Polypyrrole–titanium(IV) doped iron(III) oxide nanocomposites: Synthesis,characterization with tunable electrical and electrochemical properties |
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| Authors: | Debabrata Nandi Arup Kumar Ghosh Kaushik Gupta Amitabha De Pintu Sen Ankan Duttachowdhury Uday Chand Ghosh |
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| Affiliation: | 1. Department of Chemistry and Bio-Chemistry, Presidency University (Formerly Presidency College), Kolkata 700073, India;2. Chemical Science Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India;3. Variable Energy Cyclotrone Centre, 1/AF Bidhannagar, Kolkata 700064, India;1. Department of Chemistry, University of Ioannina, Ioannina 451 10, Greece;2. Department of Physics, University of Ioannina, Ioannina 451 10, Greece;1. State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;2. University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China;1. School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China;2. College of Chemistry and Chemical Engineering, Xuzhou University of Technology, Xuzhou 22111, China |
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| Abstract: | Titanium(IV)-doped synthetic nanostructured iron(III) oxide (NITO) and polypyrrole (PPy) nanocomposites was fabricated by in situ polymerization using FeCl3 as initiator. The polymer nanocomposites (PNCs) and pure NITO were characterized by X-ray diffraction, Föurier transform infrared spectroscopy, scanning electron microscopy, electron dispersive X-ray spectroscopy, transmission electron microscopy, etc. Thermo gravimetric and differential thermal analyses showed the enhancement of thermal stability of PNCs than the pure polymer. Electrical conductivity of the PNCs had increased significantly from 0.793 × 10?2 S/cm to 0.450 S/cm with respect to the PPy, and that had been explained by 3-dimensional variable range hopping (VRH) conduction mechanisms. In addition, the specific capacitance of PNCs had increased from 147 F/g to 176 F/g with increasing NITO content than that of pure NITO (26 F/g), presumably due to the growing of mesoporous structure with increasing NITO content in PNCs which reduced the charge transfer resistance significantly. |
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