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Microtubular cellulose-derived kapok fibre as a solid electron donor for boosting photocatalytic H2O2 production over C-doped g-C3N4 hybrid complexation
Carbohydrate Polymers ( IF 10.7 ) Pub Date : 2023-06-08 , DOI: 10.1016/j.carbpol.2023.121096
Nur Shamimie Nadzwin Hasnan 1 , Mohamad Azuwa Mohamed 2 , Nurul Atikah Nordin 1 , Wan Nor Roslam Wan Ishak 3 , Mohammad B Kassim 2
Affiliation  

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/t-KF 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.



中文翻译:

微管状纤维素衍生的木棉纤维作为固体电子供体,通过 C 掺杂的 g-C3N4 杂化络合促进光催化 H2O2 的产生

纤维素在光催化中继续发挥着重要的新兴作用,其有利的特性,例如富含电子的羟基,可以增强光催化反应的性能。该研究首次利用具有微管结构(t-KF)的木棉纤维作为固体电子供体,通过配体到金属的电荷转移增强C掺杂gC 3 N 4 (CCN)的光催化活性(LMCT)改善过氧化氢(H 2 O 2)生产性能。通过各种表征技术证实,在琥珀酸(SA)作为交联剂的存在下,通过简单的水热方法成功开发了由 CCN 接枝在 t-KF 上组成的杂化复合物。CCN和t-KF之间的络合形成使得CCN-SA/t-KF样品在可见光照射下表现出比原始gC 3 N 4更高的光催化活性以产生H 2 O 2。CCN-SA/t-KF增强的物理化学和光电性能意味着LMCT机制对于提高光催化活性至关重要。这项研究促进利用独特的 t-KF 材料特性来开发低成本、高性能的纤维素基 LMCT 光催化剂。

更新日期:2023-06-09
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