| 121 | 0 | 420 |
| 下载次数 | 被引频次 | 阅读次数 |
以蔗糖为碳源，磷酸二氢铵为氮与磷源，通过一步水热法制备了一种耐酸型氮、磷掺杂碳量子点(ART-N,P-CQDs)作荧光探针，利用透射电镜(TEM)、傅里叶红外光谱(FT-IR)、纳米粒度分析仪、X-射线光电子能谱(XPS)、紫外分光光度计和荧光分光光度计对ART-N,P-CQDs的结构及其光学性质进行表征分析。结果显示，ART-N,P-CQDs为平均粒径1.7 nm的球形结构，其表面含有丰富的羟基、羧基、胺基、磷酸酯基等丰富的含氮、磷、氧的官能团，具有激发独立性的蓝色荧光，荧光量子产率为4.7%。鉴于Fe(Ⅲ)对ART-N,P-CQDs具有荧光猝灭效应，且为了准确检测Fe(Ⅲ),需将其置于酸性环境以防止三价铁水解。从而构建了一种能在酸性环境下检测微量Fe(Ⅲ)的新方法。该方法线性方程为F0/F=0.003 64C(Fe3+)+0.990 1(R2=0.994 2),检出限为1.49μmol/L,线性范围为10～100μmol/L,能量转移猝灭和静态猝灭过程是致使ART-N,P-CQDs荧光猝灭的原因。ART-N,P-CQDs在一定酸性环境、离子强度及干扰离子共存的条件下检测体系仍具有良好的荧光稳定性，将该方法应用于补铁药品中微量铁的测定，其加标回收率为94.59%～99.53%,结果令人满意。该方法操作简便，可用于市面上补铁药片中铁含量的检测，具有一定的应用前景。
Abstract：Using sucrose as carbon source and ammonium dihydrogen phosphate as nitrogen and phosphorus sources, acid-resistance type nitrogen and phosphorus doped carbon quantum dots(ART-N,P-CQDs) were synthesized by a one-step hydrothermal method and applied as fluorescent probes.The structure and optical properties of ART-N,P-CQDs were characterized by transmission electron microscopy(TEM),Fourier transform infrared spectroscopy(FT-IR),nanoparticle size analyzer, X-ray photoelectron spectroscopy(XPS),UV-visible absorption spectrum and fluorescence spectrophotometer.The results showed that ART-N,P-CQDs had a spherical structure with an average particle size of 1.7 nm, and their surfaces were rich in functional groups such as hydroxyl, carboxyl, amine, phosphate containing nitrogen, phosphorus and oxygen atoms.The quantum dots exhibits bright blue fluorescence with excitation independence and a fluorescence quantum yield of 4.7%.Considering the fluorescence quenching effect of Fe(Ⅲ) and the need for accurate detection in acidic environments to prevent hydrolysis, a new method was developed for detecting trace amounts of Fe(Ⅲ) under acidic conditions.The linear relationship was given by the equation: F0/F=0.003 64C(Fe3+)+0.990 1(R2=0.994 2),with a limit of detection of 1.49 μmol/L and a linear range of 10～100 μmol/L.The fluorescence quenching mechanism was attributed to energy transfer quenching and static quenching.The detection system maintained good fluorescence stability under acidic conditions, varying ionic strength, and coexistence of interfering ions.The method was successfully applied to the determination of trace iron in commercial iron supplementation, yielding spiked recoveries of 94.59% to 99.53% with satisfactory results.Owing to its operational simplicity and reliability, the proposed method demonstrates promising potential for iron quantification in commercially iron supplements.
[1]Zhang L,Li H D.Chem.Reagents,2023,45(8):94-103.张霖，李宏达.化学试剂，2023,45(8):94-103.
[2]Wang C,Li P,Ding J,Fang Y.Food Sci.Tech.Econ.,2021,46(4):89-95.王超，李彭，丁俭，方勇.粮食科技与经济，2021,46(4):89-95.
[3]Qu J W,Yang S Q,Chen S Y,Hu Y F.Chin.J.Anal.Lab.,2024,43(4):564-571.瞿金为，杨淑琼，陈盛余，胡月芳.分析试验室，2024,43(4):564-571.
[4]Zhang H N,Shan F J,Zhang A J,Chen Y Q.J.Liaoning Uni.Tech.(Nat.Sci.Ed.),2023,43(3):157-163.张慧楠，单凤君，张爱佳，陈玥琪.辽宁工业大学学报(自然科学版),2023,43(3):157-163.
[5]Zuo C Y,Li Q Q,Dai M Z,Fan C Y,Xu Y,Liu G Z,Wang S Y.Chin.J.Inorg.Chem.,2023,39(12):2 301-2 310.左从玉，李琴琴，代明珠，樊琛阳，徐叶，刘光泽，王思雨.无机化学学报，2023,39(12):2 301-2 310.
[6]Ma G S,Zhou M Z.Life Disaster,2020,(1):40-42.马冠生，周明珠.生命与灾害，2020,(1):40-42.
[7]Xing C X,Gu R R,Hu Y X,Lv Y L.Ind.Water Treat.,2023,43(12):162-166.星成霞，顾融融，胡远翔，吕雨龙.工业水处理，2023,43(12):162-166.
[8]Li L N,Su L Y,Jiao Y H,Shen H.Yunnan Geol.,2024,43(2):317-320.李玲娜，苏凌云，焦元海，申焕.云南地质，2024,43(2):317-320.
[9]Ali T A,Mahmoud W H,Mohamed G G.Appli.Organomet.Chem.,2019,33(11):e5 206.
