无模板合成三维花状氧化锌微晶及其形成机理  

Template-free synthesis of 3-D flower-like ZnO microcrystals and its formation mechanism

作　　者：李平[1] 许方香[2] 郭海容[2] 魏雨[2] 王心葵[1] 

机构地区：[1]中国科学院山西煤炭化学研究所,山西太原030001 [2]河北师范大学化学与材料科学学院,河北石家庄050016

出　　处：《现代化工》2007年第2期31-33,35,共4页Modern Chemical Industry

基　　金：河北省自然科学基金(501115)资助

摘　　要：以硝酸锌[Zn(NO3)2]和氢氧化钠(NaOH)为原料,不添加任何模板剂,采用简单的低温陈化法一步合成出了各种形貌3D花状ZnO微晶。所制备的3D花状ZnO粉体均为六方晶系纤锌矿ZnO,由多个沿c轴方向生长的单晶体(花瓣)组成。对3DZnO晶体的形成机理进行了详细探讨,并分别讨论了反应温度、反应物浓度及Zn(NO3)2与NaOH的摩尔比对生成产物的影响。Three-dimensional （3D） flowerlike ZnO microcrystals, with a diversity of well-defined morphology, were successfully prepared from Zn（NO3）2 and NaOH via a simple one-step solution route without any template. All the samples of product are hexagonal phase wurtzite, which are made of many single crystals growing along c-axis. The formation mechanism for solution synthesis of 3D ZnO mierocrystals was investigated in detail. The influences of temperature, reactant concentration and molar ratio of Zn（NO3）2 to NaOH on particle size and shape were also studied.

关 键 词：ZNO 3D花状 液相合成 形成机理 

分 类 号：O614.241[理学—无机化学] TB383[理学—化学]