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Enhanced Photocatalytic Performance and Kinetic Improvement of Reusable W-based POM Composite for Produced Water Treatment
Bulletin of Chemical Reaction Engineering & Catalysis
ISSN 1978-2993
Published 2026-08-30
Publisher Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)
Language eng
Abstract
Produced water treatment remains a major challenge due to its complex contaminant composition and the limited efficiency and reusability of conventional photocatalysts. Polyoxometalate (POM)-based materials offer high redox activity and structural tunability. This study presents a novel tungsten-based polyoxometalate (W-based POM) composite with enhanced photocatalytic performance and kinetic superiority for produced water treatment. The objective of this work was to synthesize a reusable W-based POM composite and systematically evaluate its photocatalytic activity, adsorption behavior, kinetics, and stability. The composite was synthesized via a solvothermal method using Na₂WO₄·2H₂O and DMF. Photocatalytic experiments were performed by varying catalyst dosage (0.1–0.5 g), irradiation time (30-180 min), and reusability cycles. The W-based POM composite exhibited a rhombic polyhedral morphology with a well-organized three-dimensional POM framework, reduced crystallite size (14.8 nm), and compressive lattice strain, contributing to improved charge mobility. Optical analysis revealed a red-shift in the absorption edge, reducing the band gap from 2.80 eV to 2.25 eV and enhancing visible-light utilization. Photocatalytic experiments demonstrated high treatment efficiency, achieving 90% NH₃–N and 84% total dissolved solids (TDS) removal under UV irradiation within 180 minutes at an optimal dosage of 0.3 g. Adsorption behavior followed the Dubinin–Radushkevich and Temkin isotherm models, indicating an ion-exchange-dominated mechanism, while kinetic analysis revealed a multi-step process governed by intraparticle diffusion. The composite maintained stable performance over three consecutive cycles without significant activity loss. Overall, the results highlight the strong potential of W-based POM composites as efficient, reusable, and scalable photocatalysts for advanced produced water treatment. Copyright © 2026 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
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Metadata source: OAI-PMH (metadata jurnal) https://journal.bcrec.id/index.php/bcrec/oai, first harvested 8 Nov 2026, last seen 8 Nov 2026.
Original metadata (oai_dc)
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<dc:title xml:lang="en-US">Enhanced Photocatalytic Performance and Kinetic Improvement of Reusable W-based POM Composite for Produced Water Treatment</dc:title>
<dc:creator>Kusworo, Tutuk Djoko</dc:creator>
<dc:creator>Kumoro, Andri Cahyo</dc:creator>
<dc:creator>Veda, Adalia</dc:creator>
<dc:creator>Mafazan, Rafi</dc:creator>
<dc:creator>Puspa, Meitri Bella</dc:creator>
<dc:creator>Azizah, Dita Aulia</dc:creator>
<dc:creator>Utomo, Dani Puji</dc:creator>
<dc:subject xml:lang="en-US">Polyoxometalate (POM); photocatalysis; produced water treatment; adsorption isotherms; band-gap engineering</dc:subject>
<dc:description xml:lang="en-US">Produced water treatment remains a major challenge due to its complex contaminant composition and the limited efficiency and reusability of conventional photocatalysts. Polyoxometalate (POM)-based materials offer high redox activity and structural tunability. This study presents a novel tungsten-based polyoxometalate (W-based POM) composite with enhanced photocatalytic performance and kinetic superiority for produced water treatment. The objective of this work was to synthesize a reusable W-based POM composite and systematically evaluate its photocatalytic activity, adsorption behavior, kinetics, and stability. The composite was synthesized via a solvothermal method using Na₂WO₄·2H₂O and DMF. Photocatalytic experiments were performed by varying catalyst dosage (0.1–0.5 g), irradiation time (30-180 min), and reusability cycles. The W-based POM composite exhibited a rhombic polyhedral morphology with a well-organized three-dimensional POM framework, reduced crystallite size (14.8 nm), and compressive lattice strain, contributing to improved charge mobility. Optical analysis revealed a red-shift in the absorption edge, reducing the band gap from 2.80 eV to 2.25 eV and enhancing visible-light utilization. Photocatalytic experiments demonstrated high treatment efficiency, achieving 90% NH₃–N and 84% total dissolved solids (TDS) removal under UV irradiation within 180 minutes at an optimal dosage of 0.3 g. Adsorption behavior followed the Dubinin–Radushkevich and Temkin isotherm models, indicating an ion-exchange-dominated mechanism, while kinetic analysis revealed a multi-step process governed by intraparticle diffusion. The composite maintained stable performance over three consecutive cycles without significant activity loss. Overall, the results highlight the strong potential of W-based POM composites as efficient, reusable, and scalable photocatalysts for advanced produced water treatment. Copyright © 2026 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).</dc:description>
<dc:publisher xml:lang="en-US">Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)</dc:publisher>
<dc:date>2026-08-30</dc:date>
<dc:type>info:eu-repo/semantics/article</dc:type>
<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
<dc:type xml:lang="en-US"></dc:type>
<dc:format>application/pdf</dc:format>
<dc:identifier>https://journal.bcrec.id/index.php/bcrec/article/view/20616</dc:identifier>
<dc:identifier>10.9767/bcrec.20616</dc:identifier>
<dc:source xml:lang="en-US">Bulletin of Chemical Reaction Engineering & Catalysis; 2026: BCREC Volume 21 Issue 2 Year 2026 (August 2026); 370-384</dc:source>
<dc:source>1978-2993</dc:source>
<dc:language>eng</dc:language>
<dc:relation>https://journal.bcrec.id/index.php/bcrec/article/view/20616/9933</dc:relation>
<dc:relation>https://journal.bcrec.id/index.php/bcrec/article/downloadSuppFile/20616/6167</dc:relation>
<dc:rights xml:lang="en-US">Copyright (c) 2026 by Authors, Published by BCREC Publishing Group</dc:rights>
<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
Citations and indexing
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Cite this article
APA 7
Kusworo, T. D., Kumoro, A. C., Veda, A., Mafazan, R., Puspa, M. B., Azizah, D. A., & Utomo, D. P. (2026). Enhanced Photocatalytic Performance and Kinetic Improvement of Reusable W-based POM Composite for Produced Water Treatment. Bulletin of Chemical Reaction Engineering & Catalysis, ume, 370–384. https://doi.org/10.9767/bcrec.20616
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IEEE
T. D. Kusworo, A. C. Kumoro, A. Veda, R. Mafazan, M. B. Puspa, D. A. Azizah, and D. P. Utomo, “Enhanced Photocatalytic Performance and Kinetic Improvement of Reusable W-based POM Composite for Produced Water Treatment,” Bulletin of Chemical Reaction Engineering & Catalysis, vol. ume, pp. 370–384, 2026, doi: 10.9767/bcrec.20616.
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