摘要
为了研究改性TiO_(2)在聚丙烯(PP)材料表面的光催化抗菌性能,本文通过原位沉积法制备出焦硅酸银-二氧化钛(Ag_(6)Si_(2)O_(7)-TiO_(2))光催化剂,采用硅烷偶联剂KH-560对PP非织造材料进行预处理,再使用浸渍法将光催化剂负载到PP非织造材料的表面。通过SEM、XRD、XPS、UV-vis和光致发光光谱(PL)对材料的晶相结构、表面形态及化学组成等进行表征。结果表明,成功制备出Ag_(6)Si_(2)O_(7)-TiO_(2)/PP复合光催化材料,其中Ag_(6)Si_(2)O_(7)的质量分数为1wt%,负载PP非织造材料浓度为2 g/L。为研究Ag_(6)Si_(2)O_(7)-TiO_(2)/PP光催化降解染料性能,以甲基橙溶液作为降解物,以300 W氙灯作为光源对Ag_(6)Si_(2)O_(7)-TiO_(2)/PP处理120 min,结果其降解率达到95.6%。为研究Ag_(6)Si_(2)O_(7)-TiO_(2)/PP抗菌性能,对比了Ag_(6)Si_(2)O_(7)-TiO_(2)/PP在可见光和无光条件下对金黄色葡萄球菌和大肠杆菌的抑菌效果,结果显示其在可见光下对两种细菌抑菌率均达到99.99%以上。
To study the photocatalytic and antibacterial properties of modified TiO_(2) on the surface of polypropylene(PP),silver pyrosilicate-titanium dioxide(Ag_(6)Si_(2)O_(7)-TiO_(2))photocatalyst material was prepared by in-situ deposition,and it was loaded on the surface of PP nonwovens material which pretreat by silane coupling agent through impregnation method.The crystal structure,surface morphology and chemical composition were characterized by SEM,XRD,XPS,UV-vis and photoluminescence spectroscopy(PL).The results show that Ag_(6)Si_(2)O_(7)-TiO_(2)/PP composite photocatalytic material is successfully prepared,in which the mass fraction of Ag_(6)Si_(2)O_(7) is 1wt%and the concentration of loaded PP nonwovens is 2 g/L.In order to characterize the photocatalytic degradation of dyes by Ag_(6)Si_(2)O_(7)-TiO_(2)/PP,the methyl orange solution are used as degradation substance,Ag_(6)Si_(2)O_(7)-TiO_(2)/PP is treated under xenon lamp light with 300 W for 120 min,and the degradation rate reach 95.6%.In order to characterize the antibacterial properties of Ag_(6)Si_(2)O_(7)-TiO_(2)/PP,the antibacterial effects of Ag_(6)Si_(2)O_(7)-TiO_(2)/PP on Staphylococcus aureus and Escherichia coli under visible light and no light are contrasted.The results show that the bacteriostatic rates of Ag_(6)Si_(2)O_(7)-TiO_(2)/PP against both bacteria under visible light are more than 99.99%.
作者
樊婷玥
任煜
赵紫瑶
莫慧琳
李美贤
FAN Tingyue;REN Yu;ZHAO Ziyao;MO Huilin;LI Meixian(School of Textile and Clothing,Nantong University,Nantong 226019,China)
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2022年第8期3915-3921,共7页
Acta Materiae Compositae Sinica
基金
南通市科技项目(JC2021039)。
