Beilstein J. Nanotechnol.2016,7, 22–31, doi:10.3762/bjnano.7.3
stabilized gold nanoparticles (Au NPs) directly on the surface of nanostructured ZnO powders, previously synthesized through a sol–gel process. The effect of thermal annealing temperatures (300 and 550 °C) on chemical, morphological, and structural properties of pristine and Au-dopedZnO nancomposites (Au
gas-sensing properties.
Keywords: Au-dopedZnO; chemiresistive gas sensor; electrosynthesis; NO2 gas sensor; ZnO nanostructures; Introduction
Today the use of low-cost portable gas sensors is essential to detect and to monitor toxic, polluting and combustible gases for the environmental protection
nanostructures were lower than those of pristine and Au-dopedZnO nanorods, revealing that for NO2 gas-sensing the rod-like structure and the intimate contact between stabilized Au NPs and ZnO nanorods have a significant positive effect on the resistance of sensors and, consequently, their response.
Experimental
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Figure 1:
A scheme of ZnO-based chemiresistive gas sensor.