Visible-light responsive PDI/rGO composite film for the photothermal catalytic degradation of antibiotic wastewater and interfacial water evaporation

被引:184
作者
Dong, Shuying [1 ]
Zhao, Yinlan [1 ]
Yang, Jingyi [1 ]
Liu, Xiaodan [1 ]
Li, Wen [1 ]
Zhang, Luyuan [1 ]
Wu, Yuhan [1 ]
Sun, Jianhui [1 ]
Feng, Jinglan [1 ]
Zhu, Yongfa [2 ]
机构
[1] Henan Normal Univ, Sch Environm, Key Lab Yellow River & Huai River Water Environm, Minist Educ,Henan Key Lab Environm Pollut Control, Xinxiang 453007, Henan, Peoples R China
[2] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
基金
中国博士后科学基金;
关键词
PDI/rGO composite film; Photothermal conversion; pi-pi Interactions between nano-PDI and rGO; CIP; Actual water samples; ASSEMBLED PERYLENE DIIMIDE; REDUCED GRAPHENE OXIDE; Z-SCHEME PHOTOCATALYST; PI-PI INTERACTION; HIGHLY EFFICIENT; HYDROGEN EVOLUTION; 3D GRAPHENE; PERFORMANCE; AEROGEL; OXIDATION;
D O I
10.1016/j.apcatb.2021.120127
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
A visible-light responsive self-assembled perylenetetracarboxylic diimide (PDI)/reduced graphene oxide (rGO) composite film was obtained and showed excellent photocatalytic performance and efficient interfacial steam generation. The degree of pi-pi interactions between Perylenetetracarboxylic diimide supramolecular nanofibers (nano-PDI) and rGO regulated the energy band structure and redox potential of the composite film to produce h(+) and O-center dot(2)- active species. The photothermal conversion of the composite film under visible light irradiation was realized, which was mainly because the above-bandgap electrons and holes of the upper nano-PDI relaxed to the edge of the band and converted the excess energy into heat. The unique energy band structure of rGO also promotes the effective photothermal conversion of the composite film. The composite film degraded 94.31 % (10 mg/L) of ciprofloxacin hydrochloride (CIP) under 0.5 sun visible light irradiation within 120 min. The corresponding interfacial steam generation efficiency via photothermal conversion of the composite film was 10.92 %. Furthermore, the composite film retained its excellent photothermal performance, when used to remove CIP from real water samples, including Yellow River water, Weihe River water, and tap water.
引用
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页数:11
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