A novel luminescent chemical sensor for the determination of Pb2+ and Cu2+ ions

Andrzej Marian Kłonkowski , Maja Orłowska , Jacek Ryl

Abstract

Silica xerogel surface grafted with aminopropyl (PrNH2) groups was additionally treated by cetyltrimethylammonium bromide (CTAB) surfactant and ascorbic acid (asc) in alkaline solution. This material symbolized as SiO2-PrNH2-CTAB/asc, proved to be a stable luminescent material, exhibited an emission band peaked at 393 nm under excitation wavelength 335 nm. Time evolution of the band intensity suggests changes of defect concentration on the silica surface owing to modification reaction with alkaline mixture of CTAB and asc. After this treatment the material could serve as a luminescence recognition element revealing selectively Cu2+ cations in presence of other metal ions in solutions. On the other hand, emission spectra excited by wavelength 236 nm confirmed selectively presence of Pb2+ and simultaneously Cu2+ cations in aqueous solutions. In this way the luminescent material could play the role of INHIBIT and YES logic gates for both the mentioned cations.
Author Andrzej Marian Kłonkowski WCh
Andrzej Marian Kłonkowski,,
- Faculty of Chemistry
, Maja Orłowska WCh
Maja Orłowska,,
- Faculty of Chemistry
, Jacek Ryl
Jacek Ryl,,
-
Journal seriesSensors and Actuators B - Chemical, ISSN 0925-4005
Issue year2017
Vol247
Pages296-304
Publication size in sheets0.5
Keywords in Englishluminescence recognition material, Pb2+, Cu2+, selectivity, logic gate
DOIDOI:10.1016/j.snb.2017.01.163
URL http://doi.org/10.1016/j.snb.2017.01.163
Languageen angielski
Score (nominal)40
ScoreMinisterial score = 40.0, 26-02-2018, ArticleFromJournal
Ministerial score (2013-2016) = 40.0, 26-02-2018, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 5.401 (2) - 2016=4.855 (5)
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