Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Fuzhou, Fujian, 350116, China; College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China.
Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Fuzhou, Fujian, 350116, China; College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China.
J Hazard Mater. 2018 Sep 15;358:62-68. doi: 10.1016/j.jhazmat.2018.06.053. Epub 2018 Jun 25.
The development of metal-free photocatalyst to make maximum use of the solar energy for photocatalytic disinfection is highly desired. Herein, boron-and phenyl-codoped graphitic carbon nitride was prepared by thermal polycondensation of cyanamide with 3-aminobenzeneboronic acid and applied as photocatalyst to inactivate Escherichia coli (E. coli). The photocatalysts exhibited the enhanced light responsive range over ultraviolet to near infrared light and 99.9% bacteria could be inactivated within 3 h with a low concentration of photocatalyst under the irradiation of simulated solar light. The disinfection mechanism was studied by scavenger experiments, indicating HO was the main reactive species for the inactivation of bacteria. Finally, the photocatalyst was deposited on the surface of solid material and also exhibited strong disinfection performance. Taking advantage of excellent disinfection activity and low cytotoxicity, the photocatalyst showed a promising application in solar-driven photocatalytic disinfection in public place.
人们非常希望开发无金属光催化剂，以便最大程度地利用太阳能进行光催化消毒。在此，通过氰胺与 3-氨基苯硼酸的热缩聚制备了硼和苯并掺杂石墨相氮化碳，并将其用作光催化剂来灭活大肠杆菌（E. coli）。该光催化剂在模拟太阳光照射下，光响应范围扩展至紫外光到近红外光，在低浓度光催化剂的条件下，3 小时内即可将 99.9%的细菌灭活。通过猝灭实验研究了消毒机制，表明 HO 是细菌失活的主要反应性物质。最后，将光催化剂沉积在固体材料的表面上，也表现出很强的消毒性能。该光催化剂具有优异的消毒活性和低细胞毒性，有望在公共场所的太阳能驱动光催化消毒中得到应用。
