摘要
以TiO2为前驱体,采用液相沉淀法成功制备了Ag+/TiO2/SiO2纳米复合材料。考察了正硅酸四乙酯(TEOS)加入量对复合材料粒径和白度的影响,并对复合材料的抗变色性和抗菌性能进行了研究。通过改变TEOS加入量,优化了SiO2外壳的厚度,使Ag+/TiO2/SiO2纳米复合材料具有较小的粒径,同时增加了复合材料的抗变色性能和抑菌性能。抑菌性能测试表明,Ag+/TiO2/SiO2纳米复合材料对大肠杆菌(E.coli)、金黄色葡萄球菌(S.aureus)和白色念珠菌(C.albicans)具有较强的抑菌作用,达到99%抗菌率的最小浓度分别是55mg/L、75mg/L和65mg/L。
With the titanium dioxide as precursor,the Ag+/TiO2/SiO2 nanocomposite materials were prepared by liquid phase precipitation method.The influence of tetraethyl orthosilicate(TEOS)on the particle size and whiteness of composites were investigated,and the anti-tarnish and antibacterial properties of composites were studied.The thickness of the SiO2 shell was optimized by changing the addition of TEOS,so that the Ag+/TiO2/SiO2 had smaller particle size,and increased the anti-tarnish and antibacterial properties of the composite material.the antibacterial performance test shown that Ag+/TiO2/SiO2 exhibited strong antimicrobial properties on E.coli,S.aureus and C.albicans,and the minimum concentration of 99%antibacterial was 55mg/L,75mg/L and 65mg/L,respectively.
作者
秦汤
孙宏浩
Qin Tang;Sun Honghao(Institute of Bioengineering and Food,Hubei University of Technology,Key Laboratory of Fermentation Engineering(Ministry of Education),Hubei Key Laboratory of Industrial Microbiology,Innovation Base of Cell Regulation and Molecular Medicine,Wuhan 430068)
出处
《化工新型材料》
CAS
CSCD
北大核心
2019年第9期122-126,共5页
New Chemical Materials
基金
国家自然科学基金(21401051)
湖北省自然科学基金(2014CFA080)
湖北省科技厅高等学校优秀中青年科技创新团队计划(T201705)
湖北省“楚天学者”计划(2013)
