Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Hsu, Shu-Kang | en_US |
dc.contributor.author | Chang, Zhao-Jun | en_US |
dc.contributor.author | Chang, Sue-Min | en_US |
dc.date.accessioned | 2018-08-21T05:53:11Z | - |
dc.date.available | 2018-08-21T05:53:11Z | - |
dc.date.issued | 2018-01-01 | en_US |
dc.identifier.issn | 0003-2719 | en_US |
dc.identifier.uri | http://dx.doi.org/10.1080/00032719.2017.1338715 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/144365 | - |
dc.description.abstract | In situ detection of Cu2+ ions in the effluent from thin-film transistor-liquid crystal display (TFT-LCD) manufacturing facility has been successfully achieved using thiol-capped CdS/ZnS quantum dots (QDs) as the fluorescence probes. Three types of ligands, including L-cysteine (LC), mercaptosuccinic acid (MSA), and thioglycolic acid (TGA), were used as capping agents for stabilizing and functionalizing the QDs. Fluorescence quenching of the QDs by Cu2+ ions was well fitted by the Stern-Volmer equation, indicating a static quenching process. Interaction between the Cu2+ ions and the thiol-based capping agents to form Cu-S bonding was responsible for the nonradiative decay. The thiol-capped probes exhibited low detection limits (0.016-0.063mgL(-1)), high recovery (81.7-114.5%), good precision (relative standard deviation=0.36-4.56%), and suitable accuracy for the detection of Cu2+ ions in the field samples, even though those that contained Ca2+, Mg2 +, Na+, K+, and ions, which were 300-16,600 times higher in concentration than the target. These results clearly verify the feasibility of using the QDs as an early warning system for assisting TFT-LCD manufacturing facilities in compliance with strict effluent standards (0.15mgL(-1)). Among the three types of thiol-capped QDs, the TGA-capped probes were the most sensitive and the LC-capped probes exhibited the highest errors. Substantial loading of the small TGA ligands on the surface and competitive complexation of the amino groups with Cu2+ ions are responsible for the benefits and the consequences of the TGA- and LC-capped QDs for Cu2+ sensing, respectively. | en_US |
dc.language.iso | en_US | en_US |
dc.subject | Fourier transform infrared (FTIR) spectroscopy | en_US |
dc.subject | inductively coupled plasma-optical emission spectrometry (ICP-OES) | en_US |
dc.subject | L-cysteine (LC) | en_US |
dc.subject | mercaptosuccinic acid (MSA) | en_US |
dc.subject | quantum dots (QDs) | en_US |
dc.subject | thin-film transistor-liquid crystal display (TFT-LCD) | en_US |
dc.subject | thioglycolic acid (TGA) | en_US |
dc.subject | transmission electron microscopy (TEM) | en_US |
dc.title | Fluorescent Determination of Copper(II) in Industrial Wastewater Using Thiol-Capped Cadmium Sulfide-Zinc Sulfide Quantum Dots as the Probe | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1080/00032719.2017.1338715 | en_US |
dc.identifier.journal | ANALYTICAL LETTERS | en_US |
dc.citation.volume | 51 | en_US |
dc.citation.spage | 547 | en_US |
dc.citation.epage | 563 | en_US |
dc.contributor.department | 環境工程研究所 | zh_TW |
dc.contributor.department | Institute of Environmental Engineering | en_US |
dc.identifier.wosnumber | WOS:000419943600008 | en_US |
Appears in Collections: | Articles |