摘要
研究了以麦饭石为载体,AgNO3溶液为反应溶液制备载银麦饭石的方法。考察了麦饭石不同处理方法、AgNO3溶液的浓度、pH值及反应时间对麦饭石载银量的影响。麦饭石的粒度小于74μm,经碱洗处理后在100℃烘干,AgNO3浓度为0.1mol/L、溶液pH值控制在6～7,室温条件下浸泡2h,麦饭石的最大载银量为1.25%,麦饭石的载银机理是银离子与麦饭石结构的阳离子发生交换反应。抗菌实验表明载银麦饭石对大肠杆菌的抗菌性能显著优于未载银的麦饭石,随着载银麦饭石处理温度的升高,抗菌性能下降。
This paper discusses the preparation and antibacterial performance of a silver-loaded maifanite. The silver-loaded maifanite was prepared by mixing pretreated maifanite with AgNO3 solution. The influence of preparation process on silver-loading ability of maifanite was studied and the optimum preparation process was determined. Maifanite with the particle size lower than 74 μm was soaked in 0.5 mol·L^-1 NaOH solution at room temperature, washed with water, dried at 100 ℃, reacted with 0.1 mol.L1 AgNO3 at pH 6-7 for 2 h, and the silver-loading content could reach to 1.25wt%. The results show that the silver-loading reaction is an ion exchanging mechanism between Ag^＋ and ions in maifanite. The antibacterial experiments indicate that the antibacterial ability to bacilluscoli of silver-loaded maifanite is much better than silver-unloaded maifanite and as the heating temperature of silver-loaded maifanite increased, its antibacterial ability dropped obviously.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2010年第A01期353-356,共4页
Rare Metal Materials and Engineering
关键词
载银麦饭石
制备工艺
抗菌性能
silver-loaded maifanite
preparation
antibacterial performance
