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- Title
Hydrothermal synthesis of hierarchical g-C<sub>3</sub>N<sub>4</sub>/SnO<sub>2</sub> heterostructures and their enhanced gas sensing properties.
- Authors
ZHOU Qilin; ZHAO Bangyu; GUO Weiwei; HE Youzhou; LI Xiaodan; ZHOU Guilin; ZHANG Guizhi
- Abstract
Different proportions (0, 1%, 3%, 5%, 7%, 9wt%) of hierarchical g-C3N4/SnO2 heterostructures were synthesized by one-step hydrothermal method. The crystal structure, morphology and optical properties of the materials were investigated by X-ray diffraction (XRD), infrared spectroscopy (FT-IR), Raman spectroscopy (Raman), X-ray photoelectron spectroscopy (XPS), electron microscopy (SEM and TEM), BET specific surface area measurement and photoluminescence spectroscopy (PL). Meanwhile, the gas sensing performances of g-C3N4/SnO2 nanostructures were investigated towards ethanol. The results showed that the gas response of 5wt% g-C3N4/SnO2 based sensor was 77.5 x 10-6 to 40 x 10-6 ethanol at the optimum working temperature of 270 °C, which was about 8.4 times higher than that of the pure SnO2. Finally, the enhanced gas sensing mecha nism of the g-C3N4/SnO2 nanocomposite was discussed.
- Publication
Journal of Functional Materials / Gongneng Cailiao, 2019, Vol 59, Issue 11, p11100
- ISSN
1001-9731
- Publication type
Article
- DOI
10.3969/j.issn.1001-9731.2019.11.017