“…For example, the reported maximum adsorption efciency of cellulose nanocrystals (CNCs) [40] and cellulose nanofbril aerogels [41] to MG was 212.7 mg/g and 243.9 mg/ g, respectively. Apart from MNPs, CNTs, and cellulosebased nanomaterials, several other nanocomposites also showed high adsorption efciency to MG, such as nanoiron oxide-loaded alginate microspheres [35], zeolite nanostructures [42], iron nanoparticles loaded on ash [43], bimetallic Fe-Zn nanoparticles [44], kappa-carrageenan-gpolyacrylic acid/TiO 2 -NH 2 hydrogel nanocomposite [45], gum xanthan/psyllium-based nanocomposite [46], and hematite-reduced graphene oxide composites [47]. In addition, reports using graft copolymer derived from amylopectin and poly(acrylic acid) [48], graphite oxide/polyurethane foam material [49], chitosan beads [50], and reinforced hybrid porous beads that are prepared with alginate, aluminumpillared montmorillonite, polyvinyl alcohol, and CaCO 3 [51] for MG removal also exist in literature.…”