A new fluorescence probe comprising nitrogen-doped graphene quantum dots for the selective and quantitative determination of cerium(iv)

doi:10.1039/c9nj04518j

GIEC OpenIR

	A new fluorescence probe comprising nitrogen-doped graphene quantum dots for the selective and quantitative determination of cerium(iv)
	Chu, Xu 1; Wang, Shengnan 1; Cao, Yan 1,2
	2020-01-21
Source Publication	NEW JOURNAL OF CHEMISTRY
ISSN	1144-0546
Volume	44 Issue:3 Pages:797-806
Corresponding Author	Cao, Yan(caoyan@ms.giec.ac.cn)
Abstract	Graphene quantum dots (GQDs) have been widely applied in the fields of photocatalysis, bioimaging, drug delivery, metal ion detection and up-conversion photoluminescence, etc. This work introduces N-doped graphene quantum dots (N-GQDs), prepared via a one-step green wet chemical method using graphene oxide (GO) as a raw material, followed by dialysis, to create a new fluorescence sensor for rare earth elements (REEs). The obtained N-GQDs with rich oxygen functional groups showed a strong blue emission which was almost unaffected by extreme pH conditions. Due to the selective coordination to Ce4+ over other REEs, the N-GQDs can be used as a sensitive and selective chemo-sensor of Ce4+ ions in aqueous solution. The concentration range and the detection limit of the N-GQDs fluorescence probe were 1-44 mu M and 0.8352 mu M for Ce4+, respectively. The possible quenching mechanism was also explored via material characterization tools, such as FTIR, XPS, UV-vis and DLS analysis. The interference from other REEs was negligible during the quantitative determination of Ce4+. This method proved to be simple, sensitive, low cost, and also reliable for practical applications.
DOI	10.1039/c9nj04518j
WOS Keyword	CARBON DOTS ; RARE-EARTH ; SENSITIVE DETECTION ; ION ; PHOTOLUMINESCENCE ; ELEMENTS ; SAMPLES ; SENSOR ; CE4+
Indexed By	SCI
Language	英语
Funding Project	National Natural Science Foundation of China[21676001] ; National Key R&D Program of China[2017YFE0105500]
WOS Research Area	Chemistry
Funding Organization	National Natural Science Foundation of China ; National Key R&D Program of China
WOS Subject	Chemistry, Multidisciplinary
WOS ID	WOS:000509327200018
Publisher	ROYAL SOC CHEMISTRY
Citation statistics	Cited Times:19[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.giec.ac.cn/handle/344007/26421
Collection	中国科学院广州能源研究所
Corresponding Author	Cao, Yan
Affiliation	1.Anhui Univ, Coll Chem & Chem Engn, Hefei 230601, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
Recommended Citation GB/T 7714	Chu, Xu,Wang, Shengnan,Cao, Yan. A new fluorescence probe comprising nitrogen-doped graphene quantum dots for the selective and quantitative determination of cerium(iv)[J]. NEW JOURNAL OF CHEMISTRY,2020,44(3):797-806.
APA	Chu, Xu,Wang, Shengnan,&Cao, Yan.(2020).A new fluorescence probe comprising nitrogen-doped graphene quantum dots for the selective and quantitative determination of cerium(iv).NEW JOURNAL OF CHEMISTRY,44(3),797-806.
MLA	Chu, Xu,et al."A new fluorescence probe comprising nitrogen-doped graphene quantum dots for the selective and quantitative determination of cerium(iv)".NEW JOURNAL OF CHEMISTRY 44.3(2020):797-806.

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