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MoS2-Based Nanoprobes for Detection of Silver Ions in Aqueous Solutions and Bacteria
Yang Y.1; Liu T.2; Cheng L.2; Song G.2; Liu Z.2; Chen M.1
2015
Source PublicationACS Applied Materials and Interfaces
ISSN19448244
Volume7Issue:14Pages:7526
Abstract

Silver as an extensively used antibacterial agent also poses potential threats to the environment and human health. Hence, in this work, we design a fluorescent nanoprobe by using rhodamine B isothiocyanate (RhoBS) adsorbed MoS2 nanosheets to realize sensitive and selective detection of Ag+. On the surface of RhoBS-loaded MoS2 nanosheets, Ag+ can be reduced to Ag nanoparticles, which afterward could not only lead to the detachment of RhoBS molecules and thus their recovered fluorescence but also the surface-enhanced fluorescence from RhoBS remaining adsorbed on MoS2. Such an interesting mechanism allows highly sensitive detection of Ag+ (down to 10 nM) with great selectivity among other metal ions. Moreover, we further demonstrate that our MoS2-RhoBS complex could act as a nontoxic nanoprobe to detect Ag+ in live bacteria samples. Our work resulted from an unexpected finding and suggests the promise of two-dimensional transition-metal sulfide nanosheets as a novel platform for chemical and biological sensing. © 2015 American Chemical Society.

KeywordBacteria Detection Mos2 Nanosheets Selectivity Sensitivity
DOI10.1021/acsami.5b01222
URLView the original
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000353177000013
The Source to ArticleScopus
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被引频次[WOS]:44   [WOS记录]     [WOS相关记录]
Document TypeJournal article
专题Institute of Chinese Medical Sciences
Affiliation1.State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Taipa, Macau, China
2.Institute of Functional Nano & Soft Materials Laboratory (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, China
First Author AffilicationInstitute of Chinese Medical Sciences
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Yang Y.,Liu T.,Cheng L.,et al. MoS2-Based Nanoprobes for Detection of Silver Ions in Aqueous Solutions and Bacteria[J]. ACS Applied Materials and Interfaces,2015,7(14):7526.
APA Yang Y.,Liu T.,Cheng L.,Song G.,Liu Z.,&Chen M..(2015).MoS2-Based Nanoprobes for Detection of Silver Ions in Aqueous Solutions and Bacteria.ACS Applied Materials and Interfaces,7(14),7526.
MLA Yang Y.,et al."MoS2-Based Nanoprobes for Detection of Silver Ions in Aqueous Solutions and Bacteria".ACS Applied Materials and Interfaces 7.14(2015):7526.
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