Fig. 2

SEM image showing varying surface pore sizes (indicated by red dotted lines) in activated carbon produced from banana peels carbonized at: (a) 600 °C; (b) 700 °C [22]
SEM image showing varying surface pore sizes (indicated by red dotted lines) in activated carbon produced from banana peels carbonized at: (a) 600 °C; (b) 700 °C [22]