表面活性剂辅助固相法合成碘化银纳米线束与光谱表征  

Surfactant-Assisted Solid-Phase Synthesis and Spectral Characterization of Silver Iodide Nanowire Bundles

作　　者：刘颖[1] 冯金朝[1] 李金淑[1] 

机构地区：[1]中央民族大学生命与环境科学学院,北京100081

出　　处：《光谱学与光谱分析》2012年第4期1057-1060,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(21177163);国家民委科研项目(09ZY011);高等学校学科创新引智计划(B08044);中央民族大学"985工程"项目(MUC 98504-14;MUC 98507-08);中央民族大学"211工程"项目(MUC 02121103);中央高校基本科研业务费专项资金项目(0910KYZY45)资助

摘　　要：卤化银具有光致变色特性,广泛应用于光致变色玻璃,照相感光乳剂等。作为一种光信息载体,具有记录和保存光信息的功能,它还是一类重要的半导体光催化剂,有着广泛的应用。以AgNO3与KI为原料,在非离子表面活性剂聚乙二醇(PEG-400)存在条件下,进行室温固相反应,合成了碘化银纳米线束。采用XRD,TEM和SEM等测试手段对产物结构和形貌进行表征,结果表明,产物为一维碘化银纳米线束,其直径在80～100nm之间,长度约为20μm,长径比>200。表面活性剂PEG-400在碘化银纳米线束的形成过程中起到了软模板剂的作用,诱导产物纳米晶沿着某一特定方向定向有序生长从而生成纳米线束。该方法消除了水对反应过程的影响,操作简单,成本较低,对碘化银纳米线束的制备技术研究具有重要意义。In the present paper, AgNO3 and KI were used as raw materials synthesize silver iodide nanowire bundles in the condi- tion of nonionic surfactant polyethylene glycol （PEG-400） at room temperature. XRD, TEM and SEM techniques were used to characterize the silver iodide structure and morphology. The results indicated that the product was one-dimensional silver iodide nanowire bundles with diameters of 80-100 nm and lengths of 20um, and the length-diameter ratio was greater than 200. In the forming process of silver iodide nanowire bundles, PEG-400 surfactant was used as soft template agent, which induced the product nanocrystalline along a particular direction and directional orderly growth so as to generate nanowire bundles. This method with a simple operation and low cost eliminated the influence of water on the reaction process.

关 键 词：固相法合成 碘化银 表面活性剂 纳米线束 

分 类 号：O614[理学—无机化学]