纳米Cu(OH)_2分解温度对CuO粒度的影响  

Effect of decomposition temperature of nano-Cu(OH)_2 on granularity of CuO

作　　者：宫泮伟[1] 李在元[1] 翟玉春[1] 

机构地区：[1]东北大学材料与冶金学院辽宁

出　　处：《分子科学学报》2007年第5期322-327,共6页Journal of Molecular Science

基　　金：国家自然科学基金资助项目(5007401)

摘　　要：以CuSO4·5H2O和NaOH为原料，采用沉淀法制备得到Cu（OH）2纤维，再进行Cu（OH）2的分解反应．考察了在不同实验条件下温度对Cu（OH）2热分解过程的影响．结果表明：在反应温度20℃，反应终点pH值为12，搅拌速度为1200r·min^-1，NaOH溶液的滴加速度为50mL·min^-1 的反应条件下，得到的样品为纳米Cu（OH）2纤维，其直径为10-30nml、长度为1～6μm；在固相纳米Cu（OH）2热分解制备CuO过程中CuO粒径随温度的升高而增大，在温度不超过200℃时CuO的粒径约为20nm左右；在液相中先沉淀后升温时，产物的形貌为球形，CuO粒径随温度的升高而增大，低于80℃可得到纳米级的CuO．The Cu（OH）2 nanofibre were prepared by CuSO4·5H2O and NaOH as raw materials. The effect of temperature on thermal decomposition of Cu（OH）2 in different experimentation condition were studied. The result indicate that the nano-Cu（OH）2 have a diameter of 10-30 nm and a length of 1～6μm. The reaction conditions were： the concentration of CuSO4 solution was 0. 1mL·min^-1, that of NaOH solution was 4 mL·min^-1 , the dropping rate of NaOH solution was 50 mL·min^-1 , the reaction temperature was 25 ℃, the pH value of the reaction end was larger than 12, and the stirring rate was 1 200 r ·min^-1. The granularity of nano-CuO increase with temperature of Cu（OH）2 in solid thermal decomposition. The nano-CuO granularity was about 20 nm. The shape of nano-CuO was sphericity in solution precipitation after pyrogenation. The granularity of nano-CuO increase with temperature. The nano-CuO granularity was about 40 nm in 60℃ thermal decomposition. The figure of nano-CuO was fibre in solution pyrogenation after precipitation. The granularity of nano-CuO increase with temperature. The diameter of nano-CuO was about 10 nm, and length was about 100 nm in 60 ℃ thermal decomposition.

关 键 词：纳米CUO 纳米Cu(OH)2 热分解 

分 类 号：O614[理学—无机化学]