Large-scale controllable synthesis of dumbbell-like BiVO{sub 4} photocatalysts with enhanced visible-light photocatalytic activity

Journal Article · Wed Feb 15 00:00:00 EST 2012 · Journal of Solid State Chemistry

OSTI ID:21612920

Yang, Lu ^[1]; Dezhi, Kong; Deyang, Zhang; Yonglei, Jia; Xinwei, Zhang ^[1]

---

1. Department of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000 (China)

The controllable synthesis of novel dumbbell-like BiVO{sub 4} hierarchical nanostructures has been successfully obtained via a simple hydrothermal route. The as-synthesized products were studied by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy and UV-vis absorption spectroscopy. The results showed that the nucleation and growth of the nanodumbbells were governed by an oriented aggregation growth mechanism. It is noteworthy that the concentration of poly(vinyl pyrrolidone) and the volume ratio of H{sub 2}O to CH{sub 3}COOH were crucial to the growth of the final nanoarchitectures. Control experiments were also carried out to investigate the factors which impact on the morphology of the products. Furthermore, the as-prepared BiVO{sub 4} hierarchical nanostructures demonstrated the superior visible-light-driven photocatalytic efficiency, which is helpful for the separation and recycle considering their promising applications in harmful pollutants disposal. - Graphical Abstract: The controllable synthesis of novel dumbbell-like BiVO{sub 4} hierarchical nanostructures has been successfully obtained via a simple hydrothermal route; the as-prepared BiVO{sub 4} hierarchical nanostructures demonstrated the superior visible-light-driven photocatalytic efficiency. Highlights: Black-Right-Pointing-Pointer Dumbbell-like BiVO{sub 4} structures were synthesized and characterized for the first time. Black-Right-Pointing-Pointer The volume ratios of H{sub 2}O to CH{sub 3}COOH were crucial to the final morphologies. Black-Right-Pointing-Pointer Their photocatalytic activity was up to 90% under visible-light irradiation. Black-Right-Pointing-Pointer Dumbbell-like BiVO{sub 4} structures may utilize the pollutant disposal.

• OSTI ID: 21612920
• Journal Information: Journal of Solid State Chemistry, Vol. 186; Other Information: DOI: 10.1016/j.jssc.2011.12.003; PII: S0022-4596(11)00673-6; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ABSORPTION SPECTROSCOPY
ACETIC ACID
CONTROL
EFFICIENCY
IRRADIATION
MORPHOLOGY
NANOSTRUCTURES
PHOTOCATALYSIS
POLLUTANTS
PYRROLIDONES
SCANNING ELECTRON MICROSCOPY
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
VISIBLE RADIATION
X-RAY DIFFRACTION
AMIDES
AZOLES
CARBOXYLIC ACIDS
CATALYSIS
COHERENT SCATTERING
DIFFRACTION
ELECTROMAGNETIC RADIATION
ELECTRON MICROSCOPY
HETEROCYCLIC COMPOUNDS
LACTAMS
MICROSCOPY
MONOCARBOXYLIC ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PYRROLES
RADIATIONS
SCATTERING
SPECTROSCOPY