He Ping, Shen Xinghai, Gao Hongcheng
Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
J Colloid Interface Sci. 2005 Apr 15;284(2):510-5. doi: 10.1016/j.jcis.2004.10.060.
We report herein the size-controlled preparation of monodispersed cuprous oxide octahedron nanocrystals smaller than 100 nm. The method is based on the reduction of copper nitrate in Triton X-100 water-in-oil (w/o) microemulsions by gamma-irradiation. The average edge length of the octahedron-shaped nanocrystals varies from 45 to 95 nm as a function of the dose rate. The quantum confinement effect was illustrated by the blueshift in the optical absorption. In addition, the growth process was also traced by absorption spectra.
我们在此报告小于100 nm的单分散氧化亚铜八面体纳米晶体的尺寸可控制备。该方法基于在γ辐射下，于Triton X - 100油包水（w/o）微乳液中还原硝酸铜。八面体形状的纳米晶体的平均边长随剂量率的变化在45至95 nm之间。光吸收中的蓝移说明了量子限制效应。此外，还通过吸收光谱追踪了生长过程。
