Prepration of Cu nanoparticles with NaBH4 by aqueous reduction method

来源期刊:中国有色金属学报(英文版)2012年第1期

论文作者:刘清明 周德璧 山本雄也 市野良一 兴户正纯

文章页码:117 - 123

关键词:纳米铜颗粒;水性还原法;前驱体;反应进程

Key words:Cu nanoparticles; aqueous reduction method; precursor; reaction process

摘    要:在碱性溶液中用NaBH4还原Cu2+制备纳米铜颗粒,研究NaBH4浓度和滴加速率对Cu纳米颗粒制备的影响。反应的最佳条件是:0.2 mol/L Cu2+,溶液pH 12,温度313 K,1%明胶作为分散剂,将0.4 mol/L NaBH4溶液以50 mL /min的速率加入CuSO4溶液中。氨水是最佳的络合剂。采用一系列实验研究不同时间点的反应进程。

Abstract: Cu nanoparticles were prepared by reducing Cu2+ ions with NaBH4 in alkaline solution. The effects of NaBH4 concentration and dripping rate on the formation of Cu nanoparticles were studied. The optimum conditions are found to be 0.2 mol/L Cu2+, solution with pH=12, temperature of 313 K and 1% gelatin as dispersant, to which 0.4 mol/L NaBH4 is added at a dripping rate of 50 mL/min. NH3·H2O is found to be the optimal complexant to form the Cu precursor. A series experiments were conducted to study the reaction process at different time points.

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