The effect of Pt and Pd surface doping on the response of nanocrystalline tin dioxide gas sensors to CO

被引:118
作者
SchweizerBerberich, M [1 ]
Zheng, JG [1 ]
Weimar, U [1 ]
Gopel, W [1 ]
Barsan, N [1 ]
Pentia, E [1 ]
Tomescu, A [1 ]
机构
[1] INST PHYS & TECHNOL MAT,R-76900 BUCHAREST,ROMANIA
关键词
tin dioxide; gas sensor; Pt and Pd doping;
D O I
10.1016/0925-4005(96)80018-9
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
SnO2 sensors were prepared by precipitating Sn(OH)(4) from an aqueous solution of SnCl4 or by evaporating SnO2 in the UHV. Subsequent X-ray and TEM measurements show grain sizes in the nanometer range after annealing at different temperatures or annealing times. The effect of Pt and Pd doping upon the response to CO is studied. Parameters, which we focused on, are sensor signal dependent on the operating temperature and dependent on the gas concentration. The results for ceramic sensors are compared with those for thin film sensors.
引用
收藏
页码:71 / 75
页数:5
相关论文
共 13 条
  • [1] CONDUCTION MODELS IN GAS-SENSING SNO2 LAYERS - GRAIN-SIZE EFFECTS AND AMBIENT ATMOSPHERE INFLUENCE
    BARSAN, N
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 1994, 17 (03) : 241 - 246
  • [2] THE MECHANISM OF THE INTERACTION BETWEEN CO AND AN SNO2 SURFACE - THE ROLE OF WATER-VAPOR
    BARSAN, N
    IONESCU, R
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 1993, 12 (01) : 71 - 75
  • [3] BARSAN N, 1994, SENSOR ACTUAT B-CHEM, V18, P466
  • [4] Morphological analysis of nanocrystalline SnO2 for gas sensor applications
    Dieguez, A
    RomanoRodriguez, A
    Morante, JR
    Weimar, U
    SchweizerBerberich, M
    Gopel, W
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 1996, 31 (1-2) : 1 - 8
  • [5] SNO2 SENSORS - CURRENT STATUS AND FUTURE-PROSPECTS
    GOPEL, W
    SCHIERBAUM, KD
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 1995, 26 (1-3) : 1 - 12
  • [6] Gopel W., 1991, SENSORS COMPREHENSIV, V3
  • [7] Ihokura K., 1994, STANNIC OXIDE GAS SE
  • [8] SURFACE PROCESSES IN THE DETECTION OF REDUCING GASES WITH SNO2-BASED DEVICES
    KOHL, D
    [J]. SENSORS AND ACTUATORS, 1989, 18 (01): : 71 - 113
  • [9] MORRISON SR, 1977, CHEM PHYSICS SURFACE
  • [10] Sberveglieri G, 1992, GAS SENSORS PRINCIPL