Chemical sensing oxide nanostructures

Tin oxide is an -1ype semiconductor with ca. 3.8 eV energy gap. It is the basic material commonly used in gas sensing, oxidative catalysis, photocatalysis, dye-sensitized solar cell and conductive glass. In order to enhance the performance of SnOa-based device, many studies have been focused on the synthesis of nanostructure Sn02-based materials with controllable microstructure, particle size and physico-chemical properties [1-6]. The sol-gel method was reported to be a simple and reproducible route for one-step synthesis of nanostructured... 

One- and two-dimensional metal oxide nanostructures for chemical sensing... 

Kolmakov A, Moskovits M (2004) Chemical sensing and catalysis by one-dimensional metal oxide nanostructures. Annu Rev Mater Res 34 151-180... 

Metal oxides are among the most used active materials for conductometric chemical sensors. They have a wide variety of electrical properties spanning from insulator to quasi metallic behavior. The discovery of their sensing properties was made more than five decades ago, thereafter the interest of researchers was focused on nanostructured materials. These materials may give a greater modulation of the electrical properties for the interaction with the surrounding atmosphere thanks to the higher surface to volume ratio. 

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