Title: An inorganic hydrothermal route to photocatalytically active bismuth vanadate
Authors : Zhou, Ying
Vuille, Kathrin
Heel, Andre
Probst, Benjamin
Kontic, Roman
Patzke, Greta R.
Published in : Applied Catalysis A: General
Volume(Issue) : 375
Issue : 1
Pages : 140
Pages to: 148
Issue Date: 2010
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subjects : Hydrothermal synthesis; Oxygen evolution; Bismuth vanadate; Photocatalysis
Subject (DDC) : 540: Chemistry
Abstract: BiVO4 has attracted research interest as one of the most promising visible-light-driven oxidic photocatalysts for water splitting and wastewater treatment. Highly crystalline BiVO4 particles with a homogeneous morphology are now available from a straightforward, one-step hydrothermal protocol. The facile morphology control of BiVO4 particles in the Bi(NO3)3·5H2O/V2O5/K2SO4 hydrothermal system is achieved through K2SO4 as an inorganic additive that brings forward materials with a high photocatalytic activity. BiVO4 particles generated from this inorganic additive-assisted approach outperform BiVO4 materials obtained via other preparative routes in the decomposition of methylene blue (MB) under visible light irradiation. The relations between morphology, crystallinity and photocatalytic O2 evolution in the presence of AgNO3 and FeCl3 as sacrificial reagents were studied with respect to the hydrothermal optimization of material properties. Furthermore, the Bi(NO3)3·5H2O/V2O5/K2SO4 hydrothermal system brings forward potassium vanadate fibers as a second phase that also exhibits promising photocatalytic properties with respect to the decomposition of MB in the presence of visible light.
Departement: School of Engineering
Organisational Unit: Institute of Materials and Process Engineering (IMPE)
Publication type: Article in scientific Journal
DOI : 10.1016/j.apcata.2009.12.031
ISSN: 0926-860X
URI: https://digitalcollection.zhaw.ch/handle/11475/9272
Appears in Collections:Publikationen School of Engineering

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