Economical, Green Synthesis of Fluorescent Carbon Nanoparticles and Their Use as Probes for Sensitive and Selective Detection of Mercury(II) Ions

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• 作者：Wenbo Lu ; Xiaoyun Qin ; Sen Liu ; Guohui Chang ; Yingwei Zhang ; Yonglan Luo ; Abdullah M. Asiri ; Abdulrahman O. Al-Youbi ; Xuping Sun
• 刊名：Analytical Chemistry
• 出版年：2012
• 出版时间：June 19, 2012
• 年：2012
• 卷：84
• 期：12
• 页码：5351-5357
• 全文大小：438K
• 年卷期：v.84,no.12(June 19, 2012)
• ISSN：1520-6882

文摘

The present article reports on a simple, economical, and green preparative strategy toward water-soluble, fluorescent carbon nanoparticles (CPs) with a quantum yield of approximately 6.9% by hydrothermal process using low cost wastes of pomelo peel as a carbon source for the first time. We further explore the use of such CPs as probes for a fluorescent Hg²⁺ detection application, which is based on Hg²⁺-induced fluorescence quenching of CPs. This sensing system exhibits excellent sensitivity and selectivity toward Hg²⁺, and a detection limit as low as 0.23 nM is achieved. The practical use of this system for Hg²⁺ determination in lake water samples is also demonstrated successfully.