期刊
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
卷 93, 期 2, 页码 291-301出版社
SPRINGER
DOI: 10.1007/s10971-019-05197-8
关键词
Carbon doping; PS fiber; TiO2; Ag nanoparticles; Water treatment; Antibacterial property
资金
- Natural Science Foundation of Jiangsu Province [BK20131226]
- National Natural Science Foundation of China [51273171, 51673090]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
Ag-Carbon-TiO2 composite tubes were prepared by using polystyrene/AgNO3 composite fibers as a sacrifice template and a co-pyrolysis process. The Ag-Carbon-TiO2 tubes were characterized by SEM, TEM, X-ray diffraction, Raman spectrum, XPS, and UV-vis spectrum. The results showed that the Ag-Carbon-TiO2 tubes possessed uniform tubular structure with amorphous carbon, graphitic carbon, and Ag nanoparticles (AgNPs) distributing uniformly in TiO2. The Ag-Carbon-TiO2 tubes were confirmed high UV-vis light utilization and photocatalytic degradation efficiency to Rhodamine B due to the carbon doping, the surface plasmon resonance of AgNPs and the tubular structure, and the degradation of Rhodamine B reached 90% in 6 h. Meanwhile, they showed an excellent antibacterial effect on staphylococcus aureus, and the fatality rate of Ag-Carbon-TiO2 tubes to staphylococcus aureus reached 99.9% in 24 h when its concentration was higher than 4 mg/ml. The co-pyrolysis process could repress the AgNPs to grow to be large particles, which could be a key for the excellent antibacterial property. The research showed a promising strategy for preparing Ag-Carbon-TiO2 composite tubes by co-pyrolysis of PS composite electrospinning fibers, indicating their potential application in wastewater treatment and antibacterial materials. [GRAPHICS] .
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