Enhanced photocatalytic activity and optical response mechanism of porous graphitic carbon nitride (g-C3N4) nanosheets

被引：34
作者：
Zhang, Rui [1 ]
Zhang, Xianmin [2 ,3 ]
Liu, Saiwei [3 ]
Tong, Junwei [3 ]
Kong, Fan [3 ]
Sun, Naikun [4 ]
Han, Xiaoli [5 ]
Zhang, Yanlin [5 ]
机构：
[1] Chinese Acad Sci, Aerosp Informat Res Inst, Key Lab Sci & Technol High Power Microwave Source, Beijing 100190, Peoples R China
[2] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China
[3] Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China
[4] Shenyang Ligong Univ, Sch Sci, Shenyang 110159, Peoples R China
[5] TaianWeiye Electromech Technol Co Ltd, Tai An 271000, Shandong, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2021年 / 140卷
关键词：
Graphitic carbon nitride; Porous structure; Visible light absorption; Photocatalytic activity; HYDROGEN EVOLUTION; DOPED G-C3N4; WATER; PERFORMANCE; PHOTODEGRADATION; SEMICONDUCTORS; COMPOSITES;
D O I：
10.1016/j.materresbull.2021.111263
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Bulk graphitic carbon nitride (g-C3N4), fragmentized g-C3N4, and porous g-C3N4 nanosheets have been prepared by a facile solid-state reaction. All samples have been systematically characterized by X-ray diffraction technique, transmission electron microscope, flourier transform infrared spectroscopy, photoluminescence spectroscopy, UV-vis spectra and nitrogen adsorption-desorption measurements. The photocatalytic performance of all g-C3N4 samples was evaluated by the degradation of Rhodamine B (RhB) aqueous solution under a visible light irradiation. The porous g-C3N4 nanosheets exhibit the highest efficiency for degradation of RhB, which can be close to 100 % at 30 min. The degradation efficiency using bulk g-C3N4 and fragmentized g-C3N4 is only 85 % and 96 % at 60 min, respectively. The photocatalytic activity was investigated in detail to explore their optical response mechanism.
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页数：7
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