Red Phosphorus Nanodot-Decorated Polymeric Carbon Nitride Nanotubes for Visible-Light-Driven Photocatalytic Bacterial Inactivation

作者：Chen, Jingying; Zhu, Yukun^*; Yang, Xianfeng; Ye, Wanneng; Liu, Jiaxiu; Butenko, Denys S.; Lu, Ping; Meng, Pingping; Xu, Yan^*; Yang, Dongjiang; Zhang, Shuchao^*

来源：ACS Applied Nano Materials, 2022, 5(1): 862-870.

DOI：10.1021/acsanm.1c03567

• red phosphorus
• carbon nitride
• heterostructure
• bacterial inactivation
• photocatalysis

Pathogenic microorganisms related to infectious diseases severely threaten human health, and visible-light-driven (VLD) photocatalysis is a promising strategy for mitigating microbial-induced health crises. In this work, a superior and effective VLD photocatalyst comprising a red phosphorus nanodot-modified one-dimensional carbon nitride nanotube (RP-CN) heterostructure was synthesized with a simple chemical vapor deposition method and used for bacterial inactivation. The optimized RP (40)-CN rapidly and completely destroyed Escherichia coli and Staphylococcus aureus (10(7) CFU mL(-1)) within 25 and 30 min under irradiation with a white LED, respectively. The efficient photocatalytic activity was attributed to the fact that the matching work function in the CN-RP heterojunction promotes the charge migration/separation that occurs at the CN and RP interface and the broad absorption spectra by RP loading. Additional unpaired photoelectrons reacted with water to generate O-center dot(2)- radicals and H2O2 for efficient bacterial cell inactivation. The present study highlights the design of nanostructured photocatalysts with wide spectral responses for efficient energy conversion and wide antibacterial scope.

• 单位
  y; 青岛大学