摘要
由湿化学方法制备了包覆型SnO2 /CdS复合纳米粒子 .用ICP、XRD及TEM测定了样品的组成和平均晶粒尺寸 ,并通过HRTEM直接观察到样品的包覆结构 .与纯SnO2 纳米粒子相比较 ,SnO2 /CdS复合纳米粒子在波长为 36 0 - 5 80nm范围内有更强的吸收 ;由该复合纳米粒子制得的电极呈现出良好的光电转换特性 ,其最大IPCE值达 40 .9% ,远大于纯SnO2 纳米电极的IPCE( 0 .6 5 % ) ,而且光响应范围也从纯SnO2 的 30 0 - 4 0 0nm拓展到 30 0 - 5 5 0nm .
A new coated type of SnO 2/CdS nanosized composite particles was prepared by wet chemical method. The composition, structure and size of the product were determined by XRD, ICP, TEM and HRTEM. Compared with pure SnO 2 particle, it has stronger absorption in the range of longer wavelength (360～580nm) and shows good photo electrochemical character.The maximum value of IPCE was 40.9%,much greater than that of pure SnO 2 electrode, 0.65%. The range photoelectric response has been broadened from 300～400nm to 300～550nm.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1999年第10期925-929,共5页
Acta Physico-Chimica Sinica
基金
国家自然科学基金!资助项目 ( 2 96730 0 3)
