摘要
以常见的柠檬酸作为碳源物质,采用微波法一步合成碳量子点。应用荧光法探索了微波合成荧光碳量子点条件,氢氧化钠的用量为0.4 mol/L、合成碳量子点的功率为455 W、微波时间为2 min,最终制得的碳量子点颜色呈棕黄色。荧光激发在371 nm、发射波长在456 nm,并且用傅立叶变换红外光谱对其结构进行表征。槲皮素对荧光碳点表现出选择性猝灭效果,基于荧光猝灭现象用于检测槲皮素,该方法对槲皮素测定的线性范围为6~100μmol/L,检出限为0.1μmol/L。
The citric acid was used as the common carbon source material, and the carbon quantum dots were synthesized by one - step microwave method. The conditions of microwave synthesis of fluorescent carbon quantum dots were investigated by fluorescence method. The amount of sodium hydroxide was 0.4mol/L, the microwave power of synthetic carbon quantum dots was 455 W, microwave time was 2 min, the final color of carbon quantum dot was brown. The fluorescence was excited at 371 nm and the emission wavelength was 456 nm, and its structure was char- acterized by Fourier transform infrared spectroscopy. Quercetin showed a selective quenching effect on the fluorescent carbon dots, fluorescence quenching effects was used to detect quercetin. The linear range of quercetin was 6 - 100 μmol / L and the detection limit was 0.1 μmol/L.
出处
《化工时刊》
CAS
2018年第1期5-8,共4页
Chemical Industry Times
基金
忻州师范学院大学生创新创业项目(2017)
山西省科技厅软科学研究计划(2017041015-2)
山西省自然科学基金(201601D102024
2011011007-1)
关键词
碳量子点
柠檬酸
微波法
槲皮素
carbon quantum dots citric acid microwave method quercetin
