【摘要】：在40k Hz超聲波作用下,使用以Na BH4作為還原劑的化學還原法制備具有粒徑約300 nm~500 nm、產(chǎn)率約為80~90%的超細銅粉,其具有反應(yīng)溫度低反應(yīng)速率快的優(yōu)點。最佳制備條件為Cu SO4溶液初始濃度為20 g/L、Na BH4的加入量為1.5 g/L、p H值為11.5、反應(yīng)溫度20~30℃;反應(yīng)時間20~25 min。通過XPS、XRD、SEM對超細銅粉表面進行檢測發(fā)現(xiàn)分析表明所制備的超細銅粉呈類球狀,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，

本文編號：2317092