A rapid and sensitive colorimetric assay method for Co2+ based on the modified Au nanoparticles (NPs): Understanding the involved interactions from experiments and simulations
文献类型：期刊论文
| 作者 | 吴爱国.陈亮 ; Yumin Lenga, Fuqiang Zhanga,c, Yujie Zhanga, Xiaoqin Fub, Yanbo Wengb, Liang Chena,∗, Aiguo Wua,∗ |
| 刊名 | Talanta
 |
| 出版日期 | 2012-03-29 |
| 卷号 | 206期号:94页码:271—277 |
| 通讯作者 | 吴爱国.陈亮 |
| 合作状况 | 李雨桐 |
| 中文摘要 | We previously reported a colorimetric assay method for Co2+ based on the thioglycolic acid (TGA) functionalized hexadecyl trimethyl ammonium bromide (CTAB) modified Au NPs. However, the detection limit of 3 × 10？7M was still higher than that of the sanitary standard for drinking water (6.8 × 10？8 M). In addition, the interactions between the modifier and Au NPs, and between the modifier-Au NPs and Co2+ remain to be clarified and confirmed. Thus, in the present study, the modified Au NPs solution was dialyzed and its detection limit was optimized to be 5 ×10？10 M. The interactions between the modifier and Au NPs, and between the modifier-Au NPs and Co2+ were investigated in both experimental characterizations and theoretical calculations, consistently confirming that the Au NPs were modified by the negatively charged anions of [SCH2CO2]2？ through Au–S bonds and Co2+ was recognized by the modifier- Au NPs through Co O chelate bonds. The results of X-ray photoelectron spectroscopy (XPS) suggest that there were no chemical bonds formed between CTAB and Co2+. Moreover, the colorimetric assay of Co2+ using the modified Au NPs has been proved to be a rapid, very sensitive and highly selective method. The validation of the method was carried out by analysis of a certified reference material, GSBZ 50030-94. |
| 学科主题 | 材料科学 |
| 原文出处 | SCI收录 |
| 公开日期 | 2013-12-16 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/9594]  |
| 专题 | 宁波材料技术与工程研究所_宁波所知识产出 |
| 推荐引用方式 GB/T 7714 | 吴爱国.陈亮,Yumin Lenga, Fuqiang Zhanga,c, Yujie Zhanga, Xiaoqin Fub, Yanbo Wengb, Liang Chena,∗, Aiguo Wua,∗. A rapid and sensitive colorimetric assay method for Co2+ based on the modified Au nanoparticles (NPs): Understanding the involved interactions from experiments and simulations[J]. Talanta,2012,206(94):271—277. |
| APA | 吴爱国.陈亮,&Yumin Lenga, Fuqiang Zhanga,c, Yujie Zhanga, Xiaoqin Fub, Yanbo Wengb, Liang Chena,∗, Aiguo Wua,∗.(2012).A rapid and sensitive colorimetric assay method for Co2+ based on the modified Au nanoparticles (NPs): Understanding the involved interactions from experiments and simulations.Talanta,206(94),271—277. |
| MLA | 吴爱国.陈亮,et al."A rapid and sensitive colorimetric assay method for Co2+ based on the modified Au nanoparticles (NPs): Understanding the involved interactions from experiments and simulations".Talanta 206.94(2012):271—277. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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