| 不同形貌金纳米粒子的制备及其光谱特性 |
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| 引用本文： | 王平波,宋玉哲,杜雪岩,韩根亮,刘国汉.不同形貌金纳米粒子的制备及其光谱特性[J].功能材料与器件学报,2010,16(2). |
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| 作者姓名： | 王平波 宋玉哲 杜雪岩 韩根亮 刘国汉 |
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| 作者单位： | 1. 兰州理工大学,甘肃省有色金属材料省部共建国家重点实验室,兰州,730050
2. 甘肃省科学院传感技术研究所,兰州,730000 |
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| 基金项目： | 兰州理工大学科研发展基金，甘肃省中青年自然科学基金 |
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| 摘 要： | 本文以柠檬酸三钠(Na3C6H5O7.2H2O)保护的小粒径金胶体为晶种,采用晶种法制备了不同形状的金纳米粒子。利用透射电子显微镜(TEM)和紫外可见光谱(UV-Vis)对所制备的金纳米粒子进行了表征。结果表明,随着晶种量的增加,金纳米粒子的形状依次为水滴状、梭状和球状,并且发现梭状金纳米粒子位于850nm处的多极共振吸收峰。基于表征结果分析了不同形貌产物的可能形成机理。
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| 关 键 词： | 金纳米粒子 晶种法 制备 等离子体共振 |
Preparation and Optical Properties of Gold Nanoparticles with Different Shapes |
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| WANG Ping-bo,SONG Yu-zhe,DU Xue-yan,HAN Gen-liang,LIU Guo-han.Preparation and Optical Properties of Gold Nanoparticles with Different Shapes[J].Journal of Functional Materials and Devices,2010,16(2). |
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| Authors: | WANG Ping-bo SONG Yu-zhe DU Xue-yan HAN Gen-liang LIU Guo-han |
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| Abstract: | Using citrate-stabilized Au colloid as the seeds,we prepared gold nanoparticles with different shapes by a seeding method.TEM and UV-vis were used to characterize the as-prepared gold nanoparticles.The results indicated that the shape of the gold nanoparticles transformed from irregular-shape to spindle-shape.and finally to spherical-shape with the increasing of the amount of Au seeds.UV-Vis spectra show that spindle-shaped gold nanoparticles are of two muhipole-resonances peaks near 850 nm and 970 nm,respectively.The mechanisms of the form of gold nanoparticles with different shapes were also discussed. |
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| Keywords: | Gold nanoparticles Seed-mediated growth method Preparation Plasmon resonance |
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