Submit Manuscript  

Article Details


Synthesis of Polyaniline/Graphene Nanocomposites and Electrochemical Sensing Performance for Formaldehyde

Author(s):

Lizhai Pei, Yue Ma, Fanglv Qiu, Feifei Lin, Chuangang Fan* and Xianzhang Ling   Pages 1 - 6 ( 6 )

Abstract:


Background: Formaldehyde has been recognized as the important liquid environmental pollutant which can cause health risk. Great effort has been devoted to detecting formaldehyde in liquid environment. It is of important significance to develop a sensitive method for measuring formaldehyde from the environmental and health viewpoints. Methods: Polyaniline/graphene nanocomposites have been prepared by a simple in-situ polymerization process using graphene and aniline as the raw materials. The nanocomposites were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and transmission electron microscopy (TEM) and high-resolution TEM (HRTEM). The polyaniline/graphene nanocomposites were applied to modify the glassy carbon electrode for the detection of formaldehyde by cyclic voltammetry (CV) method. Results: The polyaniline/graphene nanocomposites consist of hexagonal graphite phase. The polyaniline particles are dispersed and attached to the surface of the graphene nanosheet-shaped morphology. The thickness of the graphene nanosheets is less than 50 nm. The electrocatalytic performance of the polyaniline/graphene nanocomposites modified glassy carbon electrode towards formaldehyde was obtained. The potential of the irreversible oxidation peak is located at +0.19 V. The polyaniline/graphene nanocomposites modified glassy carbon electrode shows a wide linear range of 0.0001-2 mM and low detection limit of 0.085 μM. Conclusion: The nanocomposites modified glassy carbon electrode possesses good reproducibility and stability. The polyaniline/graphene nanocomposites show great application potential for the electrochemical sensors to detect formaldehyde in liquid environments.

Keywords:

Polyaniline, graphene, nanocomposites, glassy carbon electrode, electrochemistry, formaldehyde.

Affiliation:

Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Key Lab of Materials Science and Processing of Anhui Province, School of Materials Science and Engineering, Anhui University of Technology, Ma`anshan, Anhui 243002, P. R., Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Key Lab of Materials Science and Processing of Anhui Province, School of Materials Science and Engineering, Anhui University of Technology, Ma`anshan, Anhui 243002, P. R., Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Key Lab of Materials Science and Processing of Anhui Province, School of Materials Science and Engineering, Anhui University of Technology, Ma`anshan, Anhui 243002, P. R., Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Key Lab of Materials Science and Processing of Anhui Province, School of Materials Science and Engineering, Anhui University of Technology, Ma`anshan, Anhui 243002, P. R., Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Key Lab of Materials Science and Processing of Anhui Province, School of Materials Science and Engineering, Anhui University of Technology, Ma`anshan, Anhui 243002, P. R., School of Civil Engineering, Harbin Institute of Technology, Heilongjiang, Harbin 150090, P. R.



Read Full-Text article