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모드안사리,Faiz Mohammad,Shahid Pervez Ansari,Santosh Kumar Yadav,Tarique Anwer,조무환 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.4
Electrically conductive HCl-doped multi-walled carbon nanotube (MWCNT)/polyaniline (Pani) nanocomposites were prepared in the presence of cetyl-trimethylammonium bromide by in situ oxidative polymerization of aniline containing different amount of MWCNTs. Thus prepared Pani@MWCNT nanocomposites were characterized by FTIR, XRD, Raman spectroscopy, SEM and TEM. The stability in terms of their electrical conductivity retention was studied under isothermal and cyclic aging conditions. Pani@MWCNT nanocomposites showed increased thermal stability in terms of DC electrical conductivity retention with increasing MWCNT content. One of the Pani@MWCNT nanocomposites was also tested for ammonia sensing which showed good sensing response and high reproducibility.
조무환,모드안사리,Mohammad Mansoob Khan,사지드안자리 대한금속·재료학회 2015 ELECTRONIC MATERIALS LETTERS Vol.11 No.4
Electrically conductive HCl-doped polyaniline (Pani)@titanium dioxide (TiO2) nanocomposites were prepared by the in-situ oxidative polymerization of aniline in the presence of different amounts of TiO2 nanoparticles. The synthesized Pani@TiO2 nanocomposites were characterized by transmission electron microscopy, X-ray diffraction, UV-visible spectroscopy, and thermogravimetric analysis. The stability of the Pani@TiO2 nanocomposites in terms of their electrical conductivity retention was examined under isothermal and cyclic aging conditions, and compared with that of pure Pani. The Pani@TiO2 nanocomposites showed higher thermal stability than pure Pani. The effect of competitive doping/de-doping by TiO2 was examined at different Pani to TiO2 weight ratios. TiO2 at a higher weight percentage was found to be involved in the de-doping type of interaction with Pani, leading to its neutralization, which was found to be similar to the dedoping phenomenon, as in the case of neutralization in basic media. The novel mechanism for this de-doping type of interaction of TiO2 with Pani has also been proposed.
Mudassir Hasan,모드안사리,조무환,이문용 대한금속·재료학회 2015 ELECTRONIC MATERIALS LETTERS Vol.11 No.1
This paper reports the synthesis of HCl-doped Au@polyaniline(Pani) nanocomposite fibers by the in situ oxidative polymerizationof aniline in the presence of gold nanoparticles. Thusprepared nanocomposite fibers were characterized by SEM,TEM, XRD, Raman spectroscopy, XPS, UV-visible diffusedreflectance spectroscopy, TGA, and DSC. The Au@Paninanocomposite fibers showed superior DC electrical conductivityto HCl-doped Pani, which might be due to the increasedmobility of the charge carriers after the incorporation of goldnanoparticle in Pani. Au@Pani also exhibited a better ammoniasensing and recovery response than Pani, which might bedue to the increase in the surface area of Pani after the incorporationof gold nanoparticles.
Mudassir Hasan,모드안사리,조무환,이문용 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.22 No.-
polymerization of aniline in the presence of V2O5 and cetyltrimethylammonium bromide, as a surfactant. The prepared composite nanofibers were characterized by scanning electron microscopy, transmissionelectron microscopy, X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, UV–visible diffused reflectance spectroscopy, thermogravimetric analysis, and differential scanningcalorimetry. The V2O5@Pani composite nanofibers showed higher DC electrical conductivity than Pani,which might be due to the increased mobility of the charge carriers after the incorporation of V2O5. V2O5@Pani also showed a better ammonia sensing and recovery response than Pani due to thesynergistic effect of V2O5 and Pani.