锌-铈无机抗菌材料的制备及应用研究

Preparation and Application of Zinc-Cerium Inorganic Antibacterial Materials

通过溶胶-凝胶法制备获得一种具有抗菌性能的锌-铈抗菌白炭黑。通过单因素试验分别探究了锌离子浓度、稀土铈离子浓度和反应时间对锌-铈抗菌白炭黑抑菌率的影响。从而得到了较佳制备条件,锌离子浓度是0.8 mol·L^(-1)、稀土铈离子浓度是0.005 mol·L^(-1)、反应时间是1.5 h。实验以大肠杆菌为菌种,采用涂布平板法进行抗菌实验。采用SEM、EDS、BET、FTIR和XRD检测手段对产品进行表征。结果表明,锌-铈抗菌白炭黑结构蓬松,平均粒径较小,为无定形态。锌-铈抗菌白炭黑的比表面积为载体白炭黑的两倍多,更有利于作为添加剂加入到制品中。锌和铈离子的加入,载体白炭黑的原本结构并没有发生改变。此外,本研究还将锌-铈抗菌白炭黑添加到陶瓷中,获得了具有抗菌性能的抗菌陶瓷。

A novel zinc-cerium antibacterial white carbon black was successfully synthesized via a sol-gel method and used as an excellent antibacterial material. The single factor experiment investigates the influence of zinc ions concentration,cerium ions concentration and reaction time on the sterilization rate of zinc-cerium antibacterial white carbon black. The optimum preparation conditions： concentration of zinc ions was 0. 8 mol·L-1,concentration of cerium ions was 0. 005 mol·L-1 and reaction time was 1.5 h. Detecting antibacterial property of products by antibacterial experiment（ spread plate method,strains with e. coli bacteria）. The antibacterial material was characterised by SEM,EDS,BET,FTIR and XRD. The results show that the structure of the zinc-cerium antibacterial white carbon black are puffed and amorphous. The average particle size of antibacterial material is small. The specific surface area of zinc-cerium antibacterial white carbon black is larger twice than pure white carbon black,more advantageously added to the product as an additive. The loaded zinc ionsandcerium ions shows little influence on the structure of white carbon black. Further,the zinc-cerium antibacterial white carbon black is added to the ceramic as an antibacterial material,and antibacterial ceramics with antibacterial properties are prepared.