高级氧化技术制备石油焦基碳量子点及其对Co^(2+) 的灵敏检测

Preparation of Carbon Quantum Dots by Advanced Oxidation Technologyand Their Sensitive Detection of Co^(2+)

以石油焦为碳源,通过高级氧化技术—超声微波Fenton法合成了碳量子点,其具有优异的光致发光性能。研究发现Co^(2+)对碳量子点荧光有良好的猝灭作用,从而建立了一种快速检测Co^(2+)的新方法。研究结果表明:在最优化的实验条件下,碳量子点荧光猝灭强度与Co^( 2+)浓度在0~1000μmol·L^(-1)范围内呈良好的线性关系,R^(2)=0.9937,检出限为0.33μmol·L^(-1)。

The petroleum coke was used as a carbon source to synthesize carbon quantum dots through advanced oxidation technology-ultrasonic microwave Fenton method,which has excellent photoluminescence properties.It has been proved that Co^(2+)has a good quenching effect on the fluorescence of carbon quantum dots,and a new method for rapid detection of Co^(2+)has been established.Under the optimized experimental conditions,the fluorescence quenching intensity of carbon quantum dots has a good linear relationship(R^(2)=0.9937)with the concentration of Co^(2+)in the range of 0~1000μmol·L^(-1),and the detection limit is 0.33μmol·L^(-1).