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Support-Driven Enhancement of WO₃-Based Composite Photocatalysts for Methyl Orange Degradation under UV Light

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Abstract:

WO3-based composite photocatalysts supported on tungsten disulfide (WS2), urea, melamine, and graphene nanoplatelets (GNPs) were synthesized and characterized. The SEM micrographs showed that the support materials had a major impact on the composites' shape. While WO3/WS2 created layered sheets with scattered nanoparticles, WO3/melamine and WO3/urea showed porous and uneven morphologies. Strong interfacial contact was demonstrated by the homogeneous distribution of tiny WO3 particles on crumpled graphene layers in WO3/GNPs. W and O from WO3, as well as S, N, and C elements from the corresponding supports, were verified by EDX. Methyl orange (MO) degradation under light irradiation was used to assess photocatalytic activity. Because of its huge surface area and improved electron mobility, WO3/GNPs showed the highest degrading efficiency. The WO3/WS2 also displayed encouraging activity efficient due to the interfacial charge separation. On the other hand, WO3/urea and WO3/melamine performed moderately, most likely as a result of agglomeration and less conductive supports. With WO3/GNPs emerging as a promising choice for dye degradation and wastewater treatment applications, these findings emphasize the importance of support materials in enhancing WO3-based photocatalysts.

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Periodical:

Materials Science Forum (Volume 1194)

Pages:

151-158

DOI:

https://doi.org/10.4028/p-0zHC1k

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Online since:

June 2026

Authors:

Alina Irwana Muhamad A'srai, Nur Ain Atisy C.M. Khairudin, Nur Adibah Roslan, Khairul Anuar Mat Amin, Mohd Hasmizam Razali*

Keywords:

Composites, Degradation, Hydrothermal, Methyl Orange, Photocatalyst

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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