The Functionalization of Magnetic Fe3O4@TiO2 by Molecular Motif for the Detection of Mercury (II)
dc.contributor.advisor | Zenkina, Olena | |
dc.contributor.author | Egan, Jacquelyn G. | |
dc.date.accessioned | 2019-10-16T18:22:11Z | |
dc.date.accessioned | 2022-03-29T17:27:09Z | |
dc.date.available | 2019-10-16T18:22:11Z | |
dc.date.available | 2022-03-29T17:27:09Z | |
dc.date.issued | 2019-07-01 | |
dc.identifier.uri | https://hdl.handle.net/10155/1072 | |
dc.description.abstract | 2,6-bis(2-thienyl)pyridine (L) molecular receptor showed strong potential for Hg2+ detection. The chelation through S,N,S was confirmed as a main binding mode of the ligand with Hg2+ ion based on the results of 1H NMR. L showed a strong characteristic fluorescence signal at 413 nm in the absence of Hg2+; however, this signal was quenched when Hg2+ was introduced and a new fluorescence signal at 563 nm appeared. L was anchored into the surface of the coated magnetite microspheres (L-Fe3O4@TiO2) through a siloxane template layer and was fully characterized using thermogravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS). Detailed emission studies showed the ability of the L and L-Fe3O4@TiO2 not only effectively detect Hg2+ but differentiate it from competing Zn2+, Cd2+,Cu2+,Cr3+,Co2+,Ru3+, Fe2+ ions in solution with minimum interference. Magnetic micropsheres decorated by L showed promising performance as single –excitation -single emission sensor for Hg2+ ions and effective mercury uptake. | en |
dc.description.sponsorship | University of Ontario Institute of Technology | en |
dc.language.iso | en | en |
dc.subject | Mercury | en |
dc.subject | Magnetite | en |
dc.subject | Fluorscence | en |
dc.subject | Surface sensor | en |
dc.subject | Thiophene | en |
dc.title | The Functionalization of Magnetic Fe3O4@TiO2 by Molecular Motif for the Detection of Mercury (II) | en |
dc.type | Thesis | en |
dc.degree.level | Master of Science (MSc) | en |
dc.degree.discipline | Materials Science | en |
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