| 引用本文: | 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. |
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| 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。 |
| 关键词: 纳米铜 粒径可控 抗氧化 |
| DOI：10.19554/j.cnki.1001-3563.2020.13.018 |
| 分类号:TB383 |
| 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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| Preparation of Antioxidant Copper Nanoparticles in Glycerol-water Binary Solvent System |
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CHI Cong-cong, XIA Liang, WANG Zhao, ZHANG Meng, REN Chao-nan, YUAN Liang, ZHANG Su-feng
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a.National Demonstration Center for Experimental Light Chemistry Engineering Education b.Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper Development c.Key Laboratory of Paper based Functional Materials of China National Light Industry, Shaanxi University of Science & Technology, Xi'an 710021, China
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| Abstract: |
| 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. |
| Key words: nano-copper controllable particle size antioxidant |
