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Plasmonic Photocatalyst Design: Metal—Semiconductor Junction Affecting Photocatalytic Efficiency

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Silver-zinc oxide nanorods (Ag–ZnO NRs) and gold-zinc oxide nanorods (Au–ZnO NRs) plasmonic photocatalysts were fabricated by the deposition of Ag and Au nanoparticles on ZnO NRs. The photocatalysts were studied with electron microscopy, energy dispersive spectroscopy (EDS), UVvis optical absorption and photoluminescence spectroscopy. The effect of type of metals on the ZnO surface on its photocatalytic activity under ultra violet (UV) as well as visible light excitation are investigated and their contribution towards enhanced photo-generated charge separation in terms of the type of junction (Ohmic or Schottky) the metal forms with the semiconductor are explained.
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Keywords: Metal-Semiconductor Catalyst; Ohmic Contact; Photocatalytic Treatment; Plasmonic Photocatalysis; Schottky Contact; Visible Light Photocatalysis

Document Type: Research Article

Affiliations: 1: Nanotechnology, Industrial System Engineering, School of Engineering and Technology, Asian Institute of Technology, P.O. Box 4, Klong Luang, Pathumthani–12120, Thailand 2: Functional Materials, Applied Physics Department, School of Engineering Sciences School, Kungliga Tekniska Högskolan Royal Institute of Technology, Isafjordsgatan 22, SE-16440 Kista-Stockholm, Sweden

Publication date: January 1, 2019

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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