| Title: | Fabrication and NO2 gas-sensing properties of reduced graphene oxide/WO3 nanocomposite films |
| Authors: | Su, Pi-Guey
Peng, Shih-Liang |
| Contributors: | Dept Chem |
| Keywords: | Tungsten oxide (WO3)
Reduced graphene oxide (RGO)
Nanocomposite
Polyol
Metal organic decomposition (MOD)
Room-temperature gas sensor |
| Date: | 2015-01 |
| Issue Date: | 2015-11-03 15:55:39 (UTC+8) |
| Abstract: | One-pot polyol process was combined with the metal organic decomposition (MOD) method to fabricate a room-temperature NO2 gas sensor based on tungsten oxide and reduced graphene oxide (RGO/WO3) nanocomposite films. Fourier Transform infrared spectrometer (FTIR), X-ray diffractometry (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM) were used to analyze the microstructure and morphology of the fabricated films. The electrical and NO2 gas-sensing properties of WO3 to which various amounts of RGO were added were measured in detail as a function of concentration of NO2 gas at room temperature, to elucidate the contribution of RGO to the NO2 gas-sensing capacity. The NO2 gas-sensing mechanism of the RGO/WO3 nanocomposite films were explained by considering their composition and microstructures. The sensor that was based on a nanocomposite film of RGO/WO3 exhibited a strong response to low concentrations of NO2 gas at room temperature, satisfactory linearity and favorable long-term stability. (C) 2014 Elsevier B.V. All rights reserved. |
| Relation: | TALANTA 卷: 132 頁碼: 398-405 |
| Appears in Collections: | [Department of Chemistry & Graduate Institute of Applied Chemistry ] journal articles
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