Journal
MATERIALS LETTERS
Volume 64, Issue 22, Pages 2479-2482Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2010.08.027
Keywords
Sensors; Solution synthesis; Graphene films; ZnO nanorods
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We report a solution-processed gas sensor based on vertically aligned ZnO nanorods (NRs) on a chemically converted graphene (CCG) film The prepared sensor device effectively detected 2 ppm of H2S in oxygen at room temperature A high sensitivity of the gas sensor resulted from the growth of highly dense vertical ZnO NRs on the CCG film with numerous tiny white clots on its surface, which may provide a sufficient number of sites for the nucleation and growth of the ZnO NRs. The adsorption of oxygen on the surface of the ZnO NRs was found to be crucial for obtaining an excellent gas sensing performance of the ZnO NRs-CCG sensor. (C) 2010 Elsevier B V All rights reserved
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