Efficient photoelectrochemical real textile wastewater detoxification using photoanodes of C 3 N 4 -BiVO 4

Photoelectrochemical systems utilizing solar energy have garnered significant attention for their sustainability in remediating contaminated water. This study focuses on advancing photoanode development through the utilization of carbon nitrides (C N ) and bismuth vanadate (BiVO ), two promising sem...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2024-03, Vol.352, p.141315
Main Authors: Gonzaga, Isabelle M D, Gonçalves, Roger, Fernandes, Carlos H M, Assis, Marcelo, Teixeira, Ivo F, Mascaro, Lucia H
Format: Article
Language:English
Subjects:
Carbon
Electrons
Semiconductors
Textiles
Wastewater
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Summary:Photoelectrochemical systems utilizing solar energy have garnered significant attention for their sustainability in remediating contaminated water. This study focuses on advancing photoanode development through the utilization of carbon nitrides (C N ) and bismuth vanadate (BiVO ), two promising semiconductor materials renowned for their efficient electron-hole pair separation leading to enhanced photocatalytic activity. Four distinct materials were synthesized and compared: BiVO over C N , C N over BiVO , and pristine BiVO and C N . Upon electrochemical analysis, the C N -BiVO heterostructure exhibited the highest photoelectrocatalytic charge transfer constant, mobility, and lifetime of charge carriers. Capitalizing on these exceptional properties, the composite was applied to remove organic matter real effluent from the textile industry. The photoelectrodegradation of the effluent demonstrated substantial removal of Total Organic Carbon (TOC) and the generation of low toxicity degradation products, accompanied by low energy consumption. The compelling results underscore the high potential of the synthesized C N -BiVO heterostructure for industrial applications, particularly in addressing environmental challenges associated with textile industry effluents.
ISSN:1879-1298