A hybrid of g-C3N4 and porphyrin-based covalent organic frameworks via liquid-assisted grinding for enhanced visible-light-driven photoactivity

• Published in: Dalton transactions : an international journal of inorganic chemistry Vol. 48; no. 40; pp. 14989 - 14995
• Main Authors: Hou, Yuxia, Cheng-Xing, Cui, Zhang, Enhui, Ji-Chao, Wang, Li, Ying, Zhang, Yuping, Zhang, Yuquan, Wang, Qing, Jiang, Jianzhuang
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 2019
• Subjects: Carbon nitride; Grinding; Heterojunctions; Heterostructures; Particulate composites; Photocatalysis; Photocatalysts; Photodegradation; Pollutants; Rhodamine; Two dimensional composites
• ISSN: 1477-9226; 1477-9234; 1477-9234
• DOI: 10.1039/c9dt03307f

Designing photocatalysts with heterostructures is an effective way to promote visible-light-driven photocatalytic degradation. Herein, a series of 2D/2D heterojunction photocatalysts, denoted as CuPor-Ph-COF/g-C3N4 composites, were prepared through in situ synthesis on the surface of g-C3N4 by a facile liquid-assisted grinding method. The photocatalytic performance of the as-prepared CuPor-Ph-COF/g-C3N4 composites was evaluated by the degradation of a model pollutant rhodamine B. The CuPor-Ph-COF/g-C3N4 composites displayed superior photocatalytic performance to pure g-C3N4 or pure CuPor-Ph-COF because of the faster separation of photogenerated charges. This represents the first composite fabricated between a 2D porphyrin-based covalent organic framework (COF) and g-C3N4, demonstrating not only the possibility but also more importantly the affordability of the application of costly porphyrin-based COFs in catalysis.