Ionic Liquid-Functionalized CQDs as Effective Signal-Off Fluorescence Nanoprobes for Selective and Sensitive Detection of Iron (III) and Chromium (VI)

doi:10.1002/slct.202102634

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	Ionic Liquid-Functionalized CQDs as Effective Signal-Off Fluorescence Nanoprobes for Selective and Sensitive Detection of Iron (III) and Chromium (VI)
	Wang, Wei 3; Zhang, Jian 3; Tian, Pei 3; Wang, Xiaojian 3; Qian, Wenzhen 1; Huang, Guowei 4; Liu, Xi 2; Liu, Baoyong 3
刊名	CHEMISTRYSELECT
	2021-10-20
卷号	6 期号:39 页码:10489-10500
关键词	Carbon quantum dots Chromium Fluorescent probes Iron Quenching
ISSN号	2365-6549
DOI	10.1002/slct.202102634
英文摘要	Ionic liquid-functionalized carbon quantum dots (ILCQDs) were directly synthesized by one-pot pyrolysis from citric acid and 1-aminopropyl-3-methyl imidazole bromide. ILCQDs emitting blue fluorescence and exhibiting photoluminescence quantum yield of 5.69 % were characterized by TEM, SAED, SEM, EDS, XRD, FTIR, XPS, UV-vis, fluorescence, zeta potential, TGA and (HNMR)-H-1. They were nanoparticles with high surface positive charges. Meanwhile, ILCQDs exhibited excitation-dependence, stability and superior water dispersibility. Due to static quenching and internal filtering effects, their fluorescence was effectively quenched by Fe3+ and Cr-VI. Consequently, they were exactly developed as effective signal-off fluorescent nanoprobes for selective and sensitive detection of Fe3+ and Cr-VI. ILCQDs-based fluorescent nanoprobes had wider linear ranges and the limits of detection for Fe3+ cation and Cr-VI anion reached as low as 11.38 mu M and 4.04 mu M, respectively. More importantly, ILCQDs were successfully applied to detection of Cr-VI in practical water samples and recoveries were 91.59 %-101.28 %, suggesting ILCQDs had promising application in environmental analysis.
WOS研究方向	Chemistry
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000709349600003
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150089]
专题	省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.Lanzhou Jiaotong Univ, Sch Environm & Municipal Engn, 88 Anning West Rd, Lanzhou 730070, Peoples R China; 2.Lanzhou Jiaotong Univ, Sch Mat Sci & Engn, 88 Anning West Rd, Lanzhou 730070, Peoples R China 3.Lanzhou Jiaotong Univ, Sch Chem & Chem Engn, 88 Anning West Rd, Lanzhou 730070, Peoples R China; 4.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, 287 Langongping Rd, Lanzhou 730050, Peoples R China;
推荐引用方式 GB/T 7714	Wang, Wei,Zhang, Jian,Tian, Pei,et al. Ionic Liquid-Functionalized CQDs as Effective Signal-Off Fluorescence Nanoprobes for Selective and Sensitive Detection of Iron (III) and Chromium (VI)[J]. CHEMISTRYSELECT,2021,6(39):10489-10500.
APA	Wang, Wei.,Zhang, Jian.,Tian, Pei.,Wang, Xiaojian.,Qian, Wenzhen.,...&Liu, Baoyong.(2021).Ionic Liquid-Functionalized CQDs as Effective Signal-Off Fluorescence Nanoprobes for Selective and Sensitive Detection of Iron (III) and Chromium (VI).CHEMISTRYSELECT,6(39),10489-10500.
MLA	Wang, Wei,et al."Ionic Liquid-Functionalized CQDs as Effective Signal-Off Fluorescence Nanoprobes for Selective and Sensitive Detection of Iron (III) and Chromium (VI)".CHEMISTRYSELECT 6.39(2021):10489-10500.