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Title: Controlled synthesis of BiVO{sub 4} with multiple morphologies via an ethylenediamine-assisted hydrothermal method

Graphical abstract: BiVO{sub 4} samples with various morphologies were synthesized via a simple ethylenediamine (EN) assisted hydrothermal route. One of the mixed crystal phase with spherical and porous morphology showed excellent photocatalytic activity and about 90% Rhodamine B was degraded after 140 min visible light irradiation. - Highlights: • BiVO{sub 4} samples with various morphologies were synthesized by hydrothermal method. • Ethylenediamine mainly acts as alkaline source to adjust pH values of precursor. • BiVO{sub 4} with spherical morphology has excellent photocatalytic activity. - Abstract: In this work, BiVO{sub 4} particles with different crystal structures and morphologies including hexahedral, spherical porous and hyperbranched ones were fabricated in the presence of ethylenediamine by hydrothermal process. The as-fabricated samples were well characterized by X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, Raman spectroscopy and ultraviolet–visible absorption spectroscopy. The results showed that the morphology and crystal structure of BiVO{sub 4} particles could be well controlled by only changing the ethylenediamine content in the deionized water solution. Photocatalytic activity of the samples was evaluated by the degradation of Rhodamine B under visible-light irradiation. It was shown that BiVO{sub 4} sample with spherical porous morphology and mixed crystal phase exhibited the best photocatalytic performancemore » after optimizing the ethylenediamine content. The best degradation ratio of Rhodamine B could reach about 87% after 140 min visible-light irradiation.« less
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [2] ;  [3] ;  [4] ;  [3]
  1. School of Chemistry and Chemical Engineering, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai 200240 (China)
  2. (China)
  3. School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090 (China)
  4. School of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090 (China)
Publication Date:
OSTI Identifier:
22420644
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 59; Other Information: Copyright (c) 2014 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; ABSORPTION SPECTROSCOPY; AQUEOUS SOLUTIONS; BISMUTH COMPOUNDS; CRYSTAL STRUCTURE; CRYSTALS; HYDROTHERMAL SYNTHESIS; IRRADIATION; MORPHOLOGY; PH VALUE; PHOTOCATALYSIS; POROUS MATERIALS; RAMAN SPECTROSCOPY; SCANNING ELECTRON MICROSCOPY; SEMICONDUCTOR MATERIALS; ULTRAVIOLET RADIATION; VANADATES; X-RAY DIFFRACTION