Photocatalytic efficacy of 1-dimensional nanocomposite electrode

Jung Kun Lee, Bo Ding, Jun Hong Noh, Kug Sun Hong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The photocatalytic splitting of water into H 2 and O 2 by oxide nanoparticles has received much attention. However, the full potential of photo-catalysts for efficient hydrogen generation out of water has not been fully realized yet due to unresolved limitations including the low electrical conductivity and ineffective carrier extraction. Here, we report composite oxide materials consisting of 1-dimensional (1-D) transparent conducting oxide (TCO) core and TiO 2 shell. Highly conductive ITO nanowires were grown on a flexible SUS mesh as a core component. The photoelectrodes consisting of these 1-D nanocomposites have increased carrier mobility due to the TCO core, while the TiO 2 shell provides the photocatalytic functionalities. In addition, the built-in-potential at the interface between TCO core and the TiO 2 shell improves the collection of charge carriers from TiO 2 to TCO. These factors altogether contribute to increasing the photocurrent of the device under light.

Original languageEnglish
Title of host publicationEnergy Technology 2012
Subtitle of host publicationCarbon Dioxide Management and Other Technologies - Held During the TMS 2012 Annual Meeting and Exhibition
Pages9-13
Number of pages5
Publication statusPublished - 2012 May 15
Externally publishedYes
EventEnergy Technology 2012: Carbon Dioxide Management and Other Technologies - TMS 2012 Annual Meeting and Exhibition - Orlando, FL, United States
Duration: 2012 Mar 112012 Mar 15

Publication series

NameTMS Annual Meeting

Conference

ConferenceEnergy Technology 2012: Carbon Dioxide Management and Other Technologies - TMS 2012 Annual Meeting and Exhibition
CountryUnited States
CityOrlando, FL
Period12/3/1112/3/15

Keywords

  • Core-shell
  • Nanowire
  • Photocatalysis

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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  • Cite this

    Lee, J. K., Ding, B., Noh, J. H., & Hong, K. S. (2012). Photocatalytic efficacy of 1-dimensional nanocomposite electrode. In Energy Technology 2012: Carbon Dioxide Management and Other Technologies - Held During the TMS 2012 Annual Meeting and Exhibition (pp. 9-13). (TMS Annual Meeting).