Room Temperature Methane Sensor Based on Graphene Nanosheets/Polyaniline Nanocomposite Thin Film
- 20 November 2012
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Sensors Journal
- Vol. 13 (2), 777-782
- https://doi.org/10.1109/jsen.2012.2227597
Abstract
In this paper, we report that graphene nanosheets (graphene)/polyaniline (PANI) nanocomposite with a different mass ratio of graphene to PANI are synthesized and applied to fabricate methane (CH4) sensor. The experimental results show that the sensitivity of the graphene/PANI sensor with the composite thin film, which can be obtained by a chemical or physical method, is higher than that of PANI. Meanwhile, the sensitivity of the sensors on the basis of graphene/PANI composite by an in situ chemical method is higher than the sensitivity of those produced by a physical mixing method. The possible reason is that the graphene/PANI compounds have higher surface area than that of PANI. In addition, the detection range of the sensor is enlarged by increasing the mass ratio of graphene to PANI. We infer that there exists a π-π* conjugation system within the graphene/PANI and then use it to explain the above result. The samples are characterized by Fourier transform infrared spectroscopy and scanning electron microscopy, respectively.Keywords
This publication has 29 references indexed in Scilit:
- Layer-by-layer assembly of graphene/polyaniline multilayer films and their application for electrochromic devicesPolymer, 2011
- Preparation and characterization of nanocomposite based on polyaniline and graphene nanosheetsMacromolecular Research, 2011
- Graphene/Polyaniline Nanocomposite for Hydrogen SensingThe Journal of Physical Chemistry C, 2010
- Preparation of a graphene nanosheet/polyaniline composite with high specific capacitanceCarbon, 2010
- Rapid, Facile Microwave-Solvothermal Synthesis of Graphene Nanosheets and Their Polyaniline Nanocomposites for Energy StrorageChemistry of Materials, 2009
- One-step fabrication of a polyaniline nanofiber vapor sensorSensors and Actuators B: Chemical, 2008
- NO2 gas sensing with polyaniline nanofibers synthesized by a facile aqueous/organic interfacial polymerizationSensors and Actuators B: Chemical, 2007
- A layered surface acoustic wave gas sensor based on a polyaniline/In2O3nanofibre compositeNanotechnology, 2006
- Improving drug solubility for oral delivery using solid dispersionsEuropean Journal of Pharmaceutics and Biopharmaceutics, 2000
- Electromagnetic radiation shielding by intrinsically conducting polymersApplied Physics Letters, 1994