Modification of carbon black by thermal treatment in air atmosphere

• Published in: Journal of physics. Conference series Vol. 1492; no. 1; pp. 12063 - 12067
• Main Authors: Milenov, T, Avramova, I, Avdeev, G, Mladenoff, J, Pishinkov, D, Genkov, K, Zyapkov, A, Russev, S, Nikolov, A, Stankova, N, Velikova, R, Kolev, S, Valcheva, E
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.04.2020
• Subjects: Acetone; Annealing; Carbon; Carbon black; Heat treatment; Nanocrystals; Photoelectrons; Physics; Raman spectroscopy; Spectrum analysis; X ray photoelectron spectroscopy; X ray powder diffraction; X-ray diffraction
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/1492/1/012063

We modified carbon black (CB) with a large surface area (ENSACO 350 GRANULAR) by acetone and further thermal treatment. The pristine and the modified CB were characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-ray powder diffraction (XRD) and Raman spectroscopy. The acetone treatment increases the content of oxygen-containing radicals in CB. The thermal annealing was performed at temperatures ranging from 250 °C to 1080 °C for three hours in air atmosphere. The powder XRD patterns revealed that the broad complex peak centered at about 2θ = 24.7 - 24.8°, which arises from graphitic-ordered sp2-hybridized carbon, shifts to its usual position at 2θ = 26.2° as the annealing temperature is increased. We concluded that the above results pointed to a relative decrease in the number of 3D graphitic nano-crystals and an increase in the predominantly 2D ones. The Raman studies confirmed the above conclusions.