1. Construction of 3D porous g-C3N4/AgBr/rGO composite for excellent visible light photocatalytic activity.
- Author
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Zhou, Yaju, Li, Jinze, Liu, Chongyang, Huo, Pengwei, and Wang, Huiqin
- Subjects
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GRAPHENE oxide , *POROUS materials , *VISIBLE spectra , *PHOTOCATALYSTS , *CATALYTIC activity - Abstract
A multiple transmission channels, heterojunction and 3D PCN/AgBr/rGO photocatalyst was successfully synthetized by introducing the reduced graphene oxide (rGO) covering AgBr onto the surface of 3D porous g-C 3 N 4 (PCN). In PCN/AgBr/rGO, PCN as a semiconductor photocatalyst provides the 3D framework, the heterojunction was formed with AgBr particles and PCN, rGO promotes the electron transfer simultaneously and introduces a multiple transmission channels system to increase the active species. Thanks to the heterojunction formed between PCN and AgBr, resulting rapid separation of photo-generated e − /h + at interface. The 3D PCN/AgBr/rGO nanocomposite exhibits excellent photocatalytic efficiencies for tetracycline (TC) up to 78.4% within 90 min and 2,4-dichlorophenol (2,4-DCP) up to 68.2% within 6 h. The photocatalytic rate of PCN/AgBr/rGO was much higher than 3D PCN (21%), AgBr particles (31%) and most of g-C 3 N 4 -based photocatalysts in TC degradation. Moreover, the PCN/AgBr/rGO shows high photocatalytic stability due to the significantly photocatalytic stability after four photo-degradation cycles. This study highlights the potential application of PCN/AgBr/rGO highly efficient waste water purification. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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