文献类型：会议论文

中文题名：A Novel Ammonia Sensor Utilizing Cataluminescence on Nano-TiW3Cr2O14

作者：Kaowen Zhou[1];Ziqiao Zhang[1];Lijing Xing[1];Xin Li[1];Chunxue Fu[1];

第一作者：周考文

机构：[1]Biochemical Engineering College,Beijing Union University,Beijing 100023,China;

第一机构：北京联合大学生物化学工程学院

会议论文集：the international conference on Frontier of Nanoscience and Technology (2011纳米科学与技术国际会议(ICFNST 2011))论文集

会议日期：20110818

会议地点：大理

主办单位：香港控制工程与信息科学协会

语种：英文

中文关键词：Cataluminescence;Ammonia;Gas sensor;Nanosized TiW3Cr2O14

摘要：A new sensor based on cataluminescence (CTL) produced on the surface of nanosized TiW3Cr2O14 was demonstrated for direct determination of ammonia in air.Trace ammonia was firstly absorbed on active carbon at room temperature to concentrate,then desorbed at 105 ℃ to determine.The sensor showed high selectivity to ammonia at wavelength of 540 nm,satisfying activity at temperature of 275 ℃ and good stability at air cartier flow rate of 115 ml/min.The linear range of CTL intensity versus concentration of ammonia was 1.0~50 mg/m3 (γ=0.9990),and the detection limit (3σ) was 0.5 mg/m3.The recovery of artificial sample was 97.45%-102.73% by this method.There was no response to benzene,SO2,CO and formaldehyde,and insignificant response to ethanol.This gas sensor allows on-line monitoring of ammonia in air.