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Title: ZnO:SnO nanorods and nanosheets and their enhanced photocatalytic activity under visible light irradiation

ZnO-SnO nanocomposites were synthesized by a simple hydrothermal method. It was found that Sn concentration acted as a crucial factor in determining the morphology of ZnO-SnO nanostructures, in the presence of ethylenediamine (EDA) as a stabilizing agent. XRD analysis confirmed the formation of ZnO and SnO with good crystallinity. The morphological analysis revealed tin oxide (SnO) nanoparticles coated on the surface of ZnO nanorods and nanosheets. The photocatalytic activity of synthesized samples were evaluated by methylene blue (MB) as a model pollutant under visible light irradiation. Photocatalysis studies revealed that, ZnO-SnO nanocomposites show the enhanced photocatalytic activity compared to ZnO, which could be attributed to the formation of hetero-junction between ZnO and SnO of MB degradation. Sn concentration can extend the light absorption spectra of ZnO to visible light region and enhance the visible light photocatalytic activity. This research could provide new insights to the development of excellent photocatalyst with efficient performance for pollution control.
Authors:
; ;  [1] ;  [2] ; ; ;  [3]
  1. Centre for Nanoscience and Nanotechnology, Department of Physics, SRM University, Kattankulathur, Chennai, 603203, Tamil Nadu (India)
  2. Department of Chemistry, SRM University, Ramapuram, Chennai, 600089, Tamil Nadu (India)
  3. Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8011 (Japan)
Publication Date:
OSTI Identifier:
22490304
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION SPECTRA; COMPARATIVE EVALUATIONS; CONCENTRATION RATIO; HETEROJUNCTIONS; HYDROTHERMAL SYNTHESIS; IRRADIATION; METHYLENE BLUE; MORPHOLOGY; NANOCOMPOSITES; NANOPARTICLES; NANOSTRUCTURES; PHOTOCATALYSIS; SHEETS; SURFACES; TIN OXIDES; VISIBLE RADIATION; X-RAY DIFFRACTION; ZINC OXIDES