光催化
石墨氮化碳
材料科学
催化作用
氮化碳
可见光谱
纳米技术
化学工程
分解
纳米颗粒
水处理
饮用水净化
纳米复合材料
三聚氰胺
碳纤维
吸附
分解水
氮化物
工艺工程
X射线光电子能谱
光化学
环境科学
化学
环境工程
光电子学
复合数
复合材料
有机化学
工程类
图层(电子)
作者
Dongyang He,Hao Yang,Dexin Jin,Jiao Qu,Xing Yuan,Ya-nan Zhang,Mingxin Huo,Willie J.G.M. Peijnenburg
标识
DOI:10.1016/j.apcatb.2020.119864
摘要
Abstract Developing simple yet highly efficient photocatalytic systems is of fundamental importance to implement photocatalysis into practical water treatment applications. Unfortunately, despite intense efforts over the past few decades, the activities of the currently-reported photocatalysts are still far from meeting the requirements of industrial applications. Here, we show that by facilely tuning the reaction parameter for synthesizing graphitic carbon nitride (g-C3N4), g-C3N4 can in itself achieve an extremely high photocatalytic activity towards the decomposition of several recalcitrant organics. The synthesized g-C3N4 significantly outperforms the extensively studied P25 TiO2 under both visible-light and full arc illumination, and its catalytic activity is even comparable or better than that of the representative g-C3N4-based nanocomposites previously reported, with a much lower catalyst consumption. Furthermore, only 5 min of ultrasonic pretreatment is required to achieve the excellent activity for the g-C3N4 photocatalyst, indicating its immense potential in real-world photocatalytic water treatment operations.
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