| ZnO-离子液体功能化的石墨烯量子点的制备及荧光性能 |
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| 引用本文： | 王欢,来鑫,赵维,陈佑宁,李玉红. ZnO-离子液体功能化的石墨烯量子点的制备及荧光性能[J]. 分子科学学报, 2020, 0(3): 228-234 |
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| 作者姓名： | 王欢 来鑫 赵维 陈佑宁 李玉红 |
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| 作者单位： | 咸阳师范学院化学与化工学院 |
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| 基金项目： | 国家自然科学基金资助项目(21703189);咸阳市科学技术研究项目(2018k02-20);2017年陕西省大学生创新创业训练计划项目(2502)。 |
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| 摘 要： | 利用水热法制备了ZnO-1-丙胺基-3-甲基咪唑氯离子液体功能化的石墨烯量子点溶液,通过紫外-可见吸收光谱、红外吸收光谱和透射电镜对其进行了表征.通过研究各种因素对ZnO-离子液体功能化的石墨烯量子点的荧光发射光谱的影响,发现Cr2O72-对ZnO-离子液体功能化的石墨烯量子点有荧光猝灭现象.实验结果表明,在优化的实验条件下,pH=5.0,Cr(Ⅵ)浓度为1.0×10-7～1.6×10-6 mol·L-1时,Cr(Ⅵ)对ZnO-离子液体功能化的石墨烯量子点的荧光猝灭呈线性,其线性方程为F/F0=0.969 5-0.008 4c,R=0.998 8,检出限为7.6×10-2μmol·L-1.
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| 关 键 词： | 石墨烯量子点 荧光猝灭 Cr(Ⅵ) |
Study on preparation and fluorescence property of graphene quantum dots functionalized with ZnO-ionic liquids |
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| WANG Huan,LAI Xin,ZHAO Wei,CHEN You-ning,LI Yu-hong. Study on preparation and fluorescence property of graphene quantum dots functionalized with ZnO-ionic liquids[J]. Journal of Molecular Science, 2020, 0(3): 228-234 |
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| Authors: | WANG Huan LAI Xin ZHAO Wei CHEN You-ning LI Yu-hong |
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| Affiliation: | (College of Chemistry and Chemical Engineering,Xianyang Normal University,Xianyang 712000,China) |
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| Abstract: | Graphene quantum dot functionalized with ZnO-1-propylamino-3-methylimidazole chloride ionic liquids was prepared by hydrothermal method and characterized by UV-Vis, FT-IR and TEM. The effect of various factors on the fluorescence emission spectra of ZnO-ionic liquids functionalized graphene quantum dots was studied. It was found that ZnO-ionic liquid functionalized graphene quantum dot would be fluorescence quenched in the present of Cr2O72-. Experimental results showed that the fluorescence quenching of ZnO-ionic liquid functionalized graphene quantum dot solution in the present of Cr6+ is linear over the range from 10.0 to 1.6 μmol·L-1 under pH=5.0, the linear equation F/F0=0.969 5-0.008 4c, R=0.998 8, with the detection limit of 7.6×10-2 μmol·L-1. |
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| Keywords: | graphene quantum dots fluorescence quenching hexavalent chromium |
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