光催化
碳纤维
抗菌活性
杂原子
化学
镍
纳米材料
金黄色葡萄球菌
材料科学
核化学
催化作用
纳米技术
细菌
有机化学
复合数
生物
复合材料
遗传学
戒指(化学)
作者
Xiaoyan Zhang,Guihong Sun,Shanshan Jia,Hanlu Xie,Zewen Kang,Wenjie Chen,Ma-Lin Cui,Bingqing Wang,Bo Wang,Xiangrong Chen,Da‐Peng Yang
标识
DOI:10.1016/j.cej.2022.135624
摘要
Developing new alternative antibacterial nanomaterials is becoming an emergent need to resolve infections caused by antibiotic-resistant bacteria. In this work, we successfully developed a series of defective Ni(PO3)2 modified carbon spheres (D-NiPO-Cx) nanocomposites for light-triggered photocatalytic destruction of antibiotic-resistant pathogens, such as Escherichia coli and Staphylococcus aureus. The as-prepared D-NiPO-C0.4 (with quality of carbon spheres of 400 mg) at a concentration of 100 μg/mL exhibit antibacterial efficiencies of 98.3 % and 71.9% for S. aureus and E. coli, respectively, under the light irradiation of 70 W halide lamp for 60 min. The activity is comparable to the standard photocatalyst P25. By combining the density functional theory calculations with experimental results, the effectively charge transfer from Ni(PO3)2 to defective carbon was responsible for the high antibacterial performance. Thus, our work makes an important contribution to understand the origin of the high antibacterial activity of defective carbon-based catalysts, with heteroatom doping perhaps being of significant importance to enhance the photocatalytic antibacterial performance.
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