采用硝酸诱导的晶种法制备金单晶纳米带,利用TEM、HRTEM和UV-vis技术对产物进行形貌、结构表征和吸收性能分析.发现产物的形态有纳米带、纳米片和纳米颗粒,但以纳米带为主.纳米带为面心立方结构金单晶.UV-vis显示,产物的微弱吸收峰位于550 nm和强吸收峰位于975 nm,分别起源于纳米带横轴直径与长度方向的表面等离子体共振.金纳米带的生长机制进是,小尺寸纳米片在硝酸诱导作用下通过表面偶极作用进行自组装.
Gold single-crystal nanobelts were synthesized by a nitric-acid-induced seed-mediated growth method. The morphologies and structures of the products were characterized by TEM and HRTEM; the absorption property was analyzed by UV-vis spectrum. TEM observation shows that nanobelts are dominant morphology with perfect fcc single-crystal structure and there are some nanoplates and nanoparticles. The UV-vis spectra reveal a strong longitudinal surface plasma resonance (SPR) band and a weak transverse SPR band centered at～75 nm and ～550 nm, respectively. The growth mechanism of the nanobelts is the self-assembly of the adjacent nanoplates through surface dipole-dipole interaction with nitric acid induction.
参考文献
| [1] | 兰新哲,金志浩,赵西成,苟林峰.PVP保护还原法制备纳米金溶胶[J].稀有金属材料与工程,2003(01):50-53. |
| [2] | 朱梓华,朱涛,刘忠范.大粒径单分散金纳米粒子的水相合成[J].物理化学学报,1999(11):966-970. |
| [3] | 李中春,周全法.SDS/Vc/H2O微乳液中纳米金的合成[J].稀有金属材料与工程,2007(06):1055-1057. |
| [4] | Zhang J L et al.[J].Angewandte Chemie International Edition,2006,45:1116. |
| [5] | Yu Y Y et al.[J].Journal of Physical Chemistry B,1997,101(34):6661. |
| [6] | Tang Z et al.[J].Science,2002,297:237. |
| [7] | Sun Y G;Mayers B;Xia Y N et al.[J].Nano Letters,2003,3(05):675. |
| [8] | Chu HC;Kuo CH;Huang MH .Thermal aqueous solution approach for the synthesis of triangular and hexagonal gold nanoplates with three different size ranges[J].Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics,2006(2):808-813. |
| [9] | Gao JX.;Bender CM.;Murphy CJ. .Dependence of the gold nanorod aspect ratio on the nature of the directing surfactant in aqueous solution[J].Langmuir: The ACS Journal of Surfaces and Colloids,2003(21):9065-9070. |
| [10] | Siegfried M J et al.[J].Journal of the American Chemical Society,2006,128:10356. |
| [11] | Wu HY;Huang WL;Huang MH .Direct high-yield synthesis of high aspect ratio gold nanorods[J].Crystal growth & design,2007(4):831-835. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%