Sensors 2012, 12(6), 7207-7258; doi:10.3390/s120607207

Gas Sensors Based on One Dimensional Nanostructured Metal-Oxides: A Review

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Received: 2 April 2012; in revised form: 18 April 2012 / Accepted: 11 May 2012 / Published: 30 May 2012
(This article belongs to the Special Issue Sensing at the Nano-Scale: Chemical and Bio-Sensing)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Recently one dimensional (1-D) nanostructured metal-oxides have attracted much attention because of their potential applications in gas sensors. 1-D nanostructured metal-oxides provide high surface to volume ratio, while maintaining good chemical and thermal stabilities with minimal power consumption and low weight. In recent years, various processing routes have been developed for the synthesis of 1-D nanostructured metal-oxides such as hydrothermal, ultrasonic irradiation, electrospinning, anodization, sol-gel, molten-salt, carbothermal reduction, solid-state chemical reaction, thermal evaporation, vapor-phase transport, aerosol, RF sputtering, molecular beam epitaxy, chemical vapor deposition, gas-phase assisted nanocarving, UV lithography and dry plasma etching. A variety of sensor fabrication processing routes have also been developed. Depending on the materials, morphology and fabrication process the performance of the sensor towards a specific gas shows a varying degree of success. This article reviews and evaluates the performance of 1-D nanostructured metal-oxide gas sensors based on ZnO, SnO2, TiO2, In2O3, WOx, AgVO3, CdO, MoO3, CuO, TeO2 and Fe2O3. Advantages and disadvantages of each sensor are summarized, along with the associated sensing mechanism. Finally, the article concludes with some future directions of research.
Keywords: gas sensor; one dimensional nanostructures; metal-oxides
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MDPI and ACS Style

Arafat, M.M.; Dinan, B.; Akbar, S.A.; Haseeb, A.S.M.A. Gas Sensors Based on One Dimensional Nanostructured Metal-Oxides: A Review. Sensors 2012, 12, 7207-7258.

AMA Style

Arafat MM, Dinan B, Akbar SA, Haseeb ASMA. Gas Sensors Based on One Dimensional Nanostructured Metal-Oxides: A Review. Sensors. 2012; 12(6):7207-7258.

Chicago/Turabian Style

Arafat, M. M.; Dinan, B.; Akbar, Sheikh A.; Haseeb, A. S. M. A. 2012. "Gas Sensors Based on One Dimensional Nanostructured Metal-Oxides: A Review." Sensors 12, no. 6: 7207-7258.

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