邻二氮杂菲银/蒙脱石复合物的XPS和TG研究  

XPS STUDY OF ANTIBACTERIAL COMPOUNDS OF MONTMORILLONITE SUPPORTED BY SILVER CHELATE OF 1,10-PHENANTHROLINE

作　　者：杨丹[1,2] 袁鹏[2] 朱建喜[2] 何宏平[2] 

机构地区：[1]仲恺农业工程学院,广东广州510225 [2]中国科学院广州地球化学研究所,广东广州510640

出　　处：《矿物岩石》2010年第2期7-13,共7页Mineralogy and Petrology

基　　金：中国科学院知识创新工程重要项目(KZCX2-YW-112);广东省自然科学基金项目(023203;04002140);仲恺农业工程学院校级科研基金(G2360311)

摘　　要：用微波辐射法制备了邻二氮杂菲银/蒙脱石抗菌复合物。以X射线光电子能谱(XPS)及热重分析(TG/DTG)对抗菌复合物及其热处理产物的表面特性及热稳定性进行探讨。结果表明:邻二氮杂菲银络离子插入到蒙脱石层间后,层间水含量减少。样品表面的银以邻二氮杂菲银络合物的状态存在,煅烧温度低于或等于200℃时,邻二氮杂菲银络合物没有发生分解;当煅烧温度到达300℃时,邻二氮杂菲银络合物开始分解产生新的物质Ag2O;当煅烧温度到达400℃时,样品表面开始有银粒子产生,随着温度的增加,银粒子的粒径不断增加。An antibacterial compound of silver chelate of 1,10-phenanthroline/montmorillonite was synthesized by using microwave radiation.The surface characteristics of the resulting sample and calcined products at different temperatures were investigated by means of X-ray photoelectron spectroscopy（XPS） in combination with thermogravimetric analysis（TG/DTG）.According to the XRD,the antibacterial compound was stable up to about 300 ℃ and XPS analysis indicated that change of silver state occurred in the order of silver chelate→silver（I） oxide→metallic silver,and high resolution XPS scans of the individual elements showed the changes of binding energies result from the change of the interlayer and surface environment as the treatment temperature increases.Silver particles formed in the samples after heating to 400 ℃ and grew with increasing temperature.

关 键 词：蒙脱石 邻二氮杂菲 银 XPS TG 

分 类 号：R979.7[医药卫生—药品]