对H2的最大灵敏度;随着H2浓度的增加,Zn2SnO4-ZnO复合材料对其灵敏度呈线性上升趋势。
关 键 词: 无机非金属材料;气体传感器;热蒸发;Zn2SnO4-ZnO;H2
Title: Optimal synthesis and H2 sensing property of Zn2SnO4-ZnO microwires
Author: ZHU Lijia, LU Rui, LI Hansen, SHEN Yanbai
Organization: School of Resources and Civil Engineering, Northeastern University
Abstract: Zn2SnO4-ZnO gas-sensing composites were synthesized by carbon thermal reduction evaporation method, where the mixture of SnO2, ZnO and active carbon powders were used as the source material, and Au-coated Si chips were used as the substrates. Microstructural characterization results showed that Zn2SnO4-ZnO composites with good crystallinity, large length-to-diameter ratio, and high yield were obtained under the optimal conditions of reaction temperature of 1 000℃, reaction time of 1 h, SnO2, ZnO and C with the molar ratio of 2:1:4, and O2/Ar with volume ratio of 3%. Gas-sensing properties demonstrated that Zn2SnO4-ZnO composites showed significant H2 sensing properties with short response and recovery times. The highest response of Zn2SnO4-ZnO composites to H2 was found at an operating temperature of 300℃. The response of Zn2SnO4-ZnO composites to H2 increased linearly with increasing H2 concentrations.
Key words: inorganic nonmetallic materials; gas sensor; thermal evaporation; Zn2SnO4-ZnO; H2
发表期数: 2018年9月第18期
引用格式: 朱丽佳,卢瑞,郦瀚森,等. Zn2SnO4-ZnO微米线的优化制备与氢气气敏特性[J]. 中国科技论文在线精品论文,2018,11(18):1814-1822.
 
0 评论数 0
暂无评论
友情链接