On the photocatalytic degradation of phenol and dichloroacetate by BiVO4 : the need of a sacrificial electron acceptor

Castillo, Nikola C.; Ding, Laura; Heel, Andre; Graule, Thomas; Pulgarin, Cesar

doi:10.1016/j.jphotochem.2010.08.021

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	On the photocatalytic degradation of phenol and dichloroacetate by BiVO4 : the need of a sacrificial electron acceptor
Authors:	Castillo, Nikola C. Ding, Laura Heel, Andre Graule, Thomas Pulgarin, Cesar
DOI:	10.1016/j.jphotochem.2010.08.021
Published in:	Journal of Photochemistry and Photobiology A: Chemistry
Volume(Issue):	216
Issue:	2-3
Page(s):	221
Pages to:	227
Issue Date:	Dec-2010
Publisher / Ed. Institution:	Elsevier
ISSN:	1010-6030
Language:	English
Subjects:	Bismuth vanadate; Visible light photocatalysis; Hydrogen peroxide; Electron scavenger
Subject (DDC):	540: Chemistry
Abstract:	The photodegradation of phenol and dichloroacetic acid (DCAA) by BiVO4 was studied in the absence as well as presence of selected electron scavengers. The experiments were performed under the visible (vis) irradiation of aqueous solutions over a wide pH range (1-13). Phenol was photocatalytically degraded by BiVO4 into p-benzoquinone below pH 3 and into an open-ring structure at pH 13. Methylene blue (MB) accelerated the reaction below the isoelectric point of BiVO4 and did not undergo significant degradation. In presence of H2O2, phenol was rapidly degraded up to pH 9. The degradation rates are two orders of magnitude higher than in absence of electron scavenger. The degradation of dichloroacetic acid was only possible in presence of H2O2. High initial concentrations of H2O2 inhibit the reaction and its consumption is very fast. Sequential additions of this sacrificial electron acceptor (SEA) enables the total degradation of a 1 mM DCAA solution.
URI:	https://digitalcollection.zhaw.ch/handle/11475/9275
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	School of Engineering
Organisational Unit:	Institute of Materials and Process Engineering (IMPE)
Appears in collections:	Publikationen School of Engineering

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Castillo, N. C., Ding, L., Heel, A., Graule, T., & Pulgarin, C. (2010). On the photocatalytic degradation of phenol and dichloroacetate by BiVO4 : the need of a sacrificial electron acceptor. Journal of Photochemistry and Photobiology A: Chemistry, 216(2-3), 221–227. https://doi.org/10.1016/j.jphotochem.2010.08.021

Castillo, N.C. et al. (2010) ‘On the photocatalytic degradation of phenol and dichloroacetate by BiVO4 : the need of a sacrificial electron acceptor’, Journal of Photochemistry and Photobiology A: Chemistry, 216(2-3), pp. 221–227. Available at: https://doi.org/10.1016/j.jphotochem.2010.08.021.

N. C. Castillo, L. Ding, A. Heel, T. Graule, and C. Pulgarin, “On the photocatalytic degradation of phenol and dichloroacetate by BiVO4 : the need of a sacrificial electron acceptor,” Journal of Photochemistry and Photobiology A: Chemistry, vol. 216, no. 2-3, pp. 221–227, Dec. 2010, doi: 10.1016/j.jphotochem.2010.08.021.

CASTILLO, Nikola C., Laura DING, Andre HEEL, Thomas GRAULE und Cesar PULGARIN, 2010. On the photocatalytic degradation of phenol and dichloroacetate by BiVO4 : the need of a sacrificial electron acceptor. Journal of Photochemistry and Photobiology A: Chemistry. Dezember 2010. Bd. 216, Nr. 2-3, S. 221–227. DOI 10.1016/j.jphotochem.2010.08.021

Castillo, Nikola C., Laura Ding, Andre Heel, Thomas Graule, and Cesar Pulgarin. 2010. “On the Photocatalytic Degradation of Phenol and Dichloroacetate by BiVO4 : The Need of a Sacrificial Electron Acceptor.” Journal of Photochemistry and Photobiology A: Chemistry 216 (2-3): 221–27. https://doi.org/10.1016/j.jphotochem.2010.08.021.

Castillo, Nikola C., et al. “On the Photocatalytic Degradation of Phenol and Dichloroacetate by BiVO4 : The Need of a Sacrificial Electron Acceptor.” Journal of Photochemistry and Photobiology A: Chemistry, vol. 216, no. 2-3, Dec. 2010, pp. 221–27, https://doi.org/10.1016/j.jphotochem.2010.08.021.