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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，有利于球形小粒子（＜4nm）的生成
Hydrazine hydrate was used as reductant to control the chemical reduction reaction, pure copper colloids were prepared from the solution of sulfuric acid steel.The effect of surfactant concentration on the size and agglomeration of colloidal particles, UV-Vis spectra, colloidal particle size, The results of the agglomeration show that agglomeration of particles can be effectively prevented in the presence of higher concentrations of surfactant, which is advantageous for the formation of spherical small particles (<4 nm)