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为了制备具有光催化活性和抗菌性能的功能性纺织品，采用等离子体技术对涤纶织物表面进行预处理，并将纳米TiO2光催化剂负载到涤纶织物表面，制备等离子体-TiO2-涤纶复合光催化材料。采用扫描电镜(SEM)、X射线能谱分析(EDS)、X射线衍射分析(XRD)、X射线光电子能谱分析(XPS)，分别对光催化材料的表面形貌、结晶结构、元素化学组成进行分析；并在模拟太阳光照射下，以亚甲基蓝为有机污染物模型，探讨了等离子体处理时间对涤纶织物表面光催化性能的影响；以大肠杆菌和金黄色葡萄球菌为测试菌种，探讨了等离子体处理时间对涤纶织物表面抗菌性能的影响。结果表明：经等离子体处理后负载TiO2的涤纶织物表面呈超亲水，负载TiO2后吸水时间仅190 ms。扫描电镜结果显示：随着等离子体处理时间的延长，涤纶织物表面纳米TiO2负载量逐渐增加。光催化降解实验结果表明：经等离子体处理2 min的涤纶织物在模拟太阳光下具有更高的降解率，用其对模型污染物亚甲基蓝处理90 min后，亚甲基蓝的降解率为94.5%。抗菌测试结果表明：经等离子体-TiO2整理后的织物对金黄色葡萄球菌的抑菌率可达91.2%。
Abstract：To prepare functional textiles with photocatalytic activity and antibacterial properties, plasma technology was used to pretreat polyester fabrics, and nano-TiO2 photocatalysts were loaded onto the surface of the fabrics to create plasma-TiO2-polyester composite photocatalytic materials. Scanning electron microscopy(SEM), X-ray energy dispersive spectroscopy(EDS), X-ray diffraction(XRD), and X-ray photoelectron spectroscopy(XPS) were employed to analyze the surface morphology, crystal structure, and elemental composition of the polyester fabrics. Under simulated sunlight irradiation, methylene blue was used as an organic pollutant model to investigate the effect of plasma treatment time on the photocatalytic performance of the polyester fabrics. The antibacterial properties were tested using Escherichia coli and Staphylococcus aureus as model organisms to evaluate the impact of plasma treatment time.The results show that the plasma-treated polyester fabric loaded with TiO2 exhibits superhydrophilicity, with a water absorption time of only 190 ms. SEM results indicate that the amount of nano-TiO2 on the polyester fabric surface increases with longer plasma treatment times. Photocatalytic degradation experiments demonstrate that polyester fabric treated with plasma for 2 minutes achieves a high degradation rate of 94.5% for methylene blue after 90 minutes under simulated sunlight. Antibacterial tests reveal that the plasma-treated polyester fabric loaded with TiO2 can achieve an antibacterial rate of 91.2% against Staphylococcus aureus.
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基本信息:
DOI：10.12194/j.ntu.20231120002
中图分类号:O643.36;O644.1;TS195.5
引用信息:
[1]赵紫瑶,栾睿,莫慧琳等.涤纶表面等离子体-纳米TiO_2整理及其光催化性能研究[J].南通大学学报(自然科学版),2024,23(02):58-66.DOI:10.12194/j.ntu.20231120002.
基金信息:
江苏省自然科学基金青年基金项目（BK20220613）; 南通市科技计划项目（JC12022080）