络合沉淀法合成纳米氧化铜粉体及其性能表征

Preparation of Nanophase CuO Composite Powder and Its Electrochemical Behavior

以Ｃu（ＮＯ３）２为原料，采用络合沉淀法合成了纳米级CuＯ粉体，并对产品结构性能进行了表征．探讨了氨水，柠檬酸，乙二胺三种不同络合剂对粉体粒径的影响，三种络合剂得到粉体平均粒径在４０～６０nm之间，粉体的粒径随着络和物稳定性的增加而增大．获得了以氨水为络合剂制备纳米氧化铜粉体的最佳工艺条件，以氨水为络合剂所得ＣuＯ粉体平均粒径４０nm，分散性好、收率高．

Nanophase CuO powders were made from Cu(NO3)(2) by the complexing-precipitate method, and the effects of complexing agent on particle sizes studied. The results show that CuO powders are smaller in size and slightly aggregate. The sample particles thus obtained axe spherical and their average particle sizes are between 40similar to60mn. With NH3.H2O as the complexing agent, the best reaction conditions for preparing nanophase CuO are that the reaction temperature is 30degreesC and the molar ratio of Cu(NO3)(2) to NaOH is 1:3.