Cotton-like Fe2O3 anchored on graphene sheets for improved NO2 sensing at room temperature

In this work, cotton-like Fe 2 O 3 –reduced graphene oxide (rGO) composites were synthesized by a one-step microwave-assisted hydrothermal method, using ferrous sulfate (FeSO 4 ) precursor in graphene oxide (GO) solution. The as-obtained products were characterized by X-ray diffraction (XRD), field-...

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Bibliographic Details
Published inJournal of materials science. Materials in electronics Vol. 26; no. 7; pp. 5024 - 5029
Main Authors Wang, Yumei, Gong, Siying
Format Journal Article
LanguageEnglish
Published New York Springer US 01.07.2015
Subjects
Characterization and Evaluation of Materials
Chemistry and Materials Science
Materials Science
Optical and Electronic Materials
Graphene Oxide
Fe2O3
Graphene Sheet
Ethanol Vapor
Excellent Selectivity
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Summary:In this work, cotton-like Fe 2 O 3 –reduced graphene oxide (rGO) composites were synthesized by a one-step microwave-assisted hydrothermal method, using ferrous sulfate (FeSO 4 ) precursor in graphene oxide (GO) solution. The as-obtained products were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), and Fourier-transform infrared (FT-IR) spectra. The results indicated that the cotton-like Fe 2 O 3 was successfully anchored on graphene sheets with a homogeneous distribution. To demonstrate the potential applications, the sensor was fabricated by using the cotton-like Fe 2 O 3 –rGO composites for detection of NO 2 at room temperature. The testing results demonstrate that the sensor exhibited an excellent selectivity and a significant response to NO 2 with a concentration lower to 1 ppm. The present study may serve as a facile and green approach for preparing graphene materials modified with metal oxides to improve their sensing performances.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-015-3019-y