多步沉淀法制备纳米无机复合抗菌粉体  

Multistep deposition production process of nano inorganic composite antibacterial powder

作　　者：仪建华[1] 黄岳元[1] 谢建榕[1] 王亚平[1] 宋安宁[1] 

机构地区：[1]西北大学化工学院

出　　处：《西北大学学报（自然科学版）》2007年第2期235-238,共4页Journal of Northwest University（Natural Science Edition）

基　　金：陕西省科技攻关基金资助项目(2000K-12-G);西安市科技攻关基金资助项目(GG9933)

摘　　要：目的研究一种以银、钛和锡为组分的新型纳米无机复合抗菌粉体的制备工艺。方法采用多步沉淀法,并通过单因素实验和正交实验确定最优工艺条件。结果最终产品的基本化学组成式为Ag0.03Sn0.16Ti0.35P0.11O0.34;产率达95.5%;粉体平均粒径50 nm;无外加光照、粉体浓度80mg/L时,30 min内其对大肠杆菌、金黄色葡萄球菌和白色念珠菌的抗菌率均达100%;粉体颜色浅,耐候性好。结论该方法制备的粉体具有较强的广谱抗菌效果,解决了银系抗菌剂易变色、对真菌作用效果不佳及钛系抗菌剂必须有光照才能起作用等问题。Aim To study the preparation technology of a new nano inorganic composite antibacterial powder with the constituents of silver, titanium, tin and phosphate. Methods Adopt muhistep deposition production process, and the optimal process conditions will be found from one-factor influence tests and multi-factor orthogonal test. Resuits The constitution was： Ag 0.03Sn 0.16Ti 0.35 P 0.11 O 0.34; the conversion was 95.5%. The average diameter of the fine particles was 50 nm. The antibacterial tests showed that this powder has 100% bactericidal action on E. coli, S. aures and C. albicans within 30 minutes with 80 mg/L （powder concentration） under the condition of dark environment. Conclusion The powder has strong and broad-spectrum antibacterial effect and has successfully resulved the problem that the Ag-series inorganic antibacterial agent has a bad antibacterial effect on fungi and Ti-series inorganic antibacterial agent makes less effect under the condition of dark environment. Besides, the problem of Ag-antibacterial agent tarnishing has been resolved.

关 键 词：无机抗菌剂 复合材料 纳米材料 多步沉淀法 

分 类 号：TQ153.1[化学工程—电化学工业]