Synthesis and Electrochemical Studies of TiO₂ – Pani Nanocomposite

Abstract

Aniline was polymerized with TiO2 by chemical oxidation method using Potassium perdisulphate. The solubility of the chemically prepared polymer–ceramic nanocomposite was ascertained and it showed good solubility in DMSO and DMF. The Pani–TiO2 nanocomposite was characterized by UV–Vis, FTIR spectral studies. Amine vibration observed at 1593 cm-1 was shifted to lower wave numbers when the polymer–ceramic nanocomposites were formed. The X-ray diffraction studies revealed the formation of nano sized (26 nm) crystalline polymer. SEM analysis showed mixed granular nature of the polymer–ceramic nanocomposite. EDAX analysis shows the presence of Ti, C and N. Cyclic Voltammetric studies exhibit good adherent behaviour on electrode surface at pH 1.0. It showed the presence of oxidation peaks at 0.271V and 0.623V and reduction peaks at 0.832 and 0.493V. CV, Chronoamperometric and chronocoulometric studies were also carried out at inert as well as oxidation atmosphere.

Construction of PANI/Sb2S3 p-n Junction Photoanode for Enhancing Photoelectrochemical Water Oxidation

“…The sharp characteristic peaks at 644 cm −1 and 742 cm −1 may be corresponding to the Sn-O bonds and Sb-S bonds 23 The typical peaks of PANI have represented clearly, which centered at 1572 cm −1 and 1477 cm −1 and attributed to C=N and C=C stretching vibration for the quinonoid and benzenoid units of PANI. 17,24 The absorption peaks at approximately 1296 cm −1 and 1125 cm −1 are assigned to C-N stretching mode of benzenoid unit and the quinonoid unit. 21,25 Absorptions at around 1242 cm −1 is the nature of protonated PANI.…”