期刊
CERAMICS INTERNATIONAL
卷 42, 期 8, 页码 9851-9857出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.03.083
关键词
Hierarchical and porous structures; Graphene; Gas sensing
资金
- National Natural Science Foundation of China, China [61403110]
Because of their potential applications in gas sensing and catalysis, reduced graphene oxide (RGO) and ZnO have been the focus of much recent attention. However, few reported materials have been produced via the combination of hierarchical ZnO structures with RGO to achieve high sensing performances. In this paper, a hydrothermal method was used to synthesize hierarchical porous ZnO nanoflowers, which were then combined with graphene to enhance their sensing performances. The rapid detection of 1 ppm NO2 was achieved at 174 degrees C. The morphologies and structures of these materials were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and Raman spectroscopy. Photoluminescence measurements and X-ray photoelectron spectroscopy were also used to investigate the mechanism of gas sensing by these materials. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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