The enrichment of photo-catalysis via self-assembly perylenetetracarboxylic acid diimide polymer nanostructures incorporating TiO2 nano-particles

被引：49
作者：
Liu, Li [1 ]
Yue, Mengting [1 ]
Lu, Jinrong [1 ]
Hu, Jinshan [1 ]
Liang, Yinghua [1 ]
Cui, Wenquan [1 ]
机构：
[1] North China Univ Sci & Technol, Coll Chem Engn, Hebei Key Lab Environm Photocatalyt & Electrocata, Tangshan 063009, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2018年 / 456卷
基金：
中国国家自然科学基金;
关键词：
Self-assembly; Perylenetetracarboxylic acid diimide; Nanosheet; Hybrid; Photocatalytic performance; PERYLENE DIIMIDE; GRAPHENE OXIDE; PHOTOCATALYTIC DEGRADATION; TIO2-GRAPHENE HYDROGEL; H-2; EVOLUTION; BISPHENOL-A; PI-STACKING; REMOVAL; WATER; NANOPARTICLES;
D O I：
10.1016/j.apsusc.2018.06.183
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This paper reports that hybrid titanium dioxide (TiO2) packaged self-assembly perylenetetracarboxylic acid diimide (PTCDI) by self-assembly. These were synthesized through simple mechanical milling that has great photocatalytic performance under visible light. The PTCDI@TiO2 composite had high activity for the degradation of phenol and 2,4-dichlorophenol, which were 2.3 and 3.2 times of the monomer PTCDI, respectively. After three cycles, the activity of the composite catalyst remained at 70%. Further analysis showed that the photocatalytic activity and stability are mainly due to the enhancement of the charge mobility by the pi-pi conjugated structure in PTCDI. Moreover, the good energy level matching between PTCDI and TiO2 helps to separate the electron-hole, thus improving the photocatalytic performance of the composite. The origin of photocatalytic activity was greatly improved due to holes and O-center dot(2)-, which was mainly attributed to the strong interaction between PTCDI and TiO2.
引用
收藏
页码：645 / 656
页数：12
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