文献类型：期刊文献

中文题名：基于纳米复合氧化物催化发光的乙醇传感器

英文题名：A Gaseous Ethanol Sensor Based on Cataluminescence on Nanometer Composite Oxide

作者：周考文[1];张鹏[1];陈魏[1]

第一作者：周考文

通讯作者：Zhou, KW[1]

机构：[1]北京联合大学生物化学工程学院

第一机构：北京联合大学生物化学工程学院

通讯机构：[1]corresponding author), Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China.|[1141726]北京联合大学生物化学工程学院;[11417]北京联合大学;

年份：2010

期号：9

起止页码：921-925

中文期刊名：化学学报

外文期刊名：Acta Chimica Sinica

收录：CSTPCD;;Scopus(收录号：2-s2.0-79952831677);WOS:【SCI-EXPANDED(收录号:WOS:000278126200015)】；北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：北京市教委科技发展计划(No.KM200711417005);2008年北京市"人才强教计划"资助项目

语种：中文

中文关键词：乙醇;催化发光;纳米复合氧化物;传感器

外文关键词：ethanol; cataluminescence; nanometer composite oxide; sensor

摘要：基于纳米材料上乙醇的催化发光现象,建立了直接测定空气中乙醇浓度的方法.实验发现,乙醇在纳米级钛锆镧(原子比为5∶2∶1)复合氧化物表面有较高的发光强度和较好的选择性,以此为敏感材料可以建立一种高效稳定的乙醇气体传感器,其最佳操作条件为:分析波长620nm,测定温度310℃,载气流速130mL/min.方法的检测限为(3σ)1.3mg/m3,线性范围为2～230mg/m3,相关系数为0.9990,回收率为97.4%～102.7%.对常见共存物的研究发现,甲醛、丙酮、苯、氨、二氧化硫和二氧化碳都不干扰测定,该传感器的连续工作时间可达120h以上.
An efficient, steady method based on cataluminescence （CTL） generated on the surface of a nanometer composite oxide was proposed for direct determination of ethanol in air. The gas sensor using nano-TiO2-ZrO2-La2O3 （Ti∶Zr∶La=5∶2∶1） as a probe showed high selectivity for ethanol at a wavelength of 620 nm and satisfying activity at the surface temperature of 310 ℃. The optimum flow rate of air carrier was around 130 mL/min. The detection limit of this method was 1.3 mg/m^3. The linear range of CTL intensity versus concentration of ethanol was 2～230 mg/m^3, and the correlation coefficient was 0.9990. The recovery of 10 testing standard ethanol samples by this method was 97.4%～102.7%. Common coexistence matters, such as formaldehyde, acetone, benzene, ammonia, sulfur dioxide and carbon dioxide, did not disturb the determination of ethanol. The gas sensor displayed good stability for continuously introducing ethanol over 120 h.