纳米氧化锌的制备及其中红外、紫外可见光吸收特性  

The preparation of nano-ZnO and its middle infrared-ultraviolet-visible light absorption properties

作　　者：陈传志[1] 周祚万[1] 

机构地区：[1]西南交通大学材料科学与工程学院,四川成都610031

出　　处：《功能材料》2004年第1期97-98,104,共3页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50272056);四川省重点科技攻关资助项目(川科计[2001]20号;2002]2号)

摘　　要：　用均匀沉淀法制备了纳米氧化锌,通过反应条件和工艺参数的控制,得到了几种不同粒径分布范围的纳米级氧化锌粉体,并着重研究了这些不同粒径分布的粉体在中红外、紫外 可见光波段的吸收性能,并与普通氧化锌粉进行了对比,结果表明:纳米氧化锌在中红外频段与普通氧化锌的吸收能力相当;在可见光区,纳米氧化锌具有普通氧化锌不具备的高度透光性;而在紫外光区,纳米氧化锌具有很宽的吸收频段和优异的吸收性能,且随粒径的不同而出现变化,粒径分布在20～50nm之间,平均粒径为31nm时具有最佳紫外遮蔽性能;同时随粒径的减小,吸收峰发生蓝移。Nano-ZnO with different diameter was prepared by controlling the conditions of the reactions. The middle infrared, ultraviolet-visible light absorption behaviors of nano-ZnO were studied and compared with commercial ZnO. The results indicated that nano-ZnO and commercial ZnO had obvious absorption in middle infrared band, and the nano-ZnO had high transparence property in the band of visible light, and nano-ZnO had wide absorbing frequency as well as good absorbing effect in ultraviolet band. Further study showed that the ultraviolet light absorption behaviour of nano-ZnO varied with the diameter. The ultraviolet light shielded property was found when the particle sizes were 20～50nm. Blue shift of absorbing peak was observed as the diameter of nano-ZnO decreased.

关 键 词：均匀沉淀法 纳米氧化锌 中红外吸收 紫外-可见光吸收 纳米材料 

分 类 号：TB383[一般工业技术—材料科学与工程]