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

Journal Article · Sat Nov 15 00:00:00 EST 2014 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2014.08.004· OSTI ID:22420644

Qi, Xuemei ^[1]; Zhu, Xinyuan ^[1]; Wu, Jiang ^[2]; Wu, Qiang ^[2]; Li, Xian ^[3]; Gu, Miaoli ^[2]

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1. School of Chemistry and Chemical Engineering, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, Shanghai 200240 (China)
2. School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090 (China)
3. School of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090 (China)

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 performance after optimizing the ethylenediamine content. The best degradation ratio of Rhodamine B could reach about 87% after 140 min visible-light irradiation.

• OSTI ID: 22420644
• Journal Information: Materials Research Bulletin, Vol. 59; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

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