| Autor: |
Yan Wang, Bo-Xin Dou, Jia-Ying Xin, Peng Gao, Ye Xue |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Materials Express. 10:190-198 |
| ISSN: |
2158-5849 |
| DOI: |
10.1166/mex.2020.1627 |
| Popis: |
A Mb-functionalized AuNPs system for copper ion detection based on coordination chemistry of Mb and copper ion to mediate the assembly of Mb-functionalized gold nanoparticles was presented. Mb-functionalized AuNPs solution was stable in red color. While the presence of Cu2+ induces significant assembly of Mb-functionalized AuNPs by forming Mb2-Cu coordination along with red-to wine red-to-purple-to-blue colour changes. The solution color was related to the assembly degree of Mb-functionalized AuNPs. Meanwhile, good linear relationship of Cu2+ along with A 645 nm/525 nm values could be obtained for its quantitative determination. Furthermore, Mb-functionalized AuNPs system shows excellent selectivity to Cu2+ against any other tested metal ions and anions, and good sensitivity with LOD of 3.26 nmol/L for real water samples. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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