Explosive thermal exfoliation of intercalated graphitic carbon nitride for enhanced photocatalytic degradation properties |
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| Authors: | Kaixing Zhu Yang Lv Jing Liu Wenjun Wang Chunping Wang Peng Wang Alan Meng Zhenjiang Li Qingdang Li |
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| Affiliation: | 1. College of Mechanical Engineering, College of Mathematics and Physics, Sino-German Institute of Technology, Qingdao University of Science and Technology, Qingdao 266061, Shandong, PR China;2. Functional Crystal Center, Institute of Physics, Beijing 100190, PR China;3. College of Physics, Shandong University of Science of Technology, Qingdao 266590, Shandong, PR China |
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| Abstract: | ![]()
Dicyandiamide derived graphitic carbon nitride (g-C3N4) was chemically intercalated by concentrated H2SO4 firstly, followed by a rapid heating treatment. Molecules between the stacking layers of g-C3N4 produced an explosive effect upon rapid heating to thermally exfoliate g-C3N4 into porous structures. The appearance color of g-C3N4 changed from light yellow to grey after heating treatment indicating the enhanced light absorption properties, which were identified by the UV–vis absorption test. In addition, photoluminescence intensities of porous g-C3N4 were obviously suppressed compared to those of bulk g-C3N4 samples, indicating the prevention of the recombination process of photogenerated electron-hole pairs. As a result of these simultaneous modifications in texture, optical and electronic properties, the photodegradation kinetics of crystal violet on the catalyst surface can be improved by 4.75 times. |
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| Keywords: | Exfoliation Heating treatment Photocatalytic degradation |
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