摘要
Using simple and eco-friendly ethanol solvothermal treatment,dual-emission biomass carbon quantum dots(D-BCQDs)were synthesized from biomass viburnum awabuki leaves.Under excitation with 413 nm wavelength light two emission peaks appeared at 490 and 675 nm and the dots could be tuned to emit crimson,red,purplish red,purple and blue-gray fluorescence by changing the solvothermal temperature from 140℃ to 160,180,200 and 240℃,respectively.XPS and FTIR characterization in-dicated that the fluorescence color was mainly determined by surface oxidation defects,elemental nitrogen and sp^(2)-C/sp^(3)-C hybrid-ized structural domains.The D-BCQDs could not only detect Fe^(3+)or Cu^(2+),but also quantify the concentration ratio of Fe^(3+)to Cu^(2+)in a solution containing both,demonstrating their potential applications in the simultaneous detection of Fe^(3+)and Cu^(2+)ions.
利用简单、环保的溶剂热处法,从生物质珊瑚叶为原料合成了双发射生物质碳量子点(D-BCQDs)。在单一的413 nm激发波长下,分别在490和675 nm处出现了双发射峰。仅通过改变反应温度(140~240℃),多色D-BCQDs能分别发出深红色、红色、紫红色、紫色和蓝灰色荧光。XPS和FT IR结果表明,荧光颜色可调机制主要归因于表面氧化缺陷、氮元素含量和sp^(2)-C/sp^(3)-C杂化结构域。D-BCQDs不仅能分别检测Fe^(3+)和Cu^(2+),还能量化混合溶液中Fe^(3+)和Cu^(2+)的比例,证明了其在同时检测多种离子方面的应用潜力。
出处
《新型炭材料（中英文）》
SCIE
EI
CAS
CSCD
北大核心
2024年第6期1213-1226,共14页
New Carbon Materials
基金
国家自然科学基金(52090033,52090030).
作者简介
薛佳佳,硕士研究生.E-mail:xuejiajia654321@163.com;通讯作者:吴琪琳,教授.E-mail:wql@dhu.edu.cn。
