| 明胶水溶液中银离子的光还原 |
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| 引用本文： | 赵翔,崔卫东,彭必先.明胶水溶液中银离子的光还原[J].中国科学院研究生院学报,1999(2). |
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| 作者姓名： | 赵翔 崔卫东 彭必先 |
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| 作者单位： | 中国科学院感光化学研究所!北京100101 |
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| 摘 要： | 利用紫外线辐射ＡｇＮＯ３明胶（ＣＨ３）２ＣＨＯＨ 水溶液制备了银纳米颗粒，并用吸收光谱和透射电镜跟踪研究了其形成过程．发现增大明胶和银离子浓度可以加速银颗粒的生成，其粒径随明胶浓度增大而减小，银颗粒的光还原过程属于准一级反应；明胶保护下的银纳米颗粒具有很高的稳定性．提出了ＡｇＮＯ３明胶（ＣＨ３）２ＣＨＯＨ水溶液中Ａｇ ＋ 的光还原及明胶对银颗粒的稳定机理
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| 关 键 词： | 银离子 光还原 明胶水溶液 机理 |
Photoreduction of Silver Ions in Gelatin Aqueous Solution |
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| Zhao Xiang,Cui Weidong,Peng Bixian.Photoreduction of Silver Ions in Gelatin Aqueous Solution[J].Journal of the Graduate School of the Chinese Academy of Sciences,1999(2). |
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| Authors: | Zhao Xiang Cui Weidong Peng Bixian |
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| Abstract: | The silver nanoparticles was prepared by illuminating AgNO 3 gelatin (CH 3) 2CHOH aqueous solution and its formation process was studied by means of UV-vis absorption spectra and transmission election micrographs.The process of the of the Ag photoreduction follows guise first order reaction.Increasing the concentrations of gelatin and silver ions both enhance the formation of silver nanoparticles.And the gelatin concentration increasing lead to the decreasing of the particle sizes;Gelatin has a strong stabilizing capacity towards silver nanoparticles.The mechanisms of the Ag photoredution in AgNO 3 gelation (CH 3) 2CHOH aqueous solution and the stabilizing of gelatin towards silver nanoparticles was proposed |
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| Keywords: | silver ions photoreduction gelatin solution mechanism |
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