摘要
用沉淀法制备了纳米ZnO,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ZnO粉体,用AFM和XRD方法对纳米ZnO样品进行了表征,并着重研究了这些不同粒径分布的粉体在红外、紫外-可见光波段的吸收性能,且与普通ZnO进行了对比.结果表明:纳米ZnO在紫外有强的宽带吸收,对紫外光的吸收能力远远强于普通ZnO,且随着波长的减小,吸收峰不断增大,随着纳米ZnO粒径的减小,其吸收带边向短波方向移动产生蓝移现象;在可见光区,纳米ZnO比普通ZnO对可见光的吸收较弱,有很好的透过率;红外吸收能力随着纳米ZnO粒径的减少而增强,同时红外吸收出现红移和宽化现象.
Nano-ZnO with different sizes js prepared by deposition method. These nano-ZnO samples are characterized by AFM and XRD. The absorption behaviors in ultraviolet-visible light and infrared district of nano-ZnO are studied and compared with commercial ZnO. The result shows： in ultraviolet band, nano-ZnO has stronger absorbability than commercial ZnO, and the absorbing peak increases with the wavelength decreases, and the light absorption side shifts to higher frequency when the particle-size becomes smaller; in the visible light district, light absorbability of nand-ZnO is weaker than that of commercial ZnO ; infrared absorbability of nano-ZnO becomes better and the infrared absorption side shifts to lower frequency when the particle-size becomes smaller.
出处
《南昌大学学报（工科版）》
CAS
2006年第4期329-331,共3页
Journal of Nanchang University(Engineering & Technology)
关键词
纳米ZNO
紫外-可见光吸收
红外吸收
蓝移
红移
nano-ZnO
ultraviolet-visible light absorption
infrared absorption
blue shift
red shift
