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Precursor-reforming Protocol to Synthesis of Porous N-doped g-C3N4 for Highly Improved Photocatalytic Water Treatments
Materials Letters ( IF 3 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.matlet.2020.127329
Huilan Qi , Yanan Liu , Chengyun Li , Xuhui Zou , Yuandong Huang , Yangang Wang

Abstract Graphitic carbon nitride (g-C3N4), a fascinating metal-free polymeric-like material, has gained much interest for environmental remediation. In this work, highly crystalline N-doped g-C3N4 (CN-Im) was synthesized by a simple precursor-reforming and thermal condensation strategy using urea and imidazole (Im) as precursors. The Rhodamine B (RhB) degradation efficiency of optimized photocatalyst is up to 93.5%, almost two times greater than that of bulk g-C3N4 (47%). Such remarkably enhanced photocatalytic activity can be attributed to the synergistic effects of higher specific surface area (105.28 m2 g−1), narrowed band gap (2.72 eV to 2.26 eV), and significantly increased charge transport rate of N-doped g-C3N4.

中文翻译:

用于高度改进光催化水处理的多孔 N 掺杂 g-C3N4 合成的前体重整方案

摘要 石墨氮化碳 (g-C3N4) 是一种迷人的无金属类聚合物材料,在环境修复方面引起了广泛关注。在这项工作中,使用尿素和咪唑 (Im) 作为前体,通过简单的前体重整和热缩合策略合成了高度结晶的 N 掺杂 g-C3N4 (CN-Im)。优化后的光催化剂的罗丹明 B (RhB) 降解效率高达 93.5%,几乎是本体 g-C3N4 (47%) 的两倍。这种显着增强的光催化活性可归因于更高的比表面积(105.28 m2 g-1)、带隙变窄(2.72 eV 至 2.26 eV)以及显着提高 N 掺杂 g-C3N4 的电荷传输速率的协同效应。
更新日期:2020-04-01
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