Preparation and characterization of F-, O-, and N-containing carbon nanoparticles for pH sensing
Lisnyak V.V. Zaderko A.N. Mariychuk R. Lysenko V. Boldyrieva O.Y. Skryshevsky V.A. Mussabek G. Taurbayev Y. Zhylkybayeva N. Tananiko O.Y.
March 2022Springer Science and Business Media Deutschland GmbH
Applied Nanoscience (Switzerland)
2022#12Issue 3795 - 803 pp.
A novel sensing system was designed for pH measurements based on the enhanced and quenched photoluminescence (PL) and UV–Vis absorption of the diluted water solutions of F-, O-, and N-containing carbon nanoparticles (FON-CNPs). These FON-CNPs were solvothermally synthesized, dissolved, ultra-filtrated, and separated by thin-layer chromatography. The total fluorine content in them was found to be 1.2–1.5 mmol per gram. Their TGA showed a total weight loss of 52.7% because of the thermal decomposition and detachment of the surface groups and the partial burning of the functionalized shell on the carbon core at temperatures below 1200 °C. TEM and Raman data confirmed the presence of graphitic structures in the carbon core. From the results of ATR FTIR and UV–Vis spectroscopies, we showed that a carbon shell incorporates different functional groups covering the carbon core. The surface groups of the carbon shell include carboxyl, phenolic, and carbonyl groups. Heterocyclic N-containing and amino groups and trifluoromethyl groups supporting the hydrophobicity were also found. We suggested the possible reasons for the pH responses obtained with the sensing system considering them dependent on the de-protonation of functional groups with pH change.
F-,O-, and N-containing carbon NPs , pH nanosensors , Photoluminescence , Solvothermal synthesis
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Faculty of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrs’ka Str., Kyiv, 01601, Ukraine
Department of Ecology, Faculty of Humanities and Natural Sciences, The University of Prešov in Prešov, 17th November Str. 1, Prešov, 08001, Slovakia
Institute of High Technologies, Taras Shevchenko National University of Kyiv, 64, Volodymyrs’ka Street, Kyiv, 01601, Ukraine
Light Matter Institute, UMR-5306, Claude Bernard University of Lyon, 2 rue Victor Grignard, Villeurbanne, 69622, France
Institute of Information and Computational Technologies, 125, Pushkin Str., Almaty, 050000, Kazakhstan
Faculty of Physics and Technology, Al-Farabi Kazakh National University, 71 Al-Farabi Ave., Almaty, 050040, Kazakhstan
Faculty of Chemistry
Department of Ecology
Institute of High Technologies
Light Matter Institute
Institute of Information and Computational Technologies
Faculty of Physics and Technology
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