光催化
光降解
可见光谱
钾
光化学
材料科学
碱金属
激进的
化学
无机化学
化学工程
核化学
催化作用
有机化学
光电子学
工程类
作者
Weiwei Wang,Zhi Chen,Xiuru Yang,Pierre Audebert,Sanjubala Sahoo,Jinchao Chen,Yurong Liu,S. P. Alpay,Lei Xie,Guoying Wei
标识
DOI:10.1016/j.apcata.2022.118669
摘要
As a salt of cyameluric acid and a derivative of tri-s-triazine, rod-shaped potassium cyamelurate K3[C6N7O3] has been synthesized and employed as a homogeneous photocatalyst for photodegradation of aquatic tetracycline hydrochloride (TC-HCl) under visible-light irradiation for the first time. The water-soluble K3[C6N7O3] owns excellent visible-light-driven photocatalytic activity, which is approximately 9 and 10 times higher than those on melon and g-C3N4 in water, respectively. The photocatalytic process is investigated experimentally and theoretically, and the active centers of K3[C6N7O3] are identified by first principles calculations. The active radicals for the photodegradation are identified and a reaction mechanism is proposed. Moreover, K3[C6N7O3] can also work as an efficiently heterogeneous photocatalyst for the removal of TC-HCl in ethanol. This work provides a novel photocatalyst bridging homogenous and heterogeneous photocatalysis for environmental protection and opens a new application space for alkali cyanurates.
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