期刊
CHEMICAL ENGINEERING JOURNAL
卷 430, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.132669
关键词
Floating photocatalyst; g-C3N4; Reusability; Tetracycline elimination
资金
- National Natural Science Foundation of China [52100008, 51521006, 51579096]
- Funds for Innovative Province Construction of Hunan Province [2019RS3012]
- National Innovative Talent Promotion Program of China
- [2017RA2088]
The floating porous g-C3N4 (FPCN) synthesized via a one-pot method shows excellent photocatalytic performance, outperforming traditional powder catalysts in terms of efficiency in removing tetracycline. The 3D interconnected network and enhanced light absorption of FPCN contribute to its superior performance, offering a promising solution to the recycling issue of powder catalysts.
Powder catalysts are difficult to recycle, which may induce secondary pollution and may limit their practical application. Herein, we successfully synthesized floating porous g-C3N4 (FPCN) using a melamine sponge and urea via a facile one-pot method, which can solve the recycling problem of powder catalysts. The highest elimination efficiency of 5 mg/L tetracycline (TC) reached 70% by 2 g/L FPCN without any stirring under visible light after 4 h. However, the elimination efficiency of 5 mg/L TC by 2 g/L powder g-C3N4 was only 36.9% under the same conditions. The good photocatalytic performance of FPCN is attributed to its 3D interconnected network and enhanced light absorption. The effects of inorganic ions and organic matters on the photocatalytic performance of FPCN were studied. Finally, we proposed a possible mechanism and pathway for degradation of TC.
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