Ethanol sensing properties of pure and Au modified ZnO nanowires

Quasi-one-dimensional metal-oxide-based heterostructural gas-sensing materials: A review

“…Metal particles on semiconducting metal oxides such as the ZnO [107,136] and SnO 2 [37] have been found to alter the surface conductivity of those oxides. A number of studies have conducted to the model systems in order to understand the processes that are relevant to gas-sensing operation, which in turn promote the development of gas sensor application.…”

Enhanced H2S sensing characteristics of Au modified Fe2O3 thin films

“…3(b)). The increase in peak intensity may be attributed to disorder induced Raman scattering whereas the decrease to deterioration of Fe 2 O 3 host matrix upon larger Au incorporation [30]. Au percentage in the samples was independently verified using EDS and the variation in conductivity and sensor response as a function of Au loading is tabulated in Table 2.…”

Nano-developments for Food Packaging and Labeling Applications

“…In addition, ethylene gas (indicator of the fruit ripening) can be detected by WO 3 -SnO 2 nanocomposites (Pimtong-Ngam et al 2007) or nanocomposites with modified porous clay heterostructures (Srithammaraj et al 2012). This is a field that is growing; just during last year, many different ethanol sensors have been developed based on nanoparticles like p-Co 3 O 4 /n-TiO 2 heterojunctions , gold modified ZnO nanowires (Ramgir et al 2013), WO 3 , CuO (Gopalakrishna et al 2013), or nanocomposites (Jia and Wang 2013;Khan et al 2013). …”