文献类型：会议论文

英文题名：Low Temperature Ammonia Sensor Based on Cataluminescence on Nano-Ti2W3O13

作者：Zhou, Kao-Wen[1];Xu, Ji-Chao[2];Liu, Bai-Ning[1];Peng, Zhao-Kuai[1]

第一作者：周考文

通讯作者：Zhou, KW[1]

机构：[1]Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China;[2]Qingdao Inst Food & Drug Control, Qingdao 266071, Peoples R China

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;

会议论文集：International Conference on Mechanics and Materials Science (MMS)

会议日期：OCT 15-16, 2016

会议地点：Guangzhou, PEOPLES R CHINA

语种：英文

外文关键词：Ammonia; Catluminescence; Low Temperature; Gas Sensor

摘要：A novel gas sensor based on cataluminescence (CTL) on the surface of nanosized Ti2W3O13 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 degrees C to determine. The sensor showed high selectivity to ammonia at wavelength of 540 nm, satisfying activity at temperature of 180 degrees C and good stability at air carrier flow rate of 120 ml/min. The linear range of CTL intensity versus concentration of ammonia was 0.8 similar to 70 mg/m(3) (gamma=0.9991), and the detection limit (3 sigma) was 0.5 mg/m(3). The recovery of artificial sample was 97.4%-102.5% by this method. There was no response to benzene, SO2, CO, ethanol and formaldehyde. This sensor allows on-line monitoring of ammonia in air.