过硫酸盐
光降解
催化作用
激进的
光化学
光催化
化学
氧化还原
光激发
降级(电信)
化学工程
无机化学
有机化学
激发态
工程类
物理
核物理学
电信
计算机科学
作者
Wujian Zhang,Zhiling Huang,Hui Shen,Zhenhai Gu,Shengjie Xia,Panpan Zhang,Wenfeng Han,Ying Liu,Haodong Tang
标识
DOI:10.1016/j.colsurfa.2022.130223
摘要
The spatial loading of redox cocatalysts on different faces of semiconductor single crystals is an effective approach to construct efficient photocatalysts. This work selectively deposits Pt nanoparticles on the electron-rich (001) face of LaOCl catalyst (Pt/LaOCl-P). The Pt/LaOCl-P catalyst with selective deposition on (001) facet exhibited higher photocatalytic activity for NOR degradation than the catalyst with random deposition on the entire surface (Pt/LaOCl-R). It indicates that the separation of facet charges upon photoexcitation may be a unique pathway for efficient photocatalysts. After the addition of persulfate, the generated sulfate radicals have a synergistic effect with the original hydroxyl radicals and superoxide radicals, which further improves the photodegradation performance. In addition, the effects of catalyst dosage and pH on photodegradation were discussed and the recycling performance of the materials was tested. The possible degradation pathways and mechanism of NOR were degraded by DFT calculation and LC-MS analysis.
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