| 金纳米片的低温水相还原法制备及表征 |
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| 引用本文： | 董佳敏,宋玉哲,李旭东,刘国汉,韩根亮,李工农.金纳米片的低温水相还原法制备及表征[J].甘肃科学学报,2009,21(4):31-34. |
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| 作者姓名： | 董佳敏 宋玉哲 李旭东 刘国汉 韩根亮 李工农 |
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| 作者单位： | 1. 兰州理工大学,材料科学与工程学院,甘肃,兰州,730050
2. 甘肃省科学院,传感技术研究所,甘肃,兰州,730000 |
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| 基金项目： | 甘肃省中青年科技基金项目0711RJYA003 |
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| 摘 要： | 采用PVP作表面活性剂,抗坏血酸还原氯金酸的方法制备了单晶金纳米片,利用透射电镜、高分辨透射电镜和紫外可见光谱对产物进行了形貌分析和结构表征,结果显示纳米片为面心立方结构的单晶金,具有良好的晶体结构.紫外可见光谱中除出现位于580 nm的弱表面等离子体共振吸收峰（SPR）和位于975 nm处的强SPR吸收峰外,首次发现在740 nm和835 nm处同时出现了较难观察到的2个四极巨共振峰.并对金纳米片的生长机理进行了初步的分析和探讨,认为表面活性剂PVP诱导了纳米片不同晶面的生长速度.
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| 关 键 词： | 金纳米片 还原法 单晶 SPR 机理 |
Structural and Spectroscopic Studies of Single-crystal Au Nanoplates Synthesized by Low-temperature Chemical Reduction |
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| DONG Jia-min,SONG Yu-zhe,LI Xu-dong,LIU Guo-han,HAN Gen-liang,LI Gong-nong.Structural and Spectroscopic Studies of Single-crystal Au Nanoplates Synthesized by Low-temperature Chemical Reduction[J].Journal of Gansu Sciences,2009,21(4):31-34. |
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| Authors: | DONG Jia-min SONG Yu-zhe LI Xu-dong LIU Guo-han HAN Gen-liang LI Gong-nong |
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| Institution: | DONG Jia-min1,SONG Yu-zhe2,LI Xu-dong1,LIU Guo-han2,HAN Gen-liang2,LI Gong-nong2(1.School of Material Science and Engineering,Lanzhou University of Science and Technology,Lanzhou 730050,China,2.Institute of Sensor Technology,Gansu Academy of Sciences,Lanzhou 730000,China) |
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| Abstract: | Au nanoplates were successfully synthesized from the reduction of HAuCl4 by ascorbic acid,in the presence of poly(vinyl pyrrolidone)(PVP).The morphologies and structure of the products were characterized by TEM,HRTEM and UV-vis spectrum.TEM images indicate nanoplates were fcc single crystals with average edge length of 600 nm.For the first time,their UV-vis spectra not only shows a strong absorption peak and a weak absorption peak centered at ~975 nm and ~580 nm,which originated from in-plane dipole resonan... |
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| Keywords: | SPR |
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