Open Access

ARTICLE

VOC Sensing Studies on Electrically Conductive Polyaniline@MoS₂ Nanocomposites

RUBY AHMED¹, MOHAMMAD OMAISH ANSARI², FARMAN ALI¹, SHAHID PERVEZ ANSARI^1,*

1 Department of Applied Chemistry, Zakir Husain College of Engineering and Technology Aligarh Muslim University, Aligarh-202002
2 Center of Nanotechnology (CNT), King Abdulaziz University, Jeddah, KSA.

* Corresponding Author: e-mail:

Journal of Polymer Materials 2019, 36(3), 243-251. https://doi.org/10.32381/JPM.2019.36.03.4

Abstract

Polyaniline (PANI) and molybdenum disulphide (MoS₂ ) were used to prepare nanocomposites by in-situ oxidative polymerization of acidified aniline in presence of dispersed MoS₂ in the reaction mixture. Electron Microscopy (SEM & TEM), Fourier Transform Infrared (FTIR) spectroscopy, Ultraviolet-Visible (UV-Vis) spectroscopy, and X-ray diffraction (XRD) were used to characterize these nanocomposites. SEM micrographs showed that PANI is present on the layers of MoS₂ which were exfoliated during the preparation and the presence of MoS₂ is also confirmed by XRD peaks. The nanocomposites were studied for their electrical conductivity and stability of electrical conductivity in terms of d.c. electrical conductivity retention. Further, the nanocomposites were also studied for their sensing behaviour towards alcohol, ketone, aldehyde in ambient condition. These nanocomposites were found to be semiconducting, stable upto 100°C and exhibited good sensitivity towards above mentioned group of volatile organic compounds (VOCs).

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