Facile Solvothermal Synthesis and Gas Sensitivity of Graphene/WO3 Nanocomposites
AbstractGraphene has attracted enormous attention owing to its extraordinary properties, while graphene-based nanocomposites hold promise for many applications. In this paper, we present a two-step exploitation method for preparation of graphene oxides and a facile solvothermal route for preparation of few-layer graphene nanosheets and graphene/WO3 nanocomposites in an ethanol-distilled water medium. The as-synthesized samples were characterized by using field emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HRTEM), ultraviolet-visible (UV-vis) spectroscopy, Raman spectroscopy, X-ray diffraction (XRD), thermogravimetric-differential thermal analysis (TG-DTA) and gas-sensing test. The resistivity of the thick-film gas sensors based on sandwich-like graphene/WO3 nanocomposites can be controlled by varying the amount of graphene in the composites. Graphene/WO3 nanocomposites with graphene content higher than 1% show fast response, high selectivity and fine sensitivity to NOx. View Full-Text
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Gui, Y.; Yuan, J.; Wang, W.; Zhao, J.; Tian, J.; Xie, B. Facile Solvothermal Synthesis and Gas Sensitivity of Graphene/WO3 Nanocomposites. Materials 2014, 7, 4587-4600.
Gui Y, Yuan J, Wang W, Zhao J, Tian J, Xie B. Facile Solvothermal Synthesis and Gas Sensitivity of Graphene/WO3 Nanocomposites. Materials. 2014; 7(6):4587-4600.Chicago/Turabian Style
Gui, Yanghai; Yuan, Junhua; Wang, Weiming; Zhao, Jianbo; Tian, Junfeng; Xie, Bing. 2014. "Facile Solvothermal Synthesis and Gas Sensitivity of Graphene/WO3 Nanocomposites." Materials 7, no. 6: 4587-4600.