1. Preparation and characterization of F-, O-, and N-containing carbon nanoparticles for pH sensing
- Author
-
Nazym Zhylkybayeva, Vladyslav V. Lisnyak, Valeriy A. Skryshevsky, Yerzhan T. Taurbayev, Volodymyr Lysenko, G.K. Mussabek, Ruslan Mariychuk, Oksana Yu. Tananiko, Alexander N. Zaderko, Olga Yu. Boldyrieva, Taras Shevchenko National University of Kyiv, University of Prešov, Institute of High Technologies [Kyiv], Formation, élaboration de nanomatériaux et cristaux (FENNEC), Institut Lumière Matière [Villeurbanne] (ILM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Institute of Information and Computational Technologies (IICT), and Al-Farabi Kazakh National University [Almaty] (KazNU)
- Subjects
and N-containing carbon NPs ,O ,Materials Science (miscellaneous) ,Solvothermal synthesis ,chemistry.chemical_element ,Nanochemistry ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,chemistry.chemical_compound ,symbols.namesake ,[SPI]Engineering Sciences [physics] ,pH nanosensors ,[CHIM]Chemical Sciences ,Electrical and Electronic Engineering ,Physical and Theoretical Chemistry ,Fourier transform infrared spectroscopy ,Photoluminescence ,ComputingMilieux_MISCELLANEOUS ,[PHYS]Physics [physics] ,Trifluoromethyl ,Thermal decomposition ,Cell Biology ,[CHIM.MATE]Chemical Sciences/Material chemistry ,021001 nanoscience & nanotechnology ,Atomic and Molecular Physics, and Optics ,0104 chemical sciences ,chemistry ,13. Climate action ,F ,symbols ,Fluorine ,[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] ,0210 nano-technology ,Raman spectroscopy ,Carbon ,Biotechnology ,Nuclear chemistry - Abstract
International audience; 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.
- Published
- 2021
- Full Text
- View/download PDF