黄福东,左志超,陈玉华,等.液相还原两步法合成纳米铜的工艺研究[J].精密成形工程,2019,11(5):161-165.
HUANG Fu-dong,ZUO Zhi-chao,CHEN Yu-hua,et al.Synthesis of Copper Nanoparticles by Two-step Liquid Phase Reduction[J].Journal of Netshape Forming Engineering,2019,11(5):161-165. |
| 液相还原两步法合成纳米铜的工艺研究 |
| Synthesis of Copper Nanoparticles by Two-step Liquid Phase Reduction |
| 投稿时间：2019-07-21 修订日期：2019-09-10 |
| DOI：10.3969/j.issn.1674-6457.2019.05.025 |
| 中文关键词: 液相还原法 两步还原法 纳米铜 |
| 英文关键词: liquid phase reduction two-step reduction method copper |
| 基金项目:江西省科技厅重点研发计划（20171BBE50010）；江西省优势科技创新团队重点项目（20181BCB19002） |
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| 中文摘要: |
| 目的 研究液相还原步法制备铜纳米颗粒过程中，工艺参数对铜纳米颗粒形貌尺寸的影响。方法 在水体系下，先用葡萄糖将铜离子预还原为氧化亚铜，再使用次亚磷酸钠将氧化亚铜还原成纳米铜颗粒。分别改变反应过程中的PVP添加量、次亚磷酸钠的浓度以及加热温度，用场发射扫描电镜对所得的产物进行形貌观察。结果 PVP添加量与次亚磷酸钠浓度的提高，都使得铜纳米颗粒的尺寸逐渐减小，并且过量的PVP会造成铜纳米颗粒的团聚；然而随着温度的提高，铜纳米颗粒的尺寸先减小再增大。结论 实验的最佳工艺参数为：PVP添加量为2 g，次亚磷酸钠浓度为1.2 mol/L，反应温度为60 ℃。此条件下所制备出的铜纳米颗粒分散性好、尺寸分布均匀，粒径为400 nm左右。 |
| 英文摘要: |
| The paper aims to study the effects of process parameters on the morphology of copper nanoparticles during preparation of copper nanoparticles by liquid phase reduction. In the water system, the copper ions were pre-reduced to cuprous oxide with glucose, and the cuprous oxide was reduced to copper nanoparticles with sodium hypophosphite. The amount of PVP added, the concentration of sodium hypophosphite and the heating temperature were changed respectively. The morphology of the obtained product was observed by field emission scanning electron microscopy. The increase of PVP and sodium hypophosphite increased the size of copper nanoparticles, and excess PVP caused agglomeration of copper nanoparticles; however, as the temperature increased, the size of the copper nanoparticles first decreased and then increased. The optimum process parameters of the experiment are as follows: the amount of PVP added is 2 g, the concentration of sodium hypophosphite is 1.2 mol/L, and the reaction temperature is 60 ℃. The copper nanoparticles prepared under these conditions have good dispersibility, uniform size distribution, and a particle size of about 400 nm. |
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