超声波法制备超细铜粉
发布时间：2018-11-07 17:42
【摘要】：在40k Hz超声波作用下,使用以Na BH4作为还原剂的化学还原法制备具有粒径约300 nm~500 nm、产率约为80~90%的超细铜粉,其具有反应温度低反应速率快的优点。最佳制备条件为Cu SO4溶液初始浓度为20 g/L、Na BH4的加入量为1.5 g/L、p H值为11.5、反应温度20~30℃;反应时间20~25 min。通过XPS、XRD、SEM对超细铜粉表面进行检测发现分析表明所制备的超细铜粉呈类球状,其表面有少量Cu2O和Cu(OH)2存在。
[Abstract]:Under the action of 40 k Hz ultrasonic wave, the ultrafine copper powder with a particle size of about 300 nm~500 nm, and a yield of about 80,90% was prepared by the chemical reduction method with Na BH4 as the reductant. It has the advantages of low reaction temperature and fast reaction rate. The optimum preparation conditions are as follows: the initial concentration of Cu SO4 solution is 20 g / L Lnna BH4, the addition amount is 1.5 g / L BH4, the reaction temperature is 2030 鈩，
本文编号：2317092
[Abstract]:Under the action of 40 k Hz ultrasonic wave, the ultrafine copper powder with a particle size of about 300 nm~500 nm, and a yield of about 80,90% was prepared by the chemical reduction method with Na BH4 as the reductant. It has the advantages of low reaction temperature and fast reaction rate. The optimum preparation conditions are as follows: the initial concentration of Cu SO4 solution is 20 g / L Lnna BH4, the addition amount is 1.5 g / L BH4, the reaction temperature is 2030 鈩，
本文编号：2317092
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