Citation: ZHANG Xiao-Zhe, ZHANG Wen-Jun, ZHANG Zu-Xing, XIAO Chang-He, WANG Wan-Hua, PAN Le, SHEN Yu-Hua. One Step Preparation of N-doped Carbon Dots with High Fluorescence Yield for Selective Detection of Mercury(Ⅱ) Ion[J]. Chinese Journal of Inorganic Chemistry, ;2015, (1): 1-6. doi: 10.11862/CJIC.2015.027 shu

One Step Preparation of N-doped Carbon Dots with High Fluorescence Yield for Selective Detection of Mercury(Ⅱ) Ion

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School of Chemistry and Chemical Engineering, Lab for Clean Energy & Green Catalysis, Anhui University, Hefei 230601, China

Corresponding author: SHEN Yu-Hua,
Received Date: 28 July 2014
Available Online: 12 October 2014
Fund Project: 国家自然科学基金(No.21173001,21371003) (No.21173001,21371003)

The water soluble and nitrogen doped carbon quantum dots (N-CDs) with excellent fluorescence performance were fabricated by one step hydrothermal method. The size of N-CDs is homogeneous and about 7 nm. The fluorescent intensity of N-CDs changed with the content of N, reaction temperature and pHvalue. In the optimal condition, the fluorescence quantum yield of N-CDs reached 24.4%. The N-CDs was found to be a simple,lowcost, high selective and sensitive fluorescent probe for the detection of Hg²⁺ ions with a detection limit as low as 0.02 μmol·L^-1 (4.012 ng).
- N-doped carbon quantum dot;fluorescence performance;fluorescent probe;detection;mercury ion
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