Quantification of gold(III) in solution and with a test stripe via the quenching of the fluorescence of molybdenum disulfide quantum dots

doi:10.1007/s00604-016-1988-z

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 太赫兹技术研究中心

	Quantification of gold(III) in solution and with a test stripe via the quenching of the fluorescence of molybdenum disulfide quantum dots
	Cao, Haiyan 1; Wang, Huanbo 1; Huang, Yu1 ; Sun, Yufeng 1,2; Shi, Si 3; Tang, Mingjie1
刊名	MICROCHIMICA ACTA
	2017
卷号	184 期号:1 页码:91-100
关键词	Nanomaterial Glutathione Gold(III) ions Dynamic light scattering HRTEM XPS FTIR Quantum yield Contour map Test stripe
ISSN号	0026-3672
DOI	10.1007/s00604-016-1988-z
通讯作者	Cao, HY ; Huang, Y (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China.
英文摘要	The paper describes a fluorescent method for determination of Au(III) using molybdenum disulfide quantum dots (MoS2 QDs) that were prepared by a hydrothermal route using glutathione as a reductant. The photoluminescence of MoS2 QDs peaks at 416 nm if excited at 340 nm and is temporally stable even in presence of NaCl or when stored in the refrigerator for one year. Its quantum yield is 12.7 %. The blue-green fluorescence of MoS2 QDs is fairly specifically quenched by Au(III) ions and therefore presents a useful nanoprobe for this ion. Fluorescence intensity drops linearly with the concentration of Au(III) in the range from 0.5 to 1000 mu M, and the lower detection limit is 64 nM. The quenching mechanism was investigated and it is concluded that the process is due to the reduction of Au(III) and the deposition of Au(0) on the surface of the MoS2 QDs. The nanoprobe was successfully applied to the determination of Au(III) in (spiked) environmental samples. A test stripe for Au(III) was obtained by soaking a piece of paper with a colloidal solution of the MoS2 QDs, and it was found that this stripe, after drying, can also be used to quantify Au(III) via fluorescence.
资助项目	National Natural Science Foundation of China[61307103] ; fundamental & advanced research project of Chongqing, China[cstc2013jcyjC00001] ; STS Project of Chinese Academy of Sciences[KFJ-EW-STS-011] ; Ministry of Education. National Natural Science Foundation of China[21407145]
WOS研究方向	Chemistry
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000389353900007
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/3168]
专题	太赫兹技术研究中心大气环境研究中心
通讯作者	Cao, Haiyan; Huang, Yu
作者单位	1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 2.Jilin Univ, Coll Instrumentat & Elect Engn, Changchun 130000, Peoples R China 3.Occupat Dis Prevent Hosp Chongqing City, Chongqing 400060, Peoples R China
推荐引用方式 GB/T 7714	Cao, Haiyan,Wang, Huanbo,Huang, Yu,et al. Quantification of gold(III) in solution and with a test stripe via the quenching of the fluorescence of molybdenum disulfide quantum dots[J]. MICROCHIMICA ACTA,2017,184(1):91-100.
APA	Cao, Haiyan,Wang, Huanbo,Huang, Yu,Sun, Yufeng,Shi, Si,&Tang, Mingjie.(2017).Quantification of gold(III) in solution and with a test stripe via the quenching of the fluorescence of molybdenum disulfide quantum dots.MICROCHIMICA ACTA,184(1),91-100.
MLA	Cao, Haiyan,et al."Quantification of gold(III) in solution and with a test stripe via the quenching of the fluorescence of molybdenum disulfide quantum dots".MICROCHIMICA ACTA 184.1(2017):91-100.