| 光化学还原法制备纳米银溶胶 |
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| 引用本文： | 张伟,谈发堂,乔学亮,陈建国. 光化学还原法制备纳米银溶胶[J]. 材料导报, 2012, 26(12): 32-35 |
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| 作者姓名： | 张伟 谈发堂 乔学亮 陈建国 |
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| 作者单位： | 1. 华中科技大学材料科学与工程学院,武汉,430074
2. 华中科技大学材料科学与工程学院,武汉430074;华中科技大学材料成形与模具技术国家重点实验室,武汉430074 |
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| 基金项目： | 国家重点基础研究发展计划(973)资助，湖北省自然科学基金，广东省教育部产学研结合资助 |
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| 摘 要： | 采用光化学还原法,以银氨溶液为前驱体,PVP为保护剂制备分散性良好和粒径分布窄的纳米银溶胶。利用透射电子显微镜(TEM)和紫外-可见分光光度计(UV-Vis)对纳米银溶胶进行表征。结果表明,紫外光照时间和PVP浓度都对该反应有明显的影响,在[Ag(NH3)2]+浓度为1mmol/L,n(PVP)/n([Ag(NH3)2]+)=50时,反应30min就可以生成理想的纳米银溶胶。此外,该方法没有使用有毒添加剂,制备的纳米银溶胶更为安全,从而可以应用在更为广阔的领域。
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| 关 键 词： | 纳米银 胶体 紫外光照 聚乙烯吡咯烷酮 |
Preparation of Nano-silver Sol by Photochemical Reduction Method |
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| ZHANG Wei , TAN Fatang , QIAO Xueliang , CHEN Jiangguo. Preparation of Nano-silver Sol by Photochemical Reduction Method[J]. Materials Review, 2012, 26(12): 32-35 |
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| Authors: | ZHANG Wei TAN Fatang QIAO Xueliang CHEN Jiangguo |
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| Affiliation: | ZHANG Wei1,TAN Fatang1,2,QIAO Xueliang1,2,CHEN Jiangguo1,2 (1 College of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074; 2 State Key Laboratory of Plastic Forming Simulation and Die and Mold Technology,Huazhong University of Science and Technology,Wuhan 430074) |
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| Abstract: | Nano-silver sol with good dispersibility and narrow particle size distribution was prepared by photochemical reduction of silver ammonia solution precursor with polyvinylpyrrolidone(PVP) as protective agent.Transmission electron microscope(TEM) and UV-Vis were also employed to characterize the prepared nano-silver sol.The results indicate that UV irradiation time and the concentration of PVP both have obvious influence for this reaction.A good morphology and dispersibility of silver nano-sol could be synthesized after irradiation 30min,when the mole ratio of PVP/[Ag(NH3)2]+ in reaction solution equal to 50.Furthermore,the process of synthesizing silver nano-sol does not contain any toxic additive,which makes the product possesse a wide application in the future. |
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| Keywords: | nano-silver colloid UV irradiation PVP |
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