Citation: KANG Qian-Wen, ZHANG Guo, CHAI Rui-Tao, ZHU Wei-Huang, FENG Jian-Jun, CHEN Li-Jun. Synthesis of Carbon Nanodots for Detection of Aluminum Ion with Fluorescence Enhancement[J]. Chinese Journal of Analytical Chemistry, ;2019, 47(12): 1901-1908. doi: 10.19756/j.issn.0253-3820.191538 shu

Synthesis of Carbon Nanodots for Detection of Aluminum Ion with Fluorescence Enhancement

1.
School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;
2.
School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China

Received Date: 5 September 2019
Revised Date: 27 September 2019

Fund Project: This work was supported by the National Natural Science Foundation of China (No. 21205092), the Natural Science Foundation of Shaaxi Province (No. 2018JQ2053), the Natural Science Foundation of Xi'an University of Architecture and Technology (No. ZR18039) and the Talent Foundation of Xi'an University of Architecture and Technology (No. RC1306).

Water-soluble green fluorescent carbon nanodots (CDs) were synthesized by one-step hydrothermal method with ascorbic acid (AA) as carbon source. The morphology and properties of CDs were characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Fourier Transform Infra-Red (FTIR), ultraviolet-visible (UV-vis) spectroscopy and fluorescence spectroscopy. Based on the fluorescence enhancement phenomenon generated by the combination of CD and aluminum ions (Al³⁺), a fluorescence analysis method was established to detect Al³⁺ with a linear range of 50-500 nmol/L (R²=0.9988) and 500-2000 nmol/L (R²=0.9976), respectively. The limit of detection (LODs) was 10.23 nmol/L (S/N=3). Moreover, this method was successfully applied in detection of Al³⁺ in bottled drinking water samples with recoveries of 97.7%-105.7%.
- Carbon nanodots,
- Ascorbic acid,
- Fluorescence enhancement,
- Aluminum ion,
- Detection
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