Gas Sensors Based on One Dimensional Nanostructured Metal-Oxides: A Review
By M. M. Arafat, B. Dinan, Sheikh A. Akbar, Abdul Haseeb. Italian National Conference on Sensors, 2012
526 citations recorded by the source corpus.
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.
Subfields: Bioengineering, Electrical and Electronic Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/96fcb9ec401ca56b54b943cdaa858950b1616790
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Citations in the corpus
- Amorphous Pd-assisted H2 detection of ZnO nanorod gas sensor with enhanced sensitivity and stability (2018, background): “In general, the metal oxide-based gas sensors require high operating temperatures of approximately 200-400 °C [13-24] or UV activation [23,26] to produce a suitable sensing atmosphere for eliminating moisture and other adsorbed chemical species to induce chemisorption of oxygen species on the ZnO su”