Photocatalytic Efficacy of 1-Dimensional Nanocomposite Electrode

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

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The photocatalytic splitting of water into H2 and O2 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 Ti02 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 T1O2 shell provides the photocatalytic functionalities. In addition, the built-in-potential at the interface between TCO core and the T1O2 shell improves the collection of charge carriers from T1O2 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
PublisherJohn Wiley and Sons
Pages9-13
Number of pages5
ISBN (Print)9781118291382
DOIs
Publication statusPublished - 2012 May 15
Externally publishedYes

Keywords

  • Core-shell
  • Nanowire
  • Photocatalysis

ASJC Scopus subject areas

  • Materials Science(all)

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