厦门大学学报（自然科学版）2017，Vol.56Issue(5)：626-632,7.DOI:10.6043/j.issn.0438-0479.201701025
碳量子点荧光探针识别与测定水溶液中的Cr(Ⅵ)
Recognition and Detection of Cr(Ⅵ)in Aqueous Solutions Using Carbon Dots as Fluorescence Probe
摘要
Abstract
The carbon dots (CDs)were prepared by hydrothermal method with citric acid and ethylene diamine as the raw materials. The prepared CDs were characterized by transmission electron microscopy (TEM),Fourier transformation infrared (FT-IR)spec-troscopy,Raman spectroscopy,UV-Visible (UV-Vis)absorption spectroscopy and fluorescence spectroscopy to obtain their mor-phology,chemical composition,functional groups and fluorescence.The effect of Cr(Ⅵ)anions on the fluorescence of CDs was ex-plored.Results showed that the addition of Cr(Ⅵ)caused changes in intensity and position of UV absorption peak characteristic of CDs and quenched the fluorescence of CDs;as Cr(Ⅵ)concentration increased,the quenching ratio of fluorescence of CDs increased linearly.Accordingly,the recognition and detection method of Cr(Ⅵ)based on CDs as the fluorescence probe has thus been estab-lished,which lays the foundation for developing a quick and sensitive detection technique of Cr(Ⅵ)in water.关键词
碳量子点/荧光/Cr(Ⅵ)/识别/测定Key words
carbon dots/fluorescence/Cr(Ⅵ)/recognition/detection分类
化学化工引用本文复制引用
李冬,杨阳,贾佳琦,谢兵,周景海,李鸿乂..碳量子点荧光探针识别与测定水溶液中的Cr(Ⅵ)[J].厦门大学学报（自然科学版）,2017,56(5):626-632,7.基金项目
国家重点基础研究发展计划(973 计划)(2013CB632604) （973 计划）
国家自然科学基金(51474041,51674051) （51474041,51674051）
国家科技支撑计划项目(2015BAB19B02) （2015BAB19B02）
中央高校基本科研业务费专项(106112016CDJZR135505) （106112016CDJZR135505）
