Ionic liquid-functionalized carbon quantum dots as fluorescent probes for sensitive and selective detection of iron ion and ascorbic acid | |
Department | 固体润滑国家重点实验室 |
Xie, Zengchun1; Sun, Xiaofeng2; Jiao, Jianmei1; Xin, Xia1,2 | |
2017 | |
Source Publication | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
ISSN | 0927-7757 |
Volume | 529Pages:38-44 |
Abstract | Herein, a convenient on-off fluorescent probe was developed to detect iron ion (Fe3+) with sensitivity and selectivity by using highly luminescent ionic liquid-functionalized carbon quantum dots (CQDs) which was prepared by one-step hydrothermal treatment using citric acid and 1-Aminopropyl-3-methylimidazolium. The sensitivity of CQDs for Fe3+ was examined by measuring the fluorescence (FL) intensity of various concentrations of Fe3+ in CQDs solution and the selectivity of CQDs for Fe3+ was examined by adding different metal ions (Na+, Mg2+, Al3+, K+, Ca2+, Mn2+, Zn2+, Ag+, Cd2+, Pb2+ and Ba2+) into CQDs solution, respectively. The results indicated that the FL intensity of CQDs showed a good linear response to the concentrations of Fe3+ in the range of 0-300 μmol L-1 (R-2 = 0.99) with a detection limit of 13.68 μmol L-1. Furthermore, based on the redox mechanism, after the fluorescent of CQDs was quenched by Fe3+, different neurotransmitters and amino acids were added and the FL test show that only ascorbic acid (AA) can recover the intensity of the CQDs/Fe3+, indicating that CQDs/Fe3+ can be further used as a on-off fluorescent probe for the detection of AA. It is expected that our strategy may offer a new approach for developing rapid, low cost and sensitive CQDs-based sensors for environmetal and biological sensing applications. |
Keyword | Carbon Quantum Dots Ionic Liquid On-off Probe Iron Ion Ascorbic Acid |
Subject Area | 材料科学与物理化学 |
DOI | 10.1016/j.colsurfa.2017.05.069 |
Funding Organization | the National Natural Science Foundation of China (21203109);Ji’nan Youth Science and Technology Star Program (2013040) |
Indexed By | SCI |
If | 2.714 |
Language | 英语 |
compositor | 第二作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/22431 |
Collection | 固体润滑国家重点实验室(LSL) |
Affiliation | 1.Shandong Univ, Natl Engn Technol Res Ctr Colloidal Mat, Jinan 250100, Shandong, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China |
Recommended Citation GB/T 7714 | Xie, Zengchun,Sun, Xiaofeng,Jiao, Jianmei,et al. Ionic liquid-functionalized carbon quantum dots as fluorescent probes for sensitive and selective detection of iron ion and ascorbic acid[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects,2017,529:38-44. |
APA | Xie, Zengchun,Sun, Xiaofeng,Jiao, Jianmei,&Xin, Xia.(2017).Ionic liquid-functionalized carbon quantum dots as fluorescent probes for sensitive and selective detection of iron ion and ascorbic acid.Colloids and Surfaces A: Physicochemical and Engineering Aspects,529,38-44. |
MLA | Xie, Zengchun,et al."Ionic liquid-functionalized carbon quantum dots as fluorescent probes for sensitive and selective detection of iron ion and ascorbic acid".Colloids and Surfaces A: Physicochemical and Engineering Aspects 529(2017):38-44. |
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