The post chemical activation treatment was also performed to
compare the treatment effect of oxidation with that of activation.
For a typical run, 0.3 g of ordered mesoporous carbon was
impregnated with a 15 mL solution of 1 M potassium hydroxide
followed by water evaporation at 120 C. The activation process was
performed with nitrogen flow (100 mL/min) at 800 C, with a
ramping rate of 10 C/min, for 1 h. The resultant sample was
washed with 0.1 M hydrochloric acid solution followed by deionized water until the pH of the filtrate water became neutral, then dried at 100 C in air. The same post chemical activation treatment
was also carried out for the commercial Maxsorb activated carbon.