Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/81370
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dc.contributor.authorWong, YTen_US
dc.contributor.authorPang, SYen_US
dc.contributor.authorTsang, MKen_US
dc.contributor.authorLiu, Yen_US
dc.contributor.authorHuang, HTen_US
dc.contributor.authorYu, SFen_US
dc.contributor.authorHao, JHen_US
dc.date.accessioned2019-09-20T00:55:13Z-
dc.date.available2019-09-20T00:55:13Z-
dc.date.issued2019-
dc.identifier.citationNanoscale advances, 1 Jan. 2019, v. 1, no. 1, p. 265-272en_US
dc.identifier.urihttp://hdl.handle.net/10397/81370-
dc.description.abstractHeavy metal contamination in water can pose lethal threats to public health; therefore it is highly desired to develop a rapid and sensitive sensor for monitoring water quality. Owing to their superior optical features, upconversion nanoparticles (UCNPs) are widely explored to detect metal ions based on resonance energy transfer to dye quenchers. However, these schemes heavily rely on the optical properties of the molecules, which limits the flexibility of the probe design. Herein, a flexible carbon fiber cloth/UCNP composite probe was fabricated for sensing copper(II) (Cu2+) ions and an electrochemical (E-chem) technique was implemented for the first time to enhance its sensing performance. By applying 0.3 V on the composite probe, Cu2+ ions can be effectively accumulated through oxidation, yielding a remarkable improvement in the selectivity and sensitivity. A more outstanding detection limit of the sensor was achieved at 82 ppb under the E-chem assistance, with 300-fold enhancement compared to the detection without the E-chem effect. This sensing approach can be an alternative to molecular quenchers and open up new possibilities for simple, rapid and portable sensing of metal ions.en_US
dc.description.sponsorshipDepartment of Applied Physicsen_US
dc.language.isoenen_US
dc.publisherRoyal Society of Chemistryen_US
dc.relation.ispartofNanoscale advancesen_US
dc.rightsThis journal is © The Royal Society of Chemistry 2019en_US
dc.rightsThis article is licensed under a Creative Commons Attibution-NonCommercial 3.0 Unported Licence (https://creativecommons.org/licenses/by-nc/3.0/)en_US
dc.rightsThe following publication Wong, Y. T., Pang, S. Y., Tsang, M. K., Liu, Y., Huang, H. T., Yu, S. F., & Hao, J. H. (2019). Electrochemically assisted flexible lanthanide upconversion luminescence sensing of heavy metal contamination with high sensitivity and selectivity. Nanoscale Advances, 1(1), 265-272 is available at https://dx.doi.org/10.1039/c8na00012cen_US
dc.titleElectrochemically assisted flexible lanthanide upconversion luminescence sensing of heavy metal contamination with high sensitivity and selectivityen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage265en_US
dc.identifier.epage272en_US
dc.identifier.volume1en_US
dc.identifier.issue1en_US
dc.identifier.doi10.1039/c8na00012cen_US
dc.identifier.isiWOS:000479164600029-
dc.identifier.scopus2-s2.0-85072023959-
dc.identifier.eissn2516-0230en_US
dc.description.validate201909 bcrc-
dc.description.oapublished_final-
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