The role of stoichiometry of indium and oxygen on gas sensing properties of indium oxide nanostructures

2010 ◽  
Vol 96 (12) ◽  
pp. 123114 ◽  
Author(s):  
Mukesh Kumar ◽  
B. R. Mehta ◽  
V. N. Singh ◽  
R. Chatterjee ◽  
S. Milikisiyants ◽  
...  
Keyword(s):  
Indium Oxide ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Oxide Nanostructures ◽  
Gas Sensing Properties

Synthesis, characterization and gas sensing properties of porous flower-like indium oxide nanostructures

RSC Advances ◽  
2015 ◽  
Vol 5 (38) ◽  
pp. 30297-30302 ◽  
Author(s):  
Xiumei Xu ◽  
Xin Li ◽  
Haijiao Zhang ◽  
Changhao Feng ◽  
Chong Wang ◽  
...  
Keyword(s):  
Indium Oxide ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Oxide Nanostructures ◽  
Gas Sensing Properties

Porous flower-like indium oxide nanostructures were synthesized and exhibited remarkably enhanced response to NO2.

On the Role of Oxygen Vacancies in the Determination of the Gas-Sensing Properties of Tin-Oxide Nanowires

2006 ◽  
Vol 915 ◽  
Author(s):  
Roberto Mosca ◽  
Mingzheng Zha ◽  
Davide Calestani ◽  
Laura Lazzarini ◽  
Giancarlo Salviati ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Oxygen Vacancies ◽  
Gas Sensing ◽  
Oxide Nanowires ◽  
Sensing Properties ◽  
Sno2 Nanowires ◽  
Gas Sensing Properties ◽  
First Results ◽  
Depth Study

AbstractSnO2 nanowires have been recently employed in the “gas-sensors” field and excellent results of conductometric and optical tests on SnO2 nanowires-based gas sensors have been reported.However, the mechanism that controls the gas-sensing effect in metal oxides nanowires is not fully understood yet. Here the authors present the first results of an in-depth study about the influence of post growth treatments on the physical and gas sensing properties of SnO2 nanowires.In particular, SnO2 nanowires grown by a vapour transport technique were annealed in a oxygen-rich atmosphere and then characterized by different techniques to assess the influence of the treatment on the nanowires properties.The annealing in oxygen atmosphere is shown to strongly affect the PL and CL spectra, the electrical resistivity as well as the gas sensing properties of the nanowires. The obtained results are consistent with a reduction of the oxygen vacancies concentration induced by the O2 treatment and seem to confirm the role of these defects in affecting the gas response of SnO2 nanowires-based sensors.

Gas Sensing Properties of Nanocrystalline Indium Oxide Synthesized by Sol–Gel Method

2012 ◽  
Vol 5 (1) ◽  
pp. 109-113 ◽  
Author(s):  
S. C. Kulkarni ◽  
C. S. Aher ◽  
R. Y. Borse ◽  
B. G. Bharate ◽  
SalemS. Al-Deyab ◽  
...  
Keyword(s):  
Indium Oxide ◽  
Gas Sensing ◽  
Sol Gel ◽  
Gel Method ◽  
Sensing Properties ◽  
Sol Gel Method ◽  
Gas Sensing Properties

Hierarchical nanorod-flowers indium oxide microspheres and their gas sensing properties

2016 ◽  
Vol 227 ◽  
pp. 547-553 ◽  
Author(s):  
Xiumei Xu ◽  
Haijiao Zhang ◽  
Xiaolong Hu ◽  
Peng Sun ◽  
Yongsheng Zhu ◽  
...  
Keyword(s):  
Indium Oxide ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties

SnO2 Films Decorated by Au Clusters and their Gas Sensing Properties

2015 ◽  
Vol 827 ◽  
pp. 251-256 ◽  
Author(s):  
Ghenadii Korotcenkov ◽  
Vladimir Brinzari ◽  
S.H. Han ◽  
L.B. Gulina ◽  
V.P. Tolstoy ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Optimal Level ◽  
Small Degree ◽  
Gold Clusters ◽  
Sensing Properties ◽  
Au Clusters ◽  
Layer Deposition ◽  
Gas Sensing Properties ◽  
Surface Decoration

It is shown that successive ionic layer deposition (SILD) method can be used for a surface functionalizing of the SnO2 films and improving their gas sensing properties. It was found that gold clusters deposited on the SnO2 surface were active to both reducing and oxidizing gases. However, the most significant increase in the conductivity response was observed during detection of ozone. It was established that the effect of the SnO2 surface decoration by AuNPs on gas sensing characteristics depends on the number of deposition cycles, i.e. the size of gold clusters. Moreover, there is an optimal level of surface doping, and it corresponds to a very small degree of the surface coverage by gold. Models showing the promotional role of Au additives were then discussed, and the mechanism of sensitization in the SnO2:Au-based gas sensor are proposed.

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