In this study, synthetic viscose rayon fabric has been used for preparing activated carbon
fabric (ACF), impregnated with different concentrations of H3PO4. The effect of H3PO4 impregnation
on the weight yield, surface area, pore volume, chemical composition and morphology
of ACF were studied. Experimental results revealed that both Brunauer-Emmett-
Teller surface area and micropore volume increased with increasing H3PO4 concentration;
however, the weight yield and microporosity (%) decreased. It was observed that samples
impregnated at 70°C (AC-70) give higher yield and higher microporosity as compared to
30°C (AC-30). The average pore size of the ACF also gradually increases from 18.2 to 19
and 16.7 to 20.4 ? for 30°C and 70°C, respectively. The pore size distribution of ACF was
also studied. It is also concluded that the final ACF strength is dependent on the concentration
of impregnant.