“…In this context, activated carbon is the most used material due to its efficient adsorption capacity [ 6 , 7 , 8 ]. On the other hand, nanomaterials are a promising alternative due to the improvement of properties through surface and structural modifications [ 9 , 10 , 11 , 12 ]. Therefore, many researchers have studied alternative adsorbents that can efficiently substitute for activated carbon, including agricultural residues (sugar cane bagasse, coconut husk, corn cob) [ 13 ], zeolites [ 14 , 15 ], and silica [ 16 , 17 , 18 ], among others [ 19 , 20 ].…”