Activation and structural and adsorption features of activated carbons with highly developed micro-, meso- and macroporosity

• DOI: 10.1007/s10450-010-9282-6
• Publication Date: 2010-11-03T17:16:57Z
• Authors: V. M. Gun’ko; V. V. Turov; O. P. Kozynchenko; V. G. Nikolaev; S. R. Tennison; S. T. Meikle; E. A. Snezhkova; A. S. Sidorenko; F. Ehrburger-Dolle; I. Morfin; D. O. Klymchuk; S. V. Mikhalovsky
• Keywords: C000 Biological and Biomedical Sciences; [CHIM]Chemical Sciences; 02 engineering and technology; 540; 0210 nano-technology; 530; F000 Physical Sciences; [PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft]

Three sets of activated carbons (ACs) were prepared with the same precursor but activated differently (by CO2 or water vapour) with various burn-off levels. The ACs demonstrate increased deviation of the pore shape from the slitshaped model with increasing burn-off and contributions of pores of different sizes depending on the activation type. Significant re-arrangement of adsorption complexes, especially of the Van der Waals type characteristic for nonpolar or weakly polar adsorbates (H2, CH4, CH2Cl2, CHCl3), occurs in both micropores and mesopores of ACs with decreasing temperature. The behaviour of their mixtures with water and DMSO can strongly differ from that of individual adsorbates.