迟聪聪,夏亮,王曌,张萌,任超男,袁亮,张素风.丙三醇-水二元溶剂法抗氧化纳米铜的制备[J].包装工程,2020,41(13):131-138.
CHI Cong-cong,XIA Liang,WANG Zhao,ZHANG Meng,REN Chao-nan,YUAN Liang,ZHANG Su-feng.Preparation of Antioxidant Copper Nanoparticles in Glycerol-water Binary Solvent System[J].Packaging Engineering,2020,41(13):131-138. |
| 丙三醇-水二元溶剂法抗氧化纳米铜的制备 |
| Preparation of Antioxidant Copper Nanoparticles in Glycerol-water Binary Solvent System |
| 投稿时间：2019-10-09 修订日期：2020-07-10 |
| DOI：10.19554/j.cnki.1001-3563.2020.13.018 |
| 中文关键词: 纳米铜 粒径可控 抗氧化 |
| 英文关键词: nano-copper controllable particle size antioxidant |
| 基金项目:国家自然科学基金（31600476）；陕西科技大学轻化工程国家级实验教学示范中心项目（2018QSG01-06）；陕西科技大学大学生创新创业训练计划（2018033） |
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| 中文摘要: |
| 目的 基于纳米铜在空气中易被氧化的缺点，制备单分散纳米铜颗粒，并研究改性对其抗氧化性能的影响。方法 通过丙三醇-水二元溶剂热法用抗坏血酸还原Cu2+制备纳米铜颗粒。研究丙三醇/水体积比、抗坏血酸用量、聚乙烯吡咯烷酮（PVP）浓度对纳米铜粒径及分散性的影响，并采用柠檬酸和油酸对其进行表面改性处理。结果 研究发现，当丙三醇和水的体积比为3∶2，抗坏血酸浓度为0.004 mol/L，PVP浓度为0.006 mol/L时，能够得到粒径均一（(80±10) nm）且分散性良好的纳米铜。真空环境下保存的纳米铜只有纯铜晶相，但在空气中保存30 d后部分被氧化为氧化铜或氧化亚铜。采用柠檬酸改性纳米铜在室温到243 ℃范围内能保持良好的热稳定性。结论 采用丙三醇-水二元溶剂热法制备出了粒径均一、分散性良好的纳米铜。柠檬酸与油酸改性能够显著提高纳米铜的抗氧化与热稳定性能，其改性后在空气中保存30 d仍不被氧化。 |
| 英文摘要: |
| The work aims to prepare the monodisperse nano-copper particles in a green way and study the effect of modification on its oxidation resistance based on the shortcomings of nano-copper being easily oxidized in air. Nano-copper particles were prepared by reduction of Cu2+ with ascorbic acid by the glycerol-water binary solvothermal method. The effects of glycerol/water volume ratio, ascorbic acid dosage and polyvinylpyrrolidone (PVP) concentration on the particle size and dispersibility of nano-copper were studied. The surface modification treatment of nano-copper was carried out with citric acid and oleic acid. The study showed that, under the following conditions: glycerol/water volume ratio of 3︰2, ascorbic acid concentration of 0.004 mol/L, and PVP concentration of 0.006 mol/L, nano-copper with uniform particle size ((80±10) nm) and good dispersibility could be obtained. The nano-copper preserved in a vacuum environment had only a pure copper crystal phase, but was partially oxidized to copper oxide or cuprous oxide after being stored in air for 30 days. The citric acid modified nano-copper could maintain good thermal stability at 243 ℃. Nano-copper prepared by glycerol-water binary solvothermal method has uniform particle size and good dispersibility. The modification with citric acid and oleic acid can significantly improve the oxidation resistance and thermal stability of nano-copper. After modification, it is not oxidized after being stored in air for 30 days. |
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