CaltechAUTHORS
  A Caltech Library Service

Effect of Cathodic Polarization of n-TiO_2 Thin Films on Their Photoresponse towards Water Splitting Reactions

Frites, Mourad and Khan, Shahed U. M. (2014) Effect of Cathodic Polarization of n-TiO_2 Thin Films on Their Photoresponse towards Water Splitting Reactions. ECS Electrochemistry Letters, 3 (12). F44-F46. ISSN 2162-8726. http://resolver.caltech.edu/CaltechAUTHORS:20141205-075155064

[img]
Preview
PDF - Published Version
Creative Commons Attribution.

283Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20141205-075155064

Abstract

Cathodic reduction of Titanium oxide (n-TiO_2) thin films was investigated as an alternative approach to customary hydrogen modification of n-TiO_2 under hydrogen gas stream at high temperature. Hydrogen modification of n-TiO_2 was carried out electrochemically under cathodic polarization. The photo-response of the electrochemically hydrogen modified n-TiO_2 (HM-n-TiO_2) exhibited a four-fold enhancement in their photoresponse compared to n-TiO_2 during water splitting under solar simulated light. The photoactivity of HM-n-TiO_2 suffers a substantial decrease after heat-treatment at 200°C, remarkably the photoactivity of these samples was fully repaired after re-hydrogenation under similar conditions. The electrodes were characterized using electrochemical and spectroscopic techniques.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1149/2.0071412eel DOIArticle
http://eel.ecsdl.org/content/3/12/H44PublisherArticle
Alternate Title:Effect of Cathodic Polarization of n-TiO2 Thin Films on Their Photoresponse towardsWater Splitting Reactions
Additional Information:© 2014 The Author(s). Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited. Manuscript submitted August 13, 2014; revised manuscript received October 13, 2014. Published October 21, 2014. This was Paper 775 presented at the Orlando, Florida, Meeting of the Society, May 11-15, 2014. We gratefully acknowledge Dr. John Baltrus of NETL, DOE, Pittsburgh taking the XPS of n-TiO_2 and HM-n-TiO_2 samples.
Record Number:CaltechAUTHORS:20141205-075155064
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20141205-075155064
Official Citation:Mourad Frites and Shahed U. M. Khan Effect of Cathodic Polarization of n-TiO2 Thin Films on Their Photoresponse towards Water Splitting Reactions ECS Electrochem. Lett. 2014 3(12): H44-H46; doi:10.1149/2.0071412eel
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:52417
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:09 Dec 2014 22:53
Last Modified:09 Dec 2014 22:55

Repository Staff Only: item control page