Preparation of nano-TiO2-3,4-dioxyvinylthiophene composite film by an electron-beam radiation grafting method and, its electrochemical performance

Abstract

A nano-TiO2 layer was coated onto the surface of an Indium Tin Oxide (ITO) conductive glass sheet by electrostatic self-assembly, sol-gel, and impregnation and pull methods. The 3, 4-vinyldioxythiophene (EDOT) monomer was grafted onto the surface by electron-beam radiation grafting. Thus, an ITO-TiO2-PEDOT conductive composite film was successfully prepared. Composite films were characterized by Fourier transform infrared spectrometer, X-ray diffractometry, scanning electron microscopy, and contact angle testing. The conductivity of ITO-TiO2-PEDOT (poly 3,4-ethylenedioxythiophene) conductive composite film reached 4×10‒1 S/cm at a dose of 4 kGy/s, and the absorbed dose was 20 kGy, providing a theoretical reference for studies on composite conductive materials produced by techniques involving radiation.

Keywords

• electrostatic self-assembly
• sol-gel
• radiation grafting
• conductive materials