Academic Journal
Boosting the Activation of Molecular Oxygen and the Degradation of Rhodamine B in Polar-Functional-Group-Modified g-C3N4
| العنوان: | Boosting the Activation of Molecular Oxygen and the Degradation of Rhodamine B in Polar-Functional-Group-Modified g-C3N4 |
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| المؤلفون: | Jing Chen, Minghua Yang, Hongjiao Zhang, Yuxin Chen, Yujie Ji, Ruohan Yu, Zhenguo Liu |
| المصدر: | Molecules, Vol 29, Iss 16, p 3836 (2024) |
| بيانات النشر: | MDPI AG, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Organic chemistry |
| مصطلحات موضوعية: | polar functional group, g-C3N4, degradation, visible-light photocatalysis, Organic chemistry, QD241-441 |
| الوصف: | Molecular oxygen activation often suffers from high energy consumption and low efficiency. Developing eco-friendly and effective photocatalysts remains a key challenge for advancing green molecular oxygen activation. Herein, graphitic carbon nitride (g-C3N4) with abundant hydroxyl groups (HCN) was synthesized to investigate the relationship between these polar groups and molecular oxygen activation. The advantage of the hydroxyl group modification of g-C3N4 included narrower interlayer distances, a larger specific surface area and improved hydrophilicity. Various photoelectronic measurements revealed that the introduced hydroxyl groups reduced the charge transfer resistance of HCN, resulting in accelerated charge separation and migration kinetics. Therefore, the optimal HCN-90 showed the highest activity for Rhodamine B photodegradation with a reaction time of 30 min and an apparent rate constant of 0.125 min−1, surpassing most other g-C3N4 composites. This enhanced activity was attributed to the adjusted band structure achieved through polar functional group modification. The modification of polar functional groups could alter the energy band structure of photocatalysts, narrow band gap, enhance visible-light absorption, and improve photogenerated carrier separation efficiency. This work highlights the significant potential of polar functional groups in tuning the structure of g-C3N4 to enhance efficient molecular oxygen activation. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1420-3049 27245330 |
| Relation: | https://www.mdpi.com/1420-3049/29/16/3836; https://doaj.org/toc/1420-3049 |
| DOI: | 10.3390/molecules29163836 |
| URL الوصول: | https://doaj.org/article/7af27245330e40589ff0423d3142c9d7 |
| رقم الانضمام: | edsdoj.7af27245330e40589ff0423d3142c9d7 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 14203049 27245330 |
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| DOI: | 10.3390/molecules29163836 |