纳米载银凹凸棒的一种新型制备方法及其载银机理研究  

A New Method of Producing Ag-carrying Nanopalygorskite Composites and the Study of Carrying Silver Mechanism

作　　者：王建荣[1] 刘斌[1] 何康[1] 

机构地区：[1]兰州大学口腔医学院,兰州730000

出　　处：《硅酸盐通报》2008年第5期1036-1039,共4页Bulletin of the Chinese Ceramic Society

基　　金：甘肃省自然科学基金资助项目(3ZS041-A25-054)

摘　　要：本文以纯化的凹凸棒为原料,在室温下采用原位还原的方法制备了纳米载银凹凸棒。利用X-射线衍射(XRD)技术分析了纳米载银凹凸棒晶体结构,发现纳米载银凹凸棒中凹凸棒晶面间距没有变化,同时有银的衍射峰出现。透射电子显微镜(TEM)对样品形貌的观察表明,粒径为8～11nm纳米银颗粒较为均匀地负载到凹凸棒表面。样品的元素分析说明纳米载银凹凸棒中银含量为9.13%。红外吸收光谱(FT-IR)对纳米载银凹凸棒的表征结果证明纳米载银凹凸棒与纯凹凸棒光谱基本相同。研究表明在凹凸棒上成功载银,并提出了其载银机理。In this paper, Ag-carrying nanopalygorskite composites were prepared at the room temperature using the pure attapulgite as the raw material was unchanged even though material. It was found that the crystal structure of the composite the diffraction peak of silver appeared in XRD pattern. TEM investigation of the Ag-carrying nanopalygorskite composites indicated that sliver particle with the diameter of about 8 - 11 nm coated the nanopalygorskite surface uniformly. The element analysis illustrated that the content of Ag was 9. 13% in the obtained nanopalygorskite composites. However, there was no obvious difference between the spectrum of Ag-carrying nanopalygorskite composites and pure attapulgite in the FT-IR spectra. All above mentioned analysis demonstrated that Ag was coated the nanopalygorskite surface easily by this method and the obtained successfully. Ag-carrying nanopalygorskite composites were

关 键 词：凹凸棒 银 纳米载银凹凸棒 

分 类 号：TD985[矿业工程—选矿]