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

文献类型：期刊论文

作者Cao, Haiyan1; Wang, Huanbo1; Huang, Yu1; Sun, Yufeng1,2; Shi, Si3; Tang, Mingjie1
刊名MICROCHIMICA ACTA
出版日期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
DOI10.1007/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
WOS记录号WOS:000389353900007
出版者SPRINGER WIEN
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.

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来源：重庆绿色智能技术研究院

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