scholarly journals Materials Engineering Strategies to Control Metal Oxides Nanowires Sensing Properties

2021 ◽  
pp. 2101629
Author(s):  
Navpreet Kaur ◽  
Mandeep Singh ◽  
Elisabetta Comini
Keyword(s):  
Metal Oxides ◽  
Sensing Properties ◽  
Materials Engineering

scholarly journals Nanocrystalline Metal Oxides for Methane Sensors: Role of Noble Metals

2009 ◽  
Vol 2009 ◽  
pp. 1-20 ◽  
Author(s):  
S. Basu ◽  
P. K. Basu
Keyword(s):  
Metal Oxide ◽  
Metal Oxides ◽  
Noble Metal ◽  
Gas Sensors ◽  
Noble Metals ◽  
Industrial Applications ◽  
Metal Catalyst ◽  
Nanocrystalline Metal ◽  
Sensing Properties

Methane is an important gas for domestic and industrial applications and its source is mainly coalmines. Since methane is extremely inflammable in the coalmine atmosphere, it is essential to develop a reliable and relatively inexpensive chemical gas sensor to detect this inflammable gas below its explosion amount in air. The metal oxides have been proved to be potential materials for the development of commercial gas sensors. The functional properties of the metal oxide-based gas sensors can be improved not only by tailoring the crystal size of metal oxides but also by incorporating the noble metal catalyst on nanocrystalline metal oxide matrix. It was observed that the surface modification of nanocrystalline metal oxide thin films by noble metal sensitizers and the use of a noble metal catalytic contact as electrode reduce the operating temperatures appreciably and improve the sensing properties. This review article concentrates on the nanocrystalline metal oxide methane sensors and the role of noble metals on the sensing properties.

The enhanced ethanol sensing properties obtained by the introduction of NiO into ZnO/SnO2 mixed metal oxides

2018 ◽  
Vol 265 ◽  
pp. 345-352 ◽  
Author(s):  
Chunli Zhao ◽  
Yifei Ren ◽  
Shoushun Chen ◽  
Lan Yang ◽  
Ying Guo
Keyword(s):  
Metal Oxides ◽  
Mixed Metal Oxides ◽  
Sensing Properties ◽  
Mixed Metal ◽  
Ethanol Sensing

scholarly journals General fabrication and enhanced VOC gas-sensing properties of hierarchically porous metal oxides

RSC Advances ◽  
2017 ◽  
Vol 7 (57) ◽  
pp. 35897-35904 ◽  
Author(s):  
Yue Gao ◽  
Qinghong Kong ◽  
Junhao Zhang ◽  
Guangcheng Xi
Keyword(s):  
Detection Limit ◽  
Metal Oxides ◽  
Noble Metal ◽  
Gas Sensing ◽  
Porous Metal ◽  
Hierarchically Porous ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Porous Metal Oxides

A facile and general route to synthesize hierarchically porous metal oxides, along with their noble-metal modification, is reported. The lowest detection limit achieved for formaldehyde is 10 ppb, much less than the indoor limit (60 ppb).

Spray Pyrolysis of Metal Oxides SnO2 and In2O3 as an Example of Thin Film Technology: Advantages and Limitations for Application in Conductometric Gas Sensors

2013 ◽  
Vol 748 ◽  
pp. 22-27 ◽  
Author(s):  
Ghenadii Korotcenkov ◽  
B.K. Cho ◽  
V. Brinzari
Keyword(s):  
Thin Film ◽  
Structural Analysis ◽  
Metal Oxides ◽  
Spray Pyrolysis ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Material Structure ◽  
Sensing Properties ◽  
Thin Film Technology ◽  
Gas Sensing Properties

In this paper we present results of structural analysis of SnO2films deposited by spray pyrolysis and designed for application in conductometric gas sensors. The aim of this analysis was summarizing the results obtained in this field, highlighting a correlation between material structure and its gas sensing properties, and formulating some general regularities typical for metal oxides.

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