氧化锰团簇粒子在有序多孔氧化锆孔道中的组装及其特殊性能研究  

Study on the Special Properties of Manganese Oxide Nanoclusters Confined in the Ordered Porous Zirconium Oxide

作　　者：陈航榕[1] 施剑林[1] 闫继娜[1] 陈红光[1] 阮美玲[1] 严东生[1] 

机构地区：[1]中国科学院上海硅酸盐研究所

出　　处：《化学学报》2002年第1期76-80,共5页Acta Chimica Sinica

基　　金：国家自然科学基金(No.59882007)资助项目.

摘　　要：利用醇溶液浸渍法及后续的热处理工艺成功实现了氧化锰团簇粒子在有序多孔氧化锆孔道中的组装.借助XRD,TEM,UV-vis,EPR以及Q2-TPD等分析手段进行样品结构表征及性能分析.研究表明,氧化锰团簇粒子能比较均匀地分散于规则的孔道中;团簇粒子的生长随着热处理温度的提高受到孔道大小的限制;孔道中的氧化锰团簇粒子能显示出与较大尺寸氧化锰粒子完全不同的强顺磁信号,并且还具有优异的表面氧吸附特性.Manganese oxide nanoclusters were synthesized within ordered porous ZrO2 by using wet impregnation technique. X-ray powder diffraction, HRTEM, XPS, UV-vis spectroscopy, Electron paramagnetic resonance (EPR) spectroscopy and O2-TPD measurement were adopted for the characterization of the synthesized materials. The results showed that the nanoclusters of manganese oxide could be successfully confined and randomly distributed into the pores of ZrO2 ?The size of the MnO2 nanoclusters was better confined by the dimension of the pore channels with increasing the heating temperature. EPR measurement revealed that decreasing of the particles' sizes led to a significant change in the magnetic property. The excellent oxygen adsorption properties of the clusters of manganese oxide confined into the pore channels were demonstrated by the O2-TPD analysis.

关 键 词：氧化锰团簇 组装 有序多孔氧化锆 磁性能 表面氧吸附性能 醇溶液浸渍法 

分 类 号：O614[理学—无机化学]