Oriented ZnO nanorods are successfully decorated with a thin layer of nano-porous SiO2 film via solution method. The as-prepared ZnO@SiO2 composite nanostructure displays superior stability for the detection of a low concentration H2S. A molecule-isolation mechanism is suggested to interpret the improved H2S sensing properties of the ZnO@SiO2 composite nanostructure.
G. Qi, X. Lu and Z. Yuan, RSC Adv., 2016, 6, 45660 DOI: 10.1039/C6RA05611C
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