β-PbO八面体微晶结构的电化学还原法制备  

Electrochemical reduction synthesis of microcrystalline β-PbO octahedrons

作　　者：朱嘉林[1] 任鹏飞[1] 邹小平[1] 陈静[1] 李业隆[2] 

机构地区：[1]北京信息科技大学传感技术研究中心,北京100101 [2]北京工商大学基础部,北京100037

出　　处：《电子元件与材料》2009年第9期42-45,共4页Electronic Components And Materials

基　　金：北京自然科学基金资助项目(No.2063027)

摘　　要：以硝酸铅溶液与盐酸为原料,利用电化学还原法合成了β-PbO八面体微晶。研究了电流密度和氯离子对产物形貌的影响,并对β-PbO八面体生长机理进行了探讨。结果表明:配备0.005mol/L的硝酸铅溶液,加盐酸调节其pH值为2～3,电流密度为(15～20)×10-3A/cm2,反应4min,通过电化学还原制备的产物为β-PbO八面体微晶,八面体边长为2～3μm,形状规则、表面光滑。氯离子的引入有利于PbO八面体的生成。Microcrystalline β-PbO octahedrons were synthesized by electrochemical reduction method with the lead nitrate solution and hydrochloric acid as raw materials. The morphologies and structures of products were characterized with powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy and energy dispersive analysis system of X-ray. The influences of the current density and chlorine ion on the morphologies of products were studied. The growth mechanism offl-PbO octahedrons was also discussed.The results show that the microcrystalline β-PbO octahedrons can be produced using electrochemical reduction with 0.005 mol/L of Pb（NO3）2 solution （the pH value of solution is 2-3 adjusted by adding hydrochloric acid）, （15-20）×10^-3A/cm^2 of current density and 4 min of reduction time. The length of side of β-PbO octahedrons is 2-3 p.m. The introduction of chlorine ion is propitious to the growth of PbO octahedrons.

关 键 词：电化学还原 β-PbO 八面体 微晶 电流密度 

分 类 号：TM277[一般工业技术—材料科学与工程]