Preparation of Controllable Core-Shell Gold Nanoparticles and Its Application in Detection of Silver Ions
文献类型：期刊论文
| 作者 | Haowen Huang ; Caiting Qu ; Liu XY(刘宣勇) ; Shaowen Huang ; Zhongjian Xu ; Bo Liao ; Yonglong Zeng ; Paul K. Chu |
| 刊名 | ACS Applied Materials & Interfaces
 |
| 出版日期 | 2011-01-20 |
| 卷号 | 3期号:2页码:183-190 |
| ISSN号 | 1944-8244 |
| 其他题名 | Preparation of Controllable Core-Shell Gold Nanoparticles and Its Application in Detection of Silver Ions |
| 通讯作者 | Paul K. Chu |
| 中文摘要 | We report a novel shell technique to prepare controllable core-shell nanoparticles. In this technique, the shell is formed when the core reacts with metal ions and Na2S2O3 and the size of the core and thickness of the shell can be controlled. Transmission electron microscopy and X-ray diffraction reveal that the shell consists of insoluble complex salts comprising Au2S, AuAgS, and Ag3AuS2. The resulting core-shell nanoparticles obtained at different reaction stages demonstrate that the formation of Au2S, AuAgS, and Ag3AuS2 shell proceeds from the outside. The morphological evolution of the particles changes significantly with reaction time demonstrating that formation of the shell results from diffusion in the solid shell. The coreshell nanoparticles produced by this technique can be used as nanosensors to detect Agt in aqueous media with high selectivity and sensitivity. The excellent selectivity for Agt is demonstrated by comparing the response to other metal ions. In addition, our evaluation indicates that gold nanorods offer higher sensitivity than gold nanospheres. KEYWORDS: core-shell nanoparticles, gold nanoparticles, duffusion |
| 学科主题 | 生物材料 |
| 收录类别 | SCI收录 |
| WOS记录号 | WOS:000287639400015 |
| 公开日期 | 2012-07-04 |
| 源URL | [http://ir.sic.ac.cn/handle/331005/956]  |
| 专题 | 上海硅酸盐研究所_生物材料与组织工程研究中心_期刊论文 |
| 推荐引用方式 GB/T 7714 | Haowen Huang,Caiting Qu,Liu XY,et al. Preparation of Controllable Core-Shell Gold Nanoparticles and Its Application in Detection of Silver Ions[J]. ACS Applied Materials & Interfaces,2011,3(2):183-190. |
| APA | Haowen Huang.,Caiting Qu.,刘宣勇.,Shaowen Huang.,Zhongjian Xu.,...&Paul K. Chu.(2011).Preparation of Controllable Core-Shell Gold Nanoparticles and Its Application in Detection of Silver Ions.ACS Applied Materials & Interfaces,3(2),183-190. |
| MLA | Haowen Huang,et al."Preparation of Controllable Core-Shell Gold Nanoparticles and Its Application in Detection of Silver Ions".ACS Applied Materials & Interfaces 3.2(2011):183-190. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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