[10]Li Y,Guo H T,Xue M H,Lu S K,Yao B X,Weng W.Chem.Reagents,2020,42(8):893-900.李䶮,郭汉涛，薛梅花，卢石孔，姚碧霞，翁文.化学试剂，2020,42(8):893-900.
[11]Niu J,Wang L Y,Yang E N,Zhang N,Hu P.Chem.Reagents,2020,42(3):221-225.牛静，王利瑶，杨恩暖，张宁，胡鹏.化学试剂，2020,42(3):221-225.
[12]Meng T H,Li C R,Zhao H B,Jiang Y P,Wang H,Yu Y S,Zhong T,Huang X L,Hu X Y.Chin.J.Anal.Lab.,2019,38(7):777-781.孟铁宏，李春荣，赵鸿宾，姜艳萍，王恒，余跃生，钟婷，黄晓玲，胡先运.分析试验室，2019,38(7):777-781.
[13]Zhu Z M,Yan D P,Huang Z H,Zhong X L,Shen Y.Chin.J.Anal.Lab.,2023,42(11):1 508-1 515.朱振茂，严大鹏，黄泽华，钟晓岚，沈赟.分析试验室，2023,42(11):1 508-1 515.
[14]Wang Z H,Zhang Y,Ren L X,Jia J.Chem.Res.App.,2023,35(11):2 561-2 567.王中惠，张漪，任列香，贾晶.化学研究与应用，2023,35(11):2 561-2 567.
[15]Wu X C,Liang W H,Cai C X.Prog.Chem.,2021,33(7):1 059-1 073.吴星辰，梁文慧，蔡称心.化学进展，2021,33(7):1 059-1 073.
[16]Yan L D,Hu Z S,Cheng J X,Zhu Y M,Zhao X F.Chin.J.Lum.,2023,44(12):2 265-2 276.闫立冬，胡朝帅，程俊霞，朱亚明，赵雪飞.发光学报，2023,44(12):2 265-2 276.
[17]Lin L L,Yin Y J,Li Z Y,Xu H J,Hessel V,Ostrikov K K.Chem.Eng.Res.Des.,2022,(178):395-404.
[18]Li Y Y,Shi H M,Feng S L.Chem.Res.Appl.,2021,33(12):2 399-2 404.李影影，时惠敏，冯素玲.化学研究与应用，2021,33(12):2 399-2 404.
[19]Li X Y,Wang C,Li P,Sun X Y,Shao Z Y,Xia J,Liu Q,Shen F,Fang Y.Food Chem.,2023,409:135 243.
[20]Zhao D H,Lv X,Peng W C,Li H H,Zhang J Z,Chen Z Y,Liu X J.Chin.J.Anal.Lab.,1-11[2025-04-06].赵丹华，吕枭，彭伟聪，李华辉，张荩之，陈作义，柳晓俊.分析试验室，1-11[2025-04-06].
[21]Hu R T,Hua H P,Liu F D,Xie R Y,Liu Q Q,Qiu Y X.Guangdong Chem.Ind.,2023,50(2):164-168;175.胡仁涛，华会萍，刘付达，谢睿洋，刘青青，邱燕璇.广东化工，2023,50(2):164-168;175.
[22]Song X L,Hu X P,Liu J,Liu L,Yu Y.Envir.Chem.,2019,38(3):522-530.宋兴良，胡雪萍，刘洁，刘利，于悦.环境化学，2019,38(3):522-530.
[23]Qian W,He L,Pan W S,Chen Y H,Wang H,Liu S L,Chen S J,Liu A P.Chin.J.Lum.,2021,42(11):1 818-1 827.钱玟，何利，潘无双，陈燕华，王惠，刘书亮，陈姝娟，刘爱平.发光学报，2021,42(11):1 818-1 827.
[24]Cheng F C,Zhang S,Zhang L,Sun J P,Wu Y Q.Colloid.Surf.A,2022,636:128 149.
[25]Gontrani L,Bauer E M,Nucara A,Tagliatesta P,Carbone M.Chemosensors,2022,10(9):362.
[26]Ding S,Gao Y,Ni B S,Yang X D.Inorg.Chem.Commun.,2021,130:108 636.
[27]Chin S F,Tan S C,Pang S C,Ng S M.Opt.Mater.,2017,73(11):77-82.
[28]Liu J L,Lan Y W,Peng Y Q,Tan Y F,Liang C F,Wang Y L,Liang X Y.J.Guangxi Uni.(Nat.Sci.Ed.),2020,45(4):876-882.刘锦玲，兰宇卫，彭义琴，谭言芳，梁春凤，王益林，梁信源.广西大学学报(自然科学版),2020,45(4):876-882.
基本信息:
DOI：10.13822/j.cnki.hxsj.2025.0080
中图分类号:O657.3;TQ460.72
引用信息:
[1]吴楚仪,吕枭,李华辉,等.ART-N,P-CQDs的制备及其对药品中Fe(Ⅲ)的荧光检测[J].化学试剂,2025,47(08):38-44.DOI:10.13822/j.cnki.hxsj.2025.0080.
基金信息:
广东第二师范学院污水处理与监测科研创新团队资助项目(2024 KYCXTD016); 大学生创新实验项目(202414278005); 广东省级本科质量工程教育教学改革项目(粤高教函[2021]29号-416); 广东省教育厅重点领域专项项目(2022ZDZX4037,2024ZDZX2087); 广州市基础与应用基础研究项目(202201011099)
2025-04-09
2025
2025-05-08
2025
1
2025-08-15
2025-08-15