Journal
CERAMICS INTERNATIONAL
Volume 42, Issue 1, Pages 2085-2090Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2015.09.134
Keywords
Urchin-like; Hollow spheres; Graphene; Gas sensing
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Funding
- Science and Technology Research Project of Department of Education of Heilongjiang Province, China [12541224]
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Hierarchical urchin-like hollow spheres of ZnO nanorods with reduced graphene oxide (Urc-ZGO) have been synthesized via an efficient one step solvothermal method. The ZnO hollow spheres with a size of 0.5-2 mu m are anchored homogeneously on the surface of reduced graphene oxide (RGO) layers. When used as a gas sensor for detection of NO2, the Urc-ZGO composite shows much higher sensitivity towards NO2 at room temperature (RT) than the corresponding RGO. It is found that Urc-ZGO hollow spheres prepared with 30 mg weight addition ratio of graphene (Urc-ZGO-30) exhibit the highest response at RT. The obvious enhancement of the gas sensing properties is attributed to the hierarchical hollow spheres in the structure of Urc-ZGO. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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