Enhanced photocatalytic activity of BiVO4 powders synthesized in presence of EDTA for the decolorization of rhodamine B from aqueous solution

Bismuth vanadate (BiVO 4 ) powders were successfully synthesized in presence of EDTA via microwave irradiation and used as photocatalysts in the oxidation reaction of rhodamine B (rhB) under visible light. Different concentrations of EDTA (0.5 to 10%) to chelate Bi 3+ ions were employed on the BiVO...

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Bibliographic Details
Published in:Environmental science and pollution research international 2018-12, Vol.25 (34), p.34123-34130
Main Authors: da Cruz Severo, Eric, Dotto, Guilherme Luiz, Martínez-de la Cruz, Azael, Cuellar, Enrique López, Foletto, Edson Luiz
Format: Article
Language:English
Subjects:
Aquatic Pollution
Aqueous solutions
Atmospheric Protection/Air Quality Control/Air Pollution
Bismuth oxides
Catalytic activity
Chelates
Chemical synthesis
Decoloring
Decolorization
Dyes
Earth and Environmental Science
Ecotoxicology
Edetic acid
Environment
Environmental Chemistry
Environmental Health
Environmental science
Ethylenediaminetetraacetic acids
Fourier transforms
Irradiation
Membrane separation
Morphology
Oxidation
Photocatalysis
Research Article
Rhodamine
Textiles
Vanadate
Vanadates
Waste Water Technology
Water Management
Water Pollution Control
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Summary:Bismuth vanadate (BiVO 4 ) powders were successfully synthesized in presence of EDTA via microwave irradiation and used as photocatalysts in the oxidation reaction of rhodamine B (rhB) under visible light. Different concentrations of EDTA (0.5 to 10%) to chelate Bi 3+ ions were employed on the BiVO 4 synthesis. Under the presence of EDTA, a monoclinic crystalline structure was obtained, whereas a mixture of monoclinic and tetragonal phases was observed in the absence of EDTA. In addition, the use of different EDTA concentrations promoted the formation the different shapes of particles. The BiVO 4 sample synthesized with low concentration of EDTA (0.5%) exhibited about 85% of rhB decolorization in 300 min at pH 7.5. Therefore, this high efficiency can be attributed to a combination of intrinsic properties such as the morphology type and monoclinic structure of BiVO 4 particles.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-018-3370-7