Modification of carbon black by thermal treatment in air atmosphere. (April 2020)

• Record Type: Journal Article
• 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
• Is Part Of: Journal of physics. Volume 1492(2020)
• Publication Date: 2020-04
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1492/1/012063
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: 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 sp 2 -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.