Rapid sensing of lead metal ions in an aqueous medium by MoS2 quantum dots fluorescence turn-off

被引：74

作者：

Sharma, Prateek ^{[1
]}

Mehata, Mohan Singh ^{[1
]}

机构：

[1] Delhi Technol Univ, Dept Appl Phys, Laser Spect Lab, Bawana Rd, Delhi 110042, India

来源：

MATERIALS RESEARCH BULLETIN | 2020年 / 131卷

关键词：

Transition metal dichalcogenides; MoS2; QDs; Surface functionalization; Heavy metal-ion sensor; Fluorescence turn-off process; RESONANCE ENERGY-TRANSFER; PHOTOLUMINESCENCE; PROBES; SENSOR; PEROXYNITRITE; COMPOSITES; GRAPHENE; PLATFORM; DEVICES; FACILE;

D O I：

10.1016/j.materresbull.2020.110978

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The traditional methods used for the detection of heavy metal ions in an aqueous medium have been considered as complicated and time-consuming; therefore, it is highly recommended to find a rapid and sensitive probe. The functionalized molybdenum disulfide (MoS2) quantum dots (QDs) were developed and used as a sensitive fluorescent probe for monitoring the lead (Pb2+) ions in an aqueous medium. Photoluminescence (PL)/fluorescence intensity of the QDs strongly quenched in the presence of Pb2+ ions. The responsiveness of PL of QDs with Pb2+ in the range of 33 mu M to 8.0 mM makes it a wide dynamic range sensing probe with a limit of detection (LOD) of 50 mu M. Besides, the linear dependence of an absolute absorption intensity with the concentration of Pb2+ ions makes it a significant probe for monitoring the lead metal ions in an aqueous environment.

引用

页数：8

共 56 条

[51] Hydrothermal synthesis and photoluminescent mechanistic investigation of highly fluorescent nitrogen doped carbon dots from amino acids [J].

Yang, Juan ;

Chen, Weilong ;

Liu, Xueping ;

Zhang, Yao ;

Bai, Yan .

MATERIALS RESEARCH BULLETIN, 2017, 89 :26-32

[52] Ultrasensitive and selective sensing of heavy metal ions with modified graphene [J].

Yu, Chunmeng ;

Guo, Yunlong ;

Liu, Hongtao ;

Yan, Ni ;

Xu, Zhiyan ;

Yu, Gui ;

Fang, Yu ;

Liu, Yunqi .

CHEMICAL COMMUNICATIONS, 2013, 49 (58) :6492-6494

[53] Reversible Near-Infrared Fluorescent Probe Introducing Tellurium to Mimetic Glutathione Peroxidase for Monitoring the Redox Cycles between Peroxynitrite and Glutathione in Vivo [J].

Yu, Fabiao ;

Li, Peng ;

Wang, Bingshuai ;

Han, Keli .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2013, 135 (20) :7674-7680

[54] A Near-IR Reversible Fluorescent Probe Modulated by Selenium for Monitoring Peroxynitrite and Imaging in Living Cells [J].

Yu, Fabiao ;

Li, Peng ;

Li, Guangyue ;

Zhao, Guangjiu ;

Chu, Tianshu ;

Han, Keli .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (29) :11030-11033

[55] Solution-Processed Two-Dimensional MoS2 Nanosheets: Preparation, Hybridization, and Applications [J].

Zhang, Xiao ;

Lai, Zhuangchai ;

Tan, Chaoliang ;

Zhang, Hua .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2016, 55 (31) :8816-8838

[56] Single-Layer MoS2-Based Nanoprobes for Homogeneous Detection of Biomolecules [J].

Zhu, Changfeng ;

Zeng, Zhiyuan ;

Li, Hai ;

Li, Fan ;

Fan, Chunhai ;

Zhang, Hua .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2013, 135 (16) :5998-6001

← 1 2 3 4 5 6 →