Paper Title:
Investigations on the Photoprotection Ability of TiO2 Coated on Copper
  Abstract

A TiO2 coating when directly applied on copper plate showed an instantaneous ptype behavior, i.e. ennoblement of electrode potential on ultraviolet (UV) illumination though a copper plate when galvanically coupled to an ITO glass coated with TiO2 showed immediate lowering of electrode potential (‘n’-type effect) on illumination under deaerated conditions. The instantaneous p-type effect in the former case was attributed to the presence of a copper oxide layer present between the copper plate and the TiO2 coating. However, a prolonged exposure of the TiO2 coated copper plate showed an n-type effect under illumination after nearly 24 h, following which the electrode potential appeared stable and highly negative. This observation indicated that the photogenerated electrons in TiO2 are capable of reducing the copper oxide layer to ultimately realize the n-type effect of TiO2. The n-type effect could not be observed in aerated electrolyte solutions. The effect of different conditions in the ambience on the photoeffect of copper coated TiO2 will be discussed.

  Info
Periodical
Materials Science Forum (Volumes 475-479)
Main Theme
Edited by
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
Pages
297-300
DOI
10.4028/www.scientific.net/MSF.475-479.297
Citation
R. Subasri, T. Shinohara, "Investigations on the Photoprotection Ability of TiO2 Coated on Copper", Materials Science Forum, Vols. 475-479, pp. 297-300, 2005
Online since
January 2005
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Sylvain Garaud, Rita Vos, Denis Shamiryan, Vasile Paraschiv, Paul W. Mertens, Jan Fransaer, Stefan De Gendt
87
Authors: Nikolay N. Petrov, Tatyana V. Koval, Irina V. Falina, Roman V. Gorokhov, Nikolay V. Sheldeshov, Nikolay N. Bukov
Chapter 1: Corrosion and Surface Engineering, Corrosion Protection
Abstract:In this paper substantiated the possibility of creating on the basis of epoxy-polyelectrolyte composites of anticorrosive coatings sensitive...
123
Authors: Jin A Jeong, Chung Kuk Jin
Chapter 3: Materials and Technologies in Construction
Abstract:This study is to acquire the confirmation data regarding the impressed current cathodic protection (ICCP) system by using the variable...
365