均匀沉淀法制备ZAO纳米棒  

Preparation of ZAO nanorods by homogeneous precipitation method

作　　者：余姗姗[1] 沈晓冬[1] 崔升[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2009年第4期60-64,共5页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：江苏省博士后科研基金资助项目(0701012B)

摘　　要：采用均匀沉淀法,以尿素、Zn(NO3)2.6H2O和Al(NO3)3.9H2O为原料,在水-乙二醇溶液中制备了Al掺杂ZnO(ZAO)纳米棒.X射线衍射(XRD)分析表明:纳米棒为六方纤锌矿结构,掺杂的Al3+取代了Zn2+的位置,形成A1/ZnO固溶体,保持了ZnO的结构.前驱体的红外光谱(FT-IR)分析表明:乙二醇的加入改变了纳米材料的表面状态.扫描电镜(SEM)和高分辨透射电镜(TEM)结果显示:随着反应体系中乙二醇体积比和Al掺杂量的增加,ZAO纳米棒的长径比先增大后减小,在V(水)/V(乙二醇)=4、Al掺杂量为5%(摩尔分数)时,制得长径比最大为25、直径为10nm的纳米棒.Al-doped ZnO （ZAO） nanorods were synthesized by using homogeneous precipitation method from earbamide, Zn（ NO3 ） 2 ·6H2O and Al （ NO3 ） 3 ·9H2O. X-ray diffraction （XRD） showed that the ZAO nanorods were well assigned to hexagonal wurtzite structure, and that the Al^3＋ did enter the ZnO crystal lattice to substitute the position of Zn^2＋ , thus forming of Al/ZnO soild solution. The glycol changed the surface condition of the material from the infrared spectrum （FT-IR） of ZAO precursor. Resuits from scanning electron microscope （ SEM ） and transmission electron microscope （ TEM ） showed that with increasing Al content and the volume ratio of glycol, the aspect ratio of ZAO nanorods was in creased firstly, then decreased. When V（water） / V（glycol） = 4 and Al content was 5 % （ mole fraction）, the dimeter and the maximum aspect ratio of ZAO nanorods were 10 nm and 25.

关 键 词：Al掺杂ZnO 乙二醇 纳米棒 均匀沉淀 

分 类 号：TB34[一般工业技术—材料科学与工程]