Journal
CARBOHYDRATE POLYMERS
Volume 317, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2023.121096
Keywords
Cellulose; Hydrogen peroxide production; Crosslinking; Ligand-to-metal-charge-transfer
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This study explores the use of kapok fiber with microtubular structure as a solid electron donor to enhance the photocatalytic activity of C-doped g-C3N4. The hybrid complex of CCN grafted on t-KF is successfully developed, resulting in higher photocatalytic activity for H2O2 production under visible light irradiation.
Cellulose continues to play an important and emerging role in photocatalysis, and its favourable properties, such as electron-rich hydroxyl groups, could enhance the performance of photocatalytic reactions. For the first time, this study exploited the kapok fibre with microtubular structure (t-KF) as a solid electron donor to enhance the photocatalytic activity of C-doped g-C3N4 (CCN) via ligand-to-metal-charge-transfer (LMCT) to improve hydrogen peroxide (H2O2) production performance. As confirmed by various characterisation techniques, the hybrid complex consisting of CCN grafted on t-KF was successfully developed in the presence of succinic acid (SA) as a cross-linker via a simple hydrothermal approach. The complexation formation between CCN and t-KF results in the CCN-SA/t-KF sample displaying a higher photocatalytic activity than pristine g-C3N4 to produce H2O2 under visible light irradiation. The enhanced physicochemical and optoelectronic properties of CCN-SA/tKF imply that the LMCT mechanism is crucial in improving photocatalytic activity. This study promotes utilising the unique t-KF material's properties to develop a low-cost and high-performance cellulose-based LMCT photocatalyst.
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