Poly ortho aminophenol/TiO2 nanocomposite: Electrosynthesis and characterization

✍ Scribed by Ehsani, A.; Mahjani, M.G.; Bordbar, M.; Moshrefi, R.

• Book ID: 120441046
• Publisher: Elsevier Science
• Year: 2013
• Tongue: English
• Weight: 763 KB
• Volume: 165
• Category: Article
• ISSN: 0379-6779
• DOI: 10.1016/j.synthmet.2013.01.004

✦ Synopsis

This paper aims to prepare the poly ortho aminophenol (POAP)/nanocrystalline TiO 2 composite film. Polymerization of ortho aminophenol (OAP) proceeded after ultrasonic irradiation of nanocrystalline TiO 2 . The aggregation of nano TiO 2 can be reduced under ultrasonic irradiation, and the nanoparticles can be redispersed in the aqueous solution. The POAP deposits on the surface of the nanoparticle, which leads to a core-shell structure. Nanocomposite was characterized by FT-IR spectroscopy, UV-vis spectroscopy and transmission electron microscopy (TEM). The results indicate that a strong interaction exist at the interface of POAP and nano-TiO 2 . The presence of nanocrystalline TiO 2 strengthens the UV absorption of POAP and leads to a blue shift of the -polaron absorption of POAP. The electrochemical results indicate that a strong interaction exist at the interface of POAP and nano-TiO 2 . Electrochemical properties of film were investigated by using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS).