“…The micropore surface area and volume were estimated using the t-plot method based on the N 2 adsorption (de Boer et al, 1963;Webb and Orr, 1997;Hodson, 1999;Scherdel et al, 2010). In t-plots, the adsorbed N 2 volume (V ads ) is plotted against the statistical thickness (t) of the adsorbed layer of N 2 adsorption.…”