文献类型：期刊文献

英文题名：Sensitive carbon monoxide gas sensor based on chemiluminescence on Nano-Au/Nd2O3-Ca3Nd2O6: Working condition optimization by response surface methodology

作者：Zhang W.; Yang F.; Xu J.; Gu C.; Zhou K.

第一作者：Zhang W.

机构：[1]Biochemical Engineering College, Beijing Union University, Beijing, 100023, China;[2]Beijing Key Laboratory of Biomass Waste Resource Utilization, Beijing Union University, Beijing, 100023, China;[3]Qingdao Institute for Food and Drug Control, Qingdao, 266071, China

第一机构：北京联合大学生物化学工程学院

通讯机构：[1]Biochemical Engineering College, Beijing Union University, Beijing, 100023, China;[1]Biochemical Engineering College, Beijing Union University, Beijing, 100023, 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：2020

卷号：5

期号：32

起止页码：20034-20041

外文期刊名：ACS Omega

收录：Scopus(收录号：2-s2.0-85090948058)

语种：英文

摘要：An Au/Nd2O3-Ca3Nd2O6 composite was synthesized by the sol-gel and impregnation method. The EDS spectrum and the transmission electron microscopy image showed that Au atoms are uniformly distributed on the surface of Nd2O3-Ca3Nd2O6 with a size of less than 50 nm. A sensitive carbon monoxide gas sensor based on chemiluminescence at a temperature lower than 200 °C was reported. There is a good linear relationship between the chemiluminescence intensity and the concentration of carbon monoxide in the range of 0.6-125 mg/m3. The detection limit (3σ) is 0.2 mg/m3. The working conditions optimized by the response surface methodology were an analytical wavelength of 620.90 nm, a reaction temperature of 131.63 °C, and a carrier-gas velocity of 105.46 mL/min. The sensitivity of the method can be increased by 4.5% under the optimized working conditions, which is especially important for the determination of trace substances. The carbon monoxide sensor demonstrated in this paper can be used for practical applications. The optimization method is universal for many multiparameter processes. Copyright ? 2020 American Chemical Society.