期刊
APPLIED SURFACE SCIENCE
卷 402, 期 -, 页码 410-417出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.01.064
关键词
Nanoparticles; Reduced graphene oxide; Composites; Humidity sensor
类别
资金
- National Institute for Research and Development of Isotopic and Molecular Technologies [PN16-30/02 05]
Reduced graphene oxide (rGO) decorated with Fe doped SnO2 nanoparticles were fabricated via the electrostatic interaction between positively charged modified Fe-doped SnO2 oxide and negatively charged graphene oxide (GO) in the presence of poly(allylamine) hydrochloride (PAH). The decoration of rGO layers with SnO2:Fe nanoparticles was highlited by TEM microsopy. For composite sample the diffraction patterns coincide well with those of SnO2:Fe nanoparticles. The reduction of graphene oxide was evidenced using XRD and FT-IR spectroscopy. The formation of SnO2:Fe-PAH-graphene composites was confirmed by FT-IR, Raman and EPR spectroscopy. Sensitivity tests for relative humidity (RH) measurements were carried out at five different concentrations of humid air at room temperature. The prepared composite sensor exhibited a higher sensing response as compared with Fe:SnO2 nanoparticles. (C) 2017 Elsevier B.V. All rights reserved.
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