Pr/N co-doped biomass carbon dots with enhanced fluorescence for efficient detection of 2,4-dinitrophenylhydrazine  

Pr/N共掺杂生物质碳点增强荧光高效检测2,4-二硝基苯肼

作　　者：SUN Xuehua MA Min LIU Jianting TIAN Rui CHAI Hongmei CUI Huali GAO Loujun 孙雪花;马敏;刘键婷;田锐;柴红梅;崔华莉;高楼军(延安大学化学与化工学院,陕西省化学反应工程重点实验室,延安市绿色合成材料与化学安全检测重点实验室,延安716000)

机构地区：[1]Shaanxi Key Laboratory of Chemical Reaction Engineering,Key Laboratory of Green Synthetic Materials and Chemical Safety Testing,College of Chemistry and Chemical Engineering,Yan'an University,Yan'an,Shaanxi 716000,China

出　　处：《无机化学学报》2025年第3期561-573,共13页Chinese Journal of Inorganic Chemistry

基　　金：supported by the National Natural Science Foundation of China (Grant No.22063010);the Natural Science Foundation of Shaanxi Province (Grant No.2022QFY07-05);Yan'an Science and Technology Plan Project (Grants No.2022SLJBZ-002, 2023-CYL-193)。

摘　　要：We used the natural product chamomile as a carbon source to synthesize praseodymium(Pr) and nitrogen(N) co-doped biomass carbon dots(Pr/N-BCDs) with remarkable luminescence properties by one-step hydrothermal method.Compared with single N-doped BCDs(N-BCDs) and Pr-doped BCDs(Pr-BCDs),Pr/N-BCDs not only showed better fluorescence properties and stability but also achieved a significant increase in quantum yield of 12%.More importantly,under certain conditions,Pr/N-BCDs and 2,4-dinitrophenylhydrazide(2,4-DNPH) had significant fluorescence internal filtration effect(IFE) and dynamic quenching effect,and in the concentration range of0.50-20 μmol·L^(-1),the concentration of 2,4-DNPH had a good linear relationship with the fluorescence quenching signal,and the detection limit was as low as 2.1 nmol·L^(-1).采用一步水热法,利用天然产物洋甘菊为碳源,成功制备了镨(Pr)和氮(N)共掺杂生物质碳点(Pr/N-BCDs),其展现出优异的发光性能。与单N掺杂BCDs(N-BCDs)和Pr掺杂BCDs(Pr-BCDs)相比,Pr/N-BCDs不仅具有更强的荧光性能和稳定性,而且量子产率提高了12%。尤为重要的是,在一定条件下,Pr/N-BCDs与2,4-二硝基苯肼(2,4-DNPH)间存在显著的荧光内滤效应(IFE)和动态猝灭作用,且在0.50~20μmol·L^(-1)浓度范围内,2,4-DNPH浓度与体系荧光猝灭信号呈良好的线性关系,检出限低至2.1nmol·L^(-1)。

关 键 词：co⁃doped carbon dots 2 4⁃DNPH fluorescence detection 

分 类 号：O614.334[理学—无机化学] TB34[理学—化学]