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Fabrication of Microcrystalline Cellulose/Nano-TiO₂ Composite: Photocatalytic Performance and the Role of Active Species

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Abstract:

This work explores an alternative approach to address the pollution issue of dye residues in water bodies. This study intends to improve sunset yellow (SY) dye degradation efficiency by using microcrystalline cellulose supported-nanoTiO2 composite photocatalysts assisted by UVC illumination. The photocatalysts were constructed using a facile chemical mixing procedure with various ratios of MCC to TiO2 (0.3:1, 0.5:1, and 0.7:1). The characterization was carried out using FTIR to establish their functional groups. The synthesis procedure was constructed to enhance charge carriers’ separation and expand light absorption for high photoactivity. Under natural conditions, SY photodegradation was at its peak with almost complete degradation by using 0.5:1 ratio, with major active species were found to be hvb+ and •OH radicals. The rate constant reached 2.33 × 10-2 min-1 corresponding to pseudo first-order model, exceeding the performance of pure TiO2.

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Periodical:

Materials Science Forum (Volume 1197)

Pages:

109-114

DOI:

https://doi.org/10.4028/p-r9c4Mm

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Online since:

July 2026

Authors:

Zul Adlan Mohd Hir*, Nik Nur Ain Shamime Rosli, Muhammad Aqil Asyraaf Mohd Mahadi, Shaari Daud, Hartini Ahmad Rafaie, Maureen Chijioke- Okere

Keywords:

Microcrystalline Cellulose, Photocatalyst, Sunset Yellow, TiO2, Water Remediation

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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