Activation effect of silver nanoparticles on the photoelectrochemical performance of mesoporous TiO2 nanospheres photoanodes for water oxidation reaction

Prabhakarn Arunachalam, Mabrook S. Amer, Mohammed A. Ghanem, Abdullah M. Al-Mayouf, Dongyuan Zhao

Research output: Contribution to journalArticleResearchpeer-review

18 Citations (Scopus)

Abstract

This work reports the photodeposition of Ag nanoparticles onto mesoporous TiO2 (m-TiO2) pre-formed by the evaporation-induced self-assembly method. Photoanodes of Ag/m-TiO2 assembled by electrophoretic disclose a superior photoelectrochemical (PEC) performance for water oxidation reaction related to m-TiO2. The photoanodes physicochemical investigations witness the even arrangement of m-TiO2 nanospheres particles over the substrates. The PEC study displays a steady photocurrent density of 1 mAcm-2 at -1.0 V vs SCE was attained for Ag/m-TiO2 photoanodes in visible light illumination and it is nearly twofold enhancements in comparison with m-TiO2 photoanodes. The observed superior PEC nature was attributed to the reduced band-gap energy and charge recombination that caused from the incorporation of plasmonic photodeposited Ag nanoparticles on m-TiO2 nanospheres photoanodes.

Original languageEnglish
Pages (from-to)11346-11355
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume42
Issue number16
DOIs
Publication statusPublished - 20 Apr 2017
Externally publishedYes

Keywords

  • Electrophoretic deposition
  • Mesoporous TiO nanospheres
  • Photoelectrochemistry
  • Water oxidation reaction

Cite this