铜胶体的制备及光谱研究

Preparation of Copper Colloid and it's Absorption Spectrum

以水合肼为还原剂通过控制化学还原反应.从硫酸钢溶液中制备出纯金属铜胶体.研究了表面活性剂的浓度对胶体粒子大小及团聚等的影响，紫外-可见光谱与胶体粒子尺寸及团聚的关系结果表明，在较高浓度的表面活性剂存在下，能有效地防止粒子的团聚。

The colloid of pure copper was prepared from the solution of copper sulfate with hydrazine by controlling the condition of reductive reaction. The effect of thc concentration of surfactant, sodium dodecyl on the size, shape and agglomeration was studied by using UV-Vis,spectrum. It's Shown that the surfactant can effectively prevent the agglomeration of patrticles and favor the formation of spherical particles smaller than 4nm when the concentration of surfactant is high enough.