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dc.contributor.authorSung, Yi-Mingen_US
dc.contributor.authorWu, Shu-Paoen_US
dc.date.accessioned2014-12-08T15:36:28Z-
dc.date.available2014-12-08T15:36:28Z-
dc.date.issued2014-10-01en_US
dc.identifier.issn0925-4005en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.snb.2014.04.069en_US
dc.identifier.urihttp://hdl.handle.net/11536/24808-
dc.description.abstractA sensitive and selective colorimetric Cd2+ detection method was developed using di-(1H-pyrrol-2-yl)methanethione functionalized gold nanoparticles (DP-AuNPs). Aggregation of DP-AuNPs was induced immediately in the presence of Cd2+, yielding a color change from red to blue. This Cd2+-induced aggregation of DP-AuNPs was monitored using the naked eye and UV-vis spectroscopy. The SPR absorbance( 635 nm) of the reaction between DP-AuNPs and Cd2+ shows a good linearity in the Cd2+ concentration range of 0.5-16 mu M and a low detection limit 16.6 nM (S/N = 3). The DP-AuNPs showed excellent selectivity toward Cd2+ compared to other metal ions Ag+, Al3+, Ca2+, Cd2+, Co2+, Cr3+, Cu2+, Fe2+, Fe3+, Hg2+, Mg2+, Mn2+, Ni2+, Pb2+, and Zn2+. Optimal detection of Cd2+ was achieved over a pH range from 4 to 9.5. Furthermore, DP-AuNPs were applied to detect Cd2+ in lake water, showing low interference. (C) 2014 Elsevier B.V. All rights reserved.en_US
dc.language.isoen_USen_US
dc.subjectColorimetric sensoren_US
dc.subjectCd(II)en_US
dc.subjectGold nanoparticlesen_US
dc.subjectDi-(1H-pyrrol-2-yl)methanethioneen_US
dc.titleColorimetric detection of Cd(II) ions based on di-(1H-pyrrol-2-yl)methanethione functionalized gold nanoparticlesen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.snb.2014.04.069en_US
dc.identifier.journalSENSORS AND ACTUATORS B-CHEMICALen_US
dc.citation.volume201en_US
dc.citation.issueen_US
dc.citation.spage86en_US
dc.citation.epage91en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
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