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Graphene Oxide-terpyridine Conjugate: A Highly Selective Colorimetric and Sensitive Fluorescence Nano-chemosensor for Fe2+ in Aqueous Media
| Content Provider | Directory of Open Access Journals (DOAJ) |
|---|---|
| Author | Bagher Eftekhari-Sis Somayeh Mirdoraghi |
| Abstract | A graphene oxide-terpyridine conjugate (GOTC) based colorimetric and fluorescent nano-chemosensor was synthesized. It showed high selectivity and sensitivity for Fe2+ and Fe3+ ions in neutral aqueous solution over other metal ions such as Li+, Na+, Ba2+, Ca2+, Al3+, Cd2+, Co2+, Cu2+, Hg2+, Mn2+, Ni2+, Pb2+, Zn2+, Cr3+ and Ag+. In absorption spectra, upon addition of Fe2+ or Fe3+, the sensor displayed a peak at 568 nm, by changing the color of the solution from light pink for GOTC to light magenta and deep magenta for Fe3+ and Fe2+, respectively. Also, the fluorescence studies revealed that, Fe2+, Fe3+ and Co2+ quench the emission of GOTC at 473 nm, while other metal ions do not quench the fluorescence of GOTC in solution. Colorimetric and fluorescence techniques could be used for detection of Fe2+ ion concentration at least about 6-10 μM in water solution. The sensing on test paper was also investigated for the naked-eye detection of Fe2+. |
| Related Links | http://www.nanochemres.org/article_17542_34c1ef5ffeeccce356fa6383dc9ad2f4.pdf |
| ISSN | 25384279 |
| DOI | 10.7508/ncr.2016.02.008 |
| Journal | Nanochemistry Research |
| Issue Number | 2 |
| Volume Number | 1 |
| e-ISSN | 2423818X |
| Language | English |
| Publisher | Iranian Chemical Society |
| Publisher Date | 2016-01-01 |
| Publisher Place | Iran |
| Access Restriction | Open |
| Subject Keyword | Chemical Technology Chemistry Chemosensor Colorimetric Fe Fluorescence Graphene Oxide Nanosensor Terpyridine Chemical technology Technology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Materials Chemistry Condensed Matter Physics Materials Science Chemical Engineering |
