期刊
RSC ADVANCES
卷 7, 期 41, 页码 25504-25511出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra01901g
关键词
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资金
- National Natural Science Foundation of China [51404097, 51504083, U1404613]
- Program for Science & Technology Innovation Talents in Universities of Henan Province [17HASTIT029]
- Research Foundation for Youth Scholars of Higher Education of Henan Province [2016GGJS-040]
- Natural Science Foundation of Henan Province of China [162300410113]
- China Postdoctoral Science Foundation [2016M592290]
- Fundamental Research Funds for the Universities of Henan Province [NSFRF1606, NSFRF140101]
- Program for innovative Research of Henan Province [16IRTSTHN005]
- Foundation for Distinguished Young Scientists of Henan Polytechnic University [J2016-2, J2017-3]
The composites of SnO2 have attracted much interest in the last few years due to their excellent sensing properties. A series of composites were prepared with two-dimensional (2D) g-C3N4 nanosheet modified SnO2 by a simple hydrothermal method in this work. The as-prepared composites were characterized by the techniques of powder X-ray diffraction (XRD), thermogravimetric analysis (TG), scanning electron microscopy (SEM), transmission electron microscopy ( TEM), energy dispersive X-ray spectroscopy (EDS), N-2 sorption and X-ray photoelectron spectroscopy (XPS). The gas sensing measurement results indicated that the sensor based on g-C3N4/SnO2 composite showed high sensitivity and excellent selectivity for detection of ethanol vapor. At 500 ppm of ethanol vapor, the response value (R-a/R-g) of 5 wt% 2D g-C3N4 modified SnO2 was 240 at 300 degrees C. Therefore, the g-C3N4/SnO2 composites have a great potential ethanol gas sensing application.
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