文献类型：期刊文献

英文题名：Determination of formaldehyde using a novel Pt-doped nano-sized sensitive material: Operating conditions optimization by response surface method

作者：Yang, Fuxiu[1];Zhang, Wenjuan[1];Wang, Hong[1];Gu, Chunxiu[1,2];Lu, Yun[3];Zhou, Kaowen[1,2]

第一作者：Yang, Fuxiu

通讯作者：Gu, CX[1];Zhou, KW[1]

机构：[1]Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China;[2]Beijing Key Lab Biomass Waste Resource Utilizat, Beijing 100023, Peoples R China;[3]Chiba Univ, Grad Sch Sci & Engn, Chiba 2638522, Japan

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：2020

卷号：1132

起止页码：47-54

外文期刊名：ANALYTICA CHIMICA ACTA

收录：;EI(收录号：20203309050417);Scopus(收录号：2-s2.0-85089270956);WOS:【SCI-EXPANDED(收录号:WOS:000579365700006)】；

基金：This work was supported by Beijing Natural Science Foundation (Grant No.2152013), Science and Technology Innovation Project for University Students of Beijing Union University (201911417XJ262) and Postgraduate Funding Project of Beijing Union University (2019-068).

语种：英文

外文关键词：Formaldehyde; Chemiluminescence; Low temperature; Sensitive material; Response surface method

摘要：High working temperature is the main obstacle in the design of chemiluminescence gas sensor. In this paper, a novel formaldehyde gas sensor based on chemiluminescence on nano-Pt/Mo4V6Ti10O47 at lower temperature than 200 degrees C was reported. Formaldehyde can be oxidized on the catalyst and emit chemiluminescence of specific wavelength. The relative standard deviation (RSD) of the chemiluminescence intensities within 600 h by continually introducing 20 mg/m(3) formaldehyde is less than 3%. There is a good linear relationship between the chemiluminescence intensity and the concentration of formaldehyde in the range of 0.007-77.0 mg/m(3). The limit of detection (3 sigma) is 0.002 mg/m(3). The experimental operating conditions optimized by response surface method are analytical wavelength of 488.07 nm, working temperature of 138.13 degrees C and carrier gas velocity of 164.15 mL/min, respectively. The sensitivity of the method can be increased by 4.7% under the optimized working conditions, which is especially important for determination of trace substances. The optimization method is universal for most of multi parameter processes. The sensing properties and chemiluminescence mechanism of formaldehyde on nano-Pt/Mo4V6Ti10O47 were investigated. (C) 2020 Elsevier B.V. All rights reserved.