Ethanol sensing characteristics of sensors based on ZnO:Al nanostructures prepared by thermal oxidation

2012 ◽  
Author(s):  
Supab Choopun ◽  
Duangmanee Wongratanaphisan ◽  
Atcharawon Gardchareon ◽  
Ekasidd Wongrat
Keyword(s):  
Thermal Oxidation ◽  
Ethanol Sensing ◽  
Sensing Characteristics

Ethanol Sensing Characteristics of ZnO Nanostructures Impregnated by Gold Colloid

2008 ◽  
Vol 55-57 ◽  
pp. 293-296 ◽  
Author(s):  
E. Wongrat ◽  
P. Pimpang ◽  
N. Mangkorntong ◽  
Supab Choopun
Keyword(s):  
Thermal Oxidation ◽  
Operating Temperature ◽  
Heating Temperature ◽  
Chemical Reduction ◽  
Zinc Powder ◽  
Optimum Operating ◽  
Zno Nanostructures ◽  
Gold Colloid ◽  
Optimum Operating Temperature ◽  
Ethanol Sensing

ZnO nanostructures were synthesized by thermal oxidation reaction from zinc powder and then impregnated by gold colloid. The gold colloid was prepared by chemical reduction technique and had red color. The heating temperature and sintering time of thermal oxidation were 700 °C and 24 hours, respectively under oxygen atmosphere. The morphology of ZnO nanostructures and ZnO impregnated gold colloid were studied by field emission scanning electron microscope (FE-SEM). The diameter and length of pure ZnO and ZnO impregnated gold colloid were about the same value and were in the range of 100-500 nm and 2.0-7.0 µm, respectively. The ethanol sensing properties of ZnO impregnated by gold colloid were tested in ethanol atmosphere at ethanol concentrations of 1000 ppm and at an operating temperature of 260-360 °C. It was found that the sensitivity and response time were improved for gold impregnated sensor with an optimum operating temperature of 300°C due to the enhanced reaction between the ethanol and the adsorbed oxygen at an optimum temperature.

Sensing Characteristics of Cubic and Rhombohedral Nanocrystalline ITO Thick Films

2001 ◽  
Vol 704 ◽  
Author(s):  
Jeung-Soo Huh ◽  
Bong-Chull Kim ◽  
Jae-Yeol Kim ◽  
Jeong-Ok Lim
Keyword(s):  
Crystal Structure ◽  
Particle Size ◽  
Binding Energy ◽  
Surface Structure ◽  
Crystal Structures ◽  
Aging Time ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Ethanol Sensing ◽  
Sensing Characteristics

AbstractTwo kinds of nanocrystalline Tin doped indium oxide (or indium tin oxide: denoted ITO hereafter) powders with different crystal structures – rhombohedral and cubic – were prepared using a coprecipitation method through the control of pH of a mixing solution and aging time after coprecipitation. The two powders have the same particle size of 15 nm in diameter but different morphologies (spherical for rhomboheral and rectangular for cubic). The gaseous ethanol sensing characteristics of the sensors prepared by the two ITO powders were quite different. The sensitivity of rhombohedral ITO sensor was high compared to that of the cubic ITO sensor across all temperatures. The reason for this is explained through the viewpoint of the binding energy of XPS and the surface structure relating to the crystal structure.

Photoelectric properties of ZnO/Ag2S heterostructure and its photoelectric ethanol sensing characteristics

2012 ◽  
Vol 133 (2-3) ◽  
pp. 834-838 ◽  
Author(s):  
Yu Zhang ◽  
Bingkun Liu ◽  
Dejun Wang ◽  
Yanhong Lin ◽  
Tengfeng Xie ◽  
...  
Keyword(s):  
Photoelectric Properties ◽  
Ethanol Sensing ◽  
Sensing Characteristics

scholarly journals Doping effect of In2O3 on structural and ethanol-sensing characteristics of ZnO nanotubes fabricated by electrospinning

2015 ◽  
Vol 349 ◽  
pp. 615-621 ◽  
Author(s):  
Baoyu Huang ◽  
Changhui Zhao ◽  
Mingxiang Zhang ◽  
Zemin Zhang ◽  
Erqing Xie ◽  
...  
Keyword(s):  
Doping Effect ◽  
Zno Nanotubes ◽  
Ethanol Sensing ◽  
Sensing Characteristics

UV-light-assisted ethanol sensing characteristics of g-C3N4/ZnO composites at room temperature

2018 ◽  
Vol 441 ◽  
pp. 317-323 ◽  
Author(s):  
Jiali Zhai ◽  
Tao Wang ◽  
Chuang Wang ◽  
Dechen Liu
Keyword(s):  
Room Temperature ◽  
Uv Light ◽  
Ethanol Sensing ◽  
Sensing Characteristics

Realizing room-temperature self-powered ethanol sensing of ZnO nanowire arrays by combining their piezoelectric, photoelectric and gas sensing characteristics

2015 ◽  
Vol 3 (7) ◽  
pp. 3529-3535 ◽  
Author(s):  
Penglei Wang ◽  
Yongming Fu ◽  
Binwei Yu ◽  
Yayu Zhao ◽  
Lili Xing ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Nanowire Arrays ◽  
Zno Nanowire ◽  
Zno Nanowire Arrays ◽  
Self Powered ◽  
Ethanol Sensing ◽  
Sensing Characteristics

Room-temperature self-powered ethanol sensing has been realized from ZnO nanowire arrays by combining their piezoelectric, photoelectric and gas sensing characteristics.

Highly Repeatable Low-ppm Ethanol Sensing Characteristics of p-TiO2-Based Resistive Devices

2015 ◽  
Vol 15 (1) ◽  
pp. 408-416 ◽  
Author(s):  
A. Hazra ◽  
K. Dutta ◽  
B. Bhowmik ◽  
Partha Bhattacharyya
Keyword(s):  
Ethanol Sensing ◽  
Sensing Characteristics
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