光热治疗
灭菌(经济)
光催化
对偶(语法数字)
机制(生物学)
材料科学
纳米技术
化学
催化作用
生物化学
业务
物理
文学类
艺术
量子力学
外汇市场
汇率
财务
作者
John H. Zhang,Yueqi Pan,Yihan Chen,Zhiwei Yang,Dongcai He,Nan Feng,Weijie Wang,Yunfeng Li,Dan‐Na Chen,Xianchun Chen,Jing Zhang
标识
DOI:10.1002/cctc.202301434
摘要
Abstract In this research, a high‐efficiency nano‐fungicide with synergistic effect was obtained by combining polycrystalline MoS 2 with layered nano‐BP to form heterojunction, which had a new photothermal‐photocatalytic antibacterial mechanism to Gram‐positive bacteria, Gram‐negative and drug‐resistance bacteria under NIR. BP/MoS 2 whose lethality of bacteria could reach nearly 100 % at 400 μg/L, exhibited the highest photothermal lysis efficiency against E. coli, B. pumilus and A. baumannii. It was found that the heterojunction could be heated up to 51.8 °C within 5 minutes by photothermal conversion, and it also had an excellent performance of photothermal cycle. High temperature and stability of the material endowed it with an outstanding and long‐lasting bactericidal effect. In addition, a series of in vitro free radical experiments was designed, the existence of ⋅O 2 − and 1 O 2 in BP/MoS 2 ‐NIR system was verified. And the Way of ROS production and the mechanism of action were discussed by EPR test. Subsequently, two mechanisms of synergistic antibacterial action were summarized, that is, abundant ROS and high temperature could destroy cell wall damage and lysis of bacteria effectively. This study provides a theoretical basis for the synergistic antibacterial action of NIR photothermal and photocatalysis of BP system.
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