连续微波法制备纳米氧化锌及其表征  

CONTINUOUS MICROWAVE SYNTHESIS AND CHARACTERIZATION OF ZnO NANOPARTICLES

作　　者：洪若瑜[1,2] 李建华[1] 倪静[1] 

机构地区：[1]苏州大学化学化工学院江苏省有机合成重点实验室,苏州215006 [2]中国科学院过程工程研究所多相反应重点实验室

出　　处：《精细石油化工》2005年第6期15-19,共5页Speciality Petrochemicals

基　　金：国家自然科学基金(20476065);中科院多相反应重点实验室基金(2003-2);中科院煤转化国家重点实验室基金(2004-309);江苏省有机重点实验室基金;国家教委留学回国基金;苏州大学211工程资助项目。

摘　　要：采用连续微波辐射,以硫酸锌和尿素为原料,制备了粒径为8～30 nm 的纳米 ZnO。采用 SEM、TEM、XRD、UV-vis 等分析测试手段,对不同条件下制得的纳米 ZnO 进行了表征,发现了梭状、条状、圆片状、球形的纳米 ZnO 晶型,得出最佳实验条件:n(Zn^(2+))∶n(尿素)=1∶3,连续反应1.5h,在450℃下于马弗炉中锻烧3h。测定了其悬浮液的 UV-vis 吸收;并使用微波辐射制备的纳米 ZnO 粉末和普通粉体,在紫外光下催化降解甲基橙溶液。Using ZnSO4 · 7H2O and urea as starting materials, ZnO nanoparticles of the diameter of 8 to 30 nm were prepared under continuous microwave irradiation. The ZnO nano-crystals synthesized under different conditions were characterized by SEM, TEM, XRD and UV-vis. Several special crystal shapes, such as shuttle, strip, wafer and sphere, were found. Optimal conditions for preparing ZnO nanoparticles under microwave irradiation were obtained： 1 ： 3（mol） of ZnSO4 ： （NH2）2CO, reacting 1.5 h, and being calcined for 3 h. The photocatalytic degradation of methyl orange under UV- radiation and the absorption of UV-vis by the synthesized ZnO were investigated.

关 键 词：微波 氧化锌 纳米颗粒 

分 类 号：O614.24[理学—无机化学] TQ132.4[理学—化学]