Preparation and optical properties of Bi2FeVMoO10 nanoparticles structurally derived from cation-substitutions in Scheelite-type BiVO4

Journal Article · Sun Apr 15 00:00:00 EDT 2018 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2017.11.023· OSTI ID:22805112

Wang, Zuoshan; Feng, Yongyi; Cao, Lei; Xue, Mingqiang ^[1]; Shen, Kaixuan; Zheng, Min ^[2]

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1. State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123 (China)
2. College of Textile and Clothing Engineering, Soochow University, Suzhou 215006 (China)

Highlights: • Bi{sub 2}FeVMoO{sub 10} with Scheelite structure was synthesized by co-precipitation. • The structural Rietveld refinement was finished. • The nanoparticles (50–80 nm) show high absorption in UV-vis region (E{sub g} = 2.07 eV). • Photocatalysis of Bi{sub 2}FeVMoO{sub 10} was markedly enhanced than BiVO{sub 4} and Bi{sub 2}Mo{sub 3}O{sub 12}. • The mechanism of this photocatalysis system was proposed. - Abstract: Bi{sub 2}FeVMoO{sub 10} [(Bi{sub 0.8}Fe{sub 0.4})(Mo{sub 0.4}V{sub 0.4})O{sub 4}] was prepared via facile co-precipitation route. It has a tetragonal Scheelite structure derived by cation substitutions in monoclinic BiVO{sub 4}. Rietveld refinements of Bi{sub 2}FeVMoO{sub 10} were performed in body-centered tetragonal Scheelite. The morphological property was tested via SEM, EDX, and TEM measurements. The optical property was measured by UV-vis absorption spectrum. Bi{sub 2}FeVMoO{sub 10} shows a narrower band gap of 2.07 eV than the monoclinic BiVO{sub 4} and α-Bi{sub 2}Mo{sub 3}O{sub 12}. The photo-degradation experiments of Rhodamine-B (RhB) dye solutions were conducted. Bi{sub 2}FeVMoO{sub 10} nanoparticles have more efficient photocatalytic ability on RhB degradation than that of BiVO{sub 4} and α-Bi{sub 2}Mo{sub 3}O{sub 12}. The results were discussed on the Scheelite structure characteristics such as complicated optical absorption centers, loose space in the lattice because of the vacancies, large dispersion in the CB and VB electronic components and the Fe{sup 3+}/Fe{sup 2+} redox couples. This multicomponent Scheelite oxide could have potential applications in environment protection.

• OSTI ID: 22805112
• Journal Information: Materials Research Bulletin, Vol. 100; Other Information: Copyright (c) 2017 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

77 NANOSCIENCE AND NANOTECHNOLOGY
ABSORPTION SPECTRA
BISMUTH COMPOUNDS
CALCIUM TUNGSTATES
CATIONS
COPRECIPITATION
FERRITES
IRON IONS
MOLYBDENUM OXIDES
MONOCLINIC LATTICES
NANOPARTICLES
OPTICAL PROPERTIES
PHOTOCATALYSIS
RHODAMINES
SCANNING ELECTRON MICROSCOPY
SEMICONDUCTOR MATERIALS
TRANSMISSION ELECTRON MICROSCOPY
ULTRAVIOLET SPECTRA
VACANCIES
VANADATES