Enhanced Antibacterial Photocatalytic Activity of Porous Few-Layer C3N4
2020
Nowadays, antibacterial photocatalytic activity of semiconductors has attracted great attention due to its excellent stability, good biocompatibility and no disinfection byproducts. Herein, a porous few-layer C(3)N(4) was successfully fabricated via a simple and low-cost bottom-up method. The asprepared porous few-layer C(3)N(4) exhibits large specific surface areas, which is about 4.8 times than bulk C(3)N(4). Under the light (<430 nm) irradiation, reactive oxygen species (ROS) (singlet oxygen ((1)O(2)), hydroxyl radicals (.OH), and superoxide (O(.-)(2))) can be generated. The porous few-layer C(3)N(4) was used as an antibacterial agent to kill gram-positive bacterium S. Aureus with an anibacterial efficiency up to 99.7%. The log removal rate of the porous few-layer C(3)N(4) is more than 50 times than the bulk C(3)N(4). The material shows a potential application in water purification and antibacterial photocatalytic therapy.
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