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Surface modification of activated carbon fabric with ozone. Part 2: Thermal analysis with TGA-FTIR and DTA |
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| Authors: | Franco Cataldo Mihai V Putz Ornella Ursini Giancarlo Angelini |
| Affiliation: | 1. Actinium Chemical Research Institute, Via Casilina 1626A, Rome, Italy;2. Universita della Tuscia, Dipartimento di Scienze Ecologiche e Biologiche, Viterbo, Italy;3. Laboratory of Structural and Computational Physical-Chemistry for Nanosciences and QSAR, Biology-Chemistry Department, West University of Timisoara, Pestalozzi Street No. 44, Timisoara, RO, Romania;4. Laboratory of Renewable Energies-Photovoltaics, R&5. D National Institute for Electrochemistry and Condensed Matter, Dr. A. Paunescu Podeanu Str. No. 144, Timisoara, RO, Romania;6. Istituto di Metodologie Chimiche, CNR, Via Salaria Km 29,300, 00016 Monterotondo Stazione, Rome, Italy |
| Abstract: | Two samples of activated carbon fabrics (ACF) with very high surface area (>1300 to >1800 m2/g) fully ozonized in the part 1 of this study were analyzed by thermogravimetric analysis (TGA) coupled both with differential thermal analysis (DTA) and FT-IR spectroscopy (TGA-FTIR). The adsorbed water and the amount of oxygenated functional groups were determined. The ozonized ACF shows an exothermal decomposition at about 181–189°C which may be due at least in part to the decomposition of ozonide and/or peroxide groups. The TGA-FTIR has revealed that the main products released from the thermal decomposition are CO2 followed by CO. Formic acid was detected only in correspondence to the exothermal transition at 181°C and was taken as a proof of the decomposition of secondary ozonides. |
| Keywords: | activated carbon fabric ACF ozonization TGA-DTA TGA-FTIR |