Synthesis and humidity sensing property of α-Fe2O3 and polyaniline composite

Research paper by Pratibha Singh, Chandra Shekhar Kushwaha; S.K. Shukla; G.C. Dubey

Indexed on: 26 Apr '18Published on: 25 Apr '18Published in: Materials Today: Proceedings


Publication date: 2018 Source:Materials Today: Proceedings, Volume 5, Issue 3, Part 1 Author(s): Pratibha Singh, Chandra Shekhar Kushwaha, S.K. Shukla, G.C. Dubey The present paper reports the synthesis of α-Fe2O3 by nitrate eutectic melt method and PANI/α-Fe2O3 composite by in-situ polymerization and composite formation (I.P.C.F.) technique at ambient condition. The prepared samples were characterized using infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscope (SEM), and UV–VIS spectroscopy (UV–VIS). The result reveals that prepared composite is crystalline in nature along with improved stability. Further, electrical properties reveals the formation of PANI/α-Fe2O3 composite with improved electrical conductivity than α-Fe2O3 and polyaniline. The electrical resistance of a PANI/α-Fe2O3 film casted on a glass substrate was measured as function of relative humidity in the range of 10–95% maintained by salt solution method to explore its use for humidity monitoring purposes. Finally, PANI/α-Fe2O3 promises a perspective materials for humidity sensing applications.