| Shape controllable preparations of PbS nanocrystals using cysteine as the precursor of S^2- ions |
| |
| 引用本文： | BAO Haobo HAN Wei GAO Mingyuan. Shape controllable preparations of PbS nanocrystals using cysteine as the precursor of S^2- ions[J]. 科学通报(英文版), 2006, 51(21): 2576-2580. DOI: 10.1007/s11434-006-2169-y |
| |
| 作者姓名： | BAO Haobo HAN Wei GAO Mingyuan |
| |
| 作者单位： | Key Laboratory of Colloid, Interface Science and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China |
| |
| 基金项目： | Acknowledgements This work was supported by the National Natural Science Foundation of China （Grant Nos. 20225313, 90201006 and 90206024）. |
| |
| 摘 要： | Flowerlike, spherical and cubic PbS nanoparticles have been successfully synthesized by refluxing cysteine and lead nitrate in an alkaline solu- tion. The influences of the cysteine to Pb2 molar ratio, the pH value of the reaction mixture as well as the refluxing time on the shape of PbS nanoparticles were investigated. Detailed experimental results demonstrated that a higher molar ratio of cysteine to Pb2 (5.2:1) and shorter refluxing time favor the for- mation of flowerlike PbS nanoparticles at pH 9.0. While lower pH value (8.0) favors the formation of spherical PbS nanoparticles, and higher pH value (10.0), however, favors the formation of cubic PbS nanoparticles. The mechanism for the shape control of PbS nanoparticles is discussed.
|
| 关 键 词： | 形状调整 PbS 纳米晶体 半胱氨酸 制备 前体 |
| 文章编号： | 10.0007/s11434-006-2169-y |
| 收稿时间： | 2006-02-27 |
| 修稿时间： | 2006-02-272006-06-12 |
Shape controllable preparations of PbS nanocrystals using cysteine as the precursor of S2− ions |
| |
| Haobo Bao,Wei Han,Mingyuan Gao. Shape controllable preparations of PbS nanocrystals using cysteine as the precursor of S2− ions[J]. Chinese science bulletin, 2006, 51(21): 2576-2580. DOI: 10.1007/s11434-006-2169-y |
| |
| Authors: | Haobo Bao Wei Han Mingyuan Gao |
| |
| Affiliation: | (1) Key Laboratory of Colloid, Interface Science and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100080, China |
| |
| Abstract: | Flowerlike, spherical and cubic PbS nanoparticles have been successfully synthesized by refluxing cysteine and lead nitrate in an alkaline solu- tion. The influences of the cysteine to Pb2 molar ratio, the pH value of the reaction mixture as well as the refluxing time on the shape of PbS nanoparticles were investigated. Detailed experimental results demonstrated that a higher molar ratio of cysteine to Pb2 (5.2:1) and shorter refluxing time favor the for- mation of flowerlike PbS nanoparticles at pH 9.0. While lower pH value (8.0) favors the formation of spherical PbS nanoparticles, and higher pH value (10.0), however, favors the formation of cubic PbS nanoparticles. The mechanism for the shape control of PbS nanoparticles is discussed. |
| |
| Keywords: | shape control PbS nanocrystals cysteine. |
| 本文献已被 维普 万方数据 SpringerLink 等数据库收录！ |
| 点击此处可从《科学通报(英文版)》浏览原始摘要信息 |
|
点击此处可从《科学通报(英文版)》下载全文 |
