Investigation of doping effects of different noble metals for ethanol gas sensors based on mesoporous In2O3

被引：32
作者：
Cheng, Pengfei [1 ]
Wang, Yinglin [3 ]
Wang, Chen [1 ]
Ma, Jian [2 ]
Xu, Luping [1 ]
Lv, Chao [2 ]
Sun, Yanfeng [2 ]
机构：
[1] Xidian Univ, Sch Aerosp Sci & Technol, Xian 710126, Peoples R China
[2] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China
[3] Forschungszentrum Julich, Inst Complex Syst, Bioelect ICS 8, D-52425 Julich, Germany
来源：
NANOTECHNOLOGY | 2021年 / 32卷 / 30期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
noble metal; indium oxide; ethanol; gas sensing; sensing mechanism; HIGHLY SENSITIVE DETECTION; DOPED IN2O3; SENSING PROPERTIES; OXIDE NANOSTRUCTURES; LOW-TEMPERATURE; SELECTIVE DETECTION; HIGH RESPONSE; AU; ACETONE; NO2;
D O I：
10.1088/1361-6528/abf453
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Elaborating the sensitization effects of different noble metals on In2O3 has great significance in providing an optimum method to improve ethanol sensing performance. In this study, long-range ordered mesoporous In2O3 has been fabricated through replicating the structure of SBA-15. Different noble metals (Au, Ag, Pt and Pd) with the same doping amount (1 at%) have been introduced by an in situ doping routine. The results of the gas sensing investigation indicate that the gas responses towards ethanol can be obviously increased by doping different noble metals. In particular, the best sensing performance towards ethanol detection can be achieved through Pd doping, and the sensors based on Pd-doped In2O3 not only possess the highest response (39.0-100 ppm ethanol) but also have the shortest response and recovery times at the optimal operating temperature of 250 degrees C. The sensing mechanism of noble metal doped materials can be attributed to the synergetic effect combining 'catalysis' and 'electronic and chemical sensitization' of noble metals. In particular, the chemical state of the noble metal also has a great influence on the gas sensing mechanism. A detailed explanation of the enhancement of gas sensing performance through noble metal doping is presented in the gas sensing mechanism part of the manuscript.
引用
收藏
页数：15
相关论文
共 87 条
[1]   Nb2O5 Schottky based ethanol vapour sensors: Effect of metallic catalysts [J].
Ab Kadir, Rosmalini ;
Rani, Rozina Abdul ;
Zoolfakar, Ahmad Sabirin ;
Ou, Jian Zhen ;
Shafiei, Mahnaz ;
Wlodarski, Wojtek ;
Kalantar-zadeh, Kourosh .
SENSORS AND ACTUATORS B-CHEMICAL, 2014, 202 :74-82
[2]   Preparation and characterization of Ag-doped In2O3 nanoparticles gas sensor [J].
Anand, Kanica ;
Kaur, Jasmeet ;
Singh, Ravi Chand ;
Thangaraj, Rengasamy .
CHEMICAL PHYSICS LETTERS, 2017, 682 :140-146
[3]   Temperature dependent selectivity towards ethanol and acetone of Dy3+-doped In2O3 nanoparticles [J].
Anand, Kanica ;
Kaur, Jasmeet ;
Singh, Ravi Chand ;
Thangaraj, Rengasamy .
CHEMICAL PHYSICS LETTERS, 2017, 670 :37-45
[4]   Effect of MoO3 doping and grain size on SnO2-enhancement of sensitivity and selectivity for CO and H2 gas sensing [J].
Ansari, ZA ;
Ansari, SG ;
Ko, T ;
Oh, JH .
SENSORS AND ACTUATORS B-CHEMICAL, 2002, 87 (01) :105-114
[5]   Role of nickel dopant on gas response and selectivity of electrospun indium oxide nanotubes [J].
Bai, Jinglong ;
Wang, Qiao ;
Wang, Yanrong ;
Cheng, Xu ;
Yang, Zhenyu ;
Gu, Xiuyun ;
Huang, Baoyu ;
Sun, Gengzhi ;
Zhang, Zhenxing ;
Pan, Xiaojun ;
Zhou, Jin Yuan ;
Xie, Erqing .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2020, 560 :447-457
[6]   Investigation of electronic and chemical sensitization effects promoted by Pt and Pd nanoparticles on single-crystalline SnO nanobelt-based gas sensors [J].
Barbosa, Martin S. ;
Suman, Pedro H. ;
Kim, Jae J. ;
Tuller, Harry L. ;
Orlandi, Marcelo O. .
SENSORS AND ACTUATORS B-CHEMICAL, 2019, 301
[7]   Gas sensor properties of Ag- and Pd-decorated SnO micro-disks to NO2, H2 and CO: Catalyst enhanced sensor response and selectivity [J].
Barbosa, Martin S. ;
Suman, Pedro H. ;
Kim, Jae J. ;
Tuller, Harry L. ;
Varela, Jose A. ;
Orlandi, Marcelo O. .
SENSORS AND ACTUATORS B-CHEMICAL, 2017, 239 :253-261
[8]   Analysis of the noble metal catalytic additives introduced by impregnation of as obtained SnO2 sol-gel nanocrystals for gas sensors [J].
Cabot, A ;
Arbiol, J ;
Morante, JR ;
Weimar, U ;
Bârsan, N ;
Göpel, W .
SENSORS AND ACTUATORS B-CHEMICAL, 2000, 70 (1-3) :87-100
[9]   Ethanol sensing behavior of Pd-nanoparticles decorated ZnO-nanorod based chemiresistive gas sensors [J].
Cao, P. ;
Yang, Z. ;
Navale, S. T. ;
Han, S. ;
Liu, X. ;
Liu, W. ;
Lu, Y. ;
Stadler, F. J. ;
Zhu, D. .
SENSORS AND ACTUATORS B-CHEMICAL, 2019, 298
[10]   Template-free synthesis of cubic-rhombohedral-In2O3 flower for ppb level acetone detection [J].
Chen, Fang ;
Yang, Man ;
Wang, Xi ;
Song, Yang ;
Guo, Lanlan ;
Xie, Ning ;
Kou, Xueying ;
Xu, Xiumei ;
Sun, Yanfeng ;
Lu, Geyu .
SENSORS AND ACTUATORS B-CHEMICAL, 2019, 290 :459-466
123456789