天然矿物电气石对水分子团簇的影响  

The influence of natural mineral tourmaline on water cluster

作　　者：展杰[1] 王泽岩[1] 王朋[1] 葛炳辉[2] 程合锋[1] 黄柏标[1] 蒋民华[1] 

机构地区：[1]山东大学晶体材料国家重点实验室,山东济南250100 [2]清华大学材料科学与工程系,北京100084

出　　处：《功能材料》2010年第1期159-161,共3页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50672052);国家重点基础研究发展计划(973计划)资助项目(2007CB613302);国家科技支撑计划重点资助项目(2007BA000875);山东省自然科学基金资助项目(Y2006F19)

摘　　要：以新疆产天然电气石为原料制备了电气石微粉,利用X射线衍射仪、扫描电镜、高分辨电镜、17O核磁共振研究了电气石微粉的物相结构、微结构特点和电气石的热释电性对水分子团簇结构影响,并对其作用的机理进行了探讨。结果表明,所制备的电气石微粉的结晶性完好,具有单向极性结构的热释电性材料电气石的微晶在温度涨落的环境中可视为电偶极子;电气石粉对水的17O核磁共振谱的半峰宽具有明显的影响,从HW=145.41Hz降到HW=81.11Hz,表明电气石微粉对水分子团簇结构的改善有明显的作用。Micro-nano tourmaline powder was prepared by using natural Xinjiang tourmaline single crystals as materials.The powder was characterized by XRD,SEM,HRTEM.The influence of tourmaline on water cluster was studied by 17O NMR spectra.The results show that the pyroelectric tourmaline micro-nano particles with perfect crystal structure could be regarded as electric dipoles.The addition of a little amount of tourmaline powder in water leads to lower in half-width of 17O NMR spectra from HW=145.41Hz to HW=81.11Hz.The results suggest that tourmaline powder is a potential material in the improvement of water cluster.

关 键 词：电气石 热释电性 水团簇 

分 类 号：O738[理学—晶体学]