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Title: Converting Y(OH){sub 3} nanofiber bundles to YVO{sub 4} polyhedrons for photodegradation of dye contaminants

Highlights: • YVO{sub 4} polyhedrons were prepared from Y(OH){sub 3} nanofiber bundles through a hydrothermal conversion process. • In contrast to the bulk oxide, the photocatalytic performance of the polyhedrons was much improved. • The main active species involved in photocatalytic oxidative reaction were also investigated. - Abstract: This paper reports a hydrothermal conversion process of rare earth microstructures, Y(OH){sub 3} nanofiber bundles, into YVO{sub 4} polyhedrons, together with the investigation on the related photocatalytic properties. The as-synthesized samples were characterized by a variety of techniques, including XRD, SEM, TEM and UV–vis diffuse reflectance spectroscopy. The photocatalytic activities of YVO{sub 4} polyhedrons were comparatively evaluated by the photodegradation of Rhodamine B and methylene blue. In contrast to the bulk oxide, the photocatalytic performance of the polyhedrons was much improved. The mechanism and the main active species involved in photocatalytic oxidative reaction were also investigated through the carriers trapping experiments.
Authors:
 [1] ;  [2] ; ;  [1] ;  [1]
  1. School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22475855
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 68; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DECOMPOSITION; METHYLENE BLUE; MICROSTRUCTURE; NANOSTRUCTURES; OXIDATION; PERFORMANCE; PHOTOCATALYSIS; POLLUTANTS; SCANNING ELECTRON MICROSCOPY; SPECTROSCOPY; TRANSMISSION ELECTRON MICROSCOPY; VANADATES; X-RAY DIFFRACTION; YTTRIUM COMPOUNDS; YTTRIUM HYDROXIDES