光催化
海泡石
材料科学
三嗪
共价键
光化学
可见光谱
化学工程
半导体
氢键
复合数
化学
光电子学
分子
高分子化学
复合材料
有机化学
催化作用
原材料
工程类
作者
Bing Yi,Jin Zeng,Weijie Zhang,Haishuai Cui,Huajie Liu,Chak Tong Au,Quan Wan,Hai Yang
标识
DOI:10.1016/j.clay.2023.106921
摘要
Featuring strong visible-light absorption, tunable band gaps, structural diversity, and fully conjugated nitrogen-rich structures, covalent triazine frameworks (CTFs) are emerging as a class of promising semiconductor photocatalysts. However, limited by their poor hydrophilicity and fast charge carrier recombination, their photocatalytic efficiency in water is far lower than expected. Herein, a hybrid composite of sepiolite (SEP) and CTF with a tunable density was synthesized via an in situ CF3SO3H-promoted strategy. The resultant [email protected] 2:1 composite exhibited excellent photocatalytic efficiency in the degradation of antibiotics under visible light, which can be attributed to its improved charge transfer and enhanced hydrophilicity. The interaction between sepiolite and Th-CTF via hydrogen bonding results in the transformation of photogenerated electron from Th-CTF to antibiotics. The combination of sepiolite with CTFs can improve photocatalytic performance, which is instructive to broaden the application of CTFs as semiconductors for efficient solar energy conversion in a water medium.
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