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Enhancement in solar driven water splitting by Au–Pd nanoparticle decoration of electrochemically grown ZnO nanorods

Siavash Moakhar, R ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1007/s10800-016-0981-x
  3. Publisher: Springer Netherlands
  4. Abstract:
  5. Oriented ZnO nanorods were grown directly on fluorine doped tin oxide substrates by a single bath electrodeposition process. A pulse potential at the beginning of growth improved the density and orientation of the nanorods. Pulse potential grown ZnO nanorod films showed better harvesting of visible light and enhanced the light driven water splitting performance in comparison to nanorods grown without any pulse potential. To further improve the water splitting activity, the nanorods were decorated with gold–palladium nanoparticles by sputtering. This caused visible light absorption to increase due to a plasmonic effect and the photoelectrochemical water splitting performance to further double. This further enhancement was also attributed to a catalytic effect as well as a reduction in charge transfer resistance. Graphical Abstract: [Figure not available: see fulltext.]
  6. Keywords:
  7. Charge transfer ; Electrochemistry ; Electrodeposition ; Electrodes ; Electromagnetic wave absorption ; Hydrogen ; Light ; Light absorption ; Nanocomposites ; Nanoparticles ; Nanorods ; Plasmons ; Surface plasmon resonance ; Tin oxides ; Water absorption ; Zinc oxide ; Catalytic ; Charge transfer resistance ; Electrodeposition process ; Fluorine doped tin oxide ; Photoelectrochemical properties ; Photoelectrochemical water splitting ; Pulse electrodeposition ; Visible light absorption ; Gold
  8. Source: Journal of Applied Electrochemistry ; Volume 46, Issue 8 , 2016 , Pages 819-827 ; 0021891X (ISSN)
  9. URL: https://link.springer.com/article/10.1007/s10800-016-0981-x