| 以聚丙烯酰胺作光敏剂光化学制备纳米Ag粒子的研究 |
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| 引用本文： | 唐春,董守安. 以聚丙烯酰胺作光敏剂光化学制备纳米Ag粒子的研究[J]. 贵金属, 2004, 25(4): 58-62 |
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| 作者姓名： | 唐春 董守安 |
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| 作者单位： | 昆明贵金属研究所,云南,昆明,650221 |
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| 基金项目： | 云南省自然科学基金重点项目资助(2000E0008Z) |
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| 摘 要： | 研究了用聚丙烯酰胺作光敏剂的纳米Ag粒子的光化学合成。结果表明，Ag^ -PAM-PVP乙醇水溶液中，PAM明显地加速了光化学反应。讨论了PAM作光敏剂的光还原反应机理。在选择的体系中实验了各种组分的影响。在有或无丙酮存在下，TEM表征获得的胶体银粒子，平均直径分别为10．2nm和32．1nm，二者均具有良好的分散性。
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| 关 键 词： | 聚丙烯酰胺 光敏剂 纳米 PAM Ag^＋ 制备 光化学 粒子 光还原 乙醇水溶液 |
| 文章编号： | 1004-0676(2004)04-0058-05 |
| 修稿时间： | 2004-06-04 |
Preparation of Ag Nanoparticles by Photochemical Method in the Presence of Polyacrylamide as Photosensitive Agent |
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| TANG Chun,DONG Shouan. Preparation of Ag Nanoparticles by Photochemical Method in the Presence of Polyacrylamide as Photosensitive Agent[J]. Precious Metals, 2004, 25(4): 58-62 |
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| Authors: | TANG Chun DONG Shouan |
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| Affiliation: | TANG Chun,DONG Shouan* |
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| Abstract: | A liquid phase photochemical method using polyacrylamide(PAM) as photosensitive agent to prepare Ag nanoparticles has been studied in detail. The result showed that the PAM accelerated the photochemical reaction obviously in the Ag(I)-PAM- polyvinylpyrrolidone(PVP)- ethanol aqueous solution. The mechanism of photochemical reduction of Ag(I) ion occurring inside Ag(I)-PAM complex in the presence of PAM was suggested. The influence of the system constituents, such as PAM, PVP and acetone, etc., on the photochemical preparation process was investigated. The fine-disperse Ag nanoparticles of 10.2nm in average diameter were obtained in the Ag(I)-PAM-PVP-acetone-ethanol system under the optimal conditions. In this system without acetone, the average diameter of the Ag nanoparticles was 32.1nm. |
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| Keywords: | Metal materials Ag nanoparticles Photochemical method Preparation Polyacrylamide |
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