Influence of Plasmonic Au Nanoparticles on the Photoactivity of Fe₂O₃ Electrodes for Water Splitting

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Abstract

An experimental study of the influence of gold nanoparticles on α-Fe₂O₃ photoanodes for photoelectrochemical water splitting is described. A relative enhancement in the water splitting efficiency at photon frequencies corresponding to the plasmon resonance in gold was observed. This relative enhancement was observed only for electrode geometries with metal particles that were localized at the semiconductor-electrolyte interface, consistent with the observation that minority carrier transport to the electrolyte is the most significant impediment to achieving high efficiencies in this system.

Keywords:

Photoelectrochemical water splitting; Fe₂O₃; iron oxide; hematite; Au nanoparticles; surface plasmon; hydrogen; solar energy; aerosol; spray pyrolysis; flame aerosol reactor

Citing Articles

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This article has been cited by 5 ACS Journal articles (5 most recent appear below).

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  Plasmon Bleaching Dynamics in Colloidal Gold–Iron Oxide Nanocrystal Heterodimers

  Alberto Comin, Kseniya Korobchevskaya, Chandramohan George, Alberto Diaspro, and Liberato Manna
  Nano Letters2012 12 (2), 921-926

  • Plasmon Bleaching Dynamics in Colloidal Gold–Iron Oxide Nanocrystal Heterodimers

    Alberto Comin, Kseniya Korobchevskaya, Chandramohan George, Alberto Diaspro, and Liberato Manna
    Nano Letters2012 12 (2), 921-926

    Colloidal nanocrystal heterodimers composed of a plasmonic and a magnetic domain have been widely studied as potential materials for various applications in nanomedicine, biology, and photocatalysis. One of the most popular nanocrystal heterodimers is ...

    Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
• 

  Plasmon-Enhanced Photocatalytic Activity of Iron Oxide on Gold Nanopillars

  Hanwei Gao, Chong Liu, Hoon Eui Jeong, and Peidong Yang
  ACS Nano2012 6 (1), 234-240

  • Plasmon-Enhanced Photocatalytic Activity of Iron Oxide on Gold Nanopillars

    Hanwei Gao, Chong Liu, Hoon Eui Jeong, and Peidong Yang
    ACS Nano2012 6 (1), 234-240

    Photocatalytic water splitting represents a promising way to produce renewable hydrogen fuel from solar energy. Ultrathin semiconductor electrodes for water splitting are of particular interest because the optical absorption occurs in the region where ...

    Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
• 

  Plasmonic Enhancements of Photocatalytic Activity of Pt/n-Si/Ag Photodiodes Using Au/Ag Core/Shell Nanorods

  Yongquan Qu, Rui Cheng, Qiao Su, and Xiangfeng Duan
  Journal of the American Chemical Society2011 133 (42), 16730-16733

  • Plasmonic Enhancements of Photocatalytic Activity of Pt/n-Si/Ag Photodiodes Using Au/Ag Core/Shell Nanorods

    Yongquan Qu, Rui Cheng, Qiao Su, and Xiangfeng Duan
    Journal of the American Chemical Society2011 133 (42), 16730-16733

    We report the plasmonic enhancement of the photocatalytic properties of Pt/n-Si/Ag photodiode photocatalysts using Au/Ag core/shell nanorods. We show that Au/Ag core/shell nanorods can be synthesized with tunable plasmon resonance frequencies and then ...

    Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
• 

  Plasmon Enhanced Solar-to-Fuel Energy Conversion

  Isabell Thomann, Blaise A. Pinaud, Zhebo Chen, Bruce M. Clemens, Thomas F. Jaramillo, and Mark L. Brongersma
  Nano Letters2011 11 (8), 3440-3446

  • Plasmon Enhanced Solar-to-Fuel Energy Conversion

    Isabell Thomann, Blaise A. Pinaud, Zhebo Chen, Bruce M. Clemens, Thomas F. Jaramillo, and Mark L. Brongersma
    Nano Letters2011 11 (8), 3440-3446

    Future generations of photoelectrodes for solar fuel generation must employ inexpensive, earth-abundant absorber materials in order to provide a large-scale source of clean energy. These materials tend to have poor electrical transport properties and ...

    Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
• 

  Gold, Platinum, and Aluminum Nanodisk Plasmons: Material Independence, Subradiance, and Damping Mechanisms

  Igor Zorić, Michael Zäch, Bengt Kasemo, and Christoph Langhammer
  ACS Nano2011 5 (4), 2535-2546

  • Gold, Platinum, and Aluminum Nanodisk Plasmons: Material Independence, Subradiance, and Damping Mechanisms

    Igor Zorić, Michael Zäch, Bengt Kasemo, and Christoph Langhammer
    ACS Nano2011 5 (4), 2535-2546

    Localized surface plasmon resonances (LSPR) are collective electronic excitations in metallic nanoparticles. The LSPR spectral peak position, as a function of nanoparticle size and material, is known to depend primarily on dynamic depolarization and ...

    Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links

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