Photocurable “all-lignocellulose” derived hydrogel nanocomposites for adsorption of cationic contaminants

Removal of contaminants from wastewater is one key element for the development sustainable society. Here, innovative “all-lignocellulose” derived photo-curable hydrogel nanocomposites based on methacrylated carboxymethyl cellulose (M-CMC) and lignosulfonate-derived carbonaceous products were successfully designed. The carbon synthesized by microwave-assisted hydrothermal carbonization (MAHC), followed oxidation methacrylation. This yielded nano-graphene oxide (nGO) nGO (M-nGO). structure was confirmed several spectroscopic techniques. photo-curing process, mechanical properties, swelling degree, adsorption efficiency towards cationic recycling produced containing different amounts or M-nGO evaluated. Rapid demonstrated all studied compositions. However, shielding effect caused addition aromatic increased time required reaching gel point (8.5–19.5 s, instead 4.8 s pure M-CMC). partially compensated M-nGO, that could participate in process. photo-cured nanocomposites, M-CMC/nGO M-CMC/M-nGO, good extremely high degrees, outstanding capacity (up to 350 145 mg/g MB Cu(II) adsorption, respectively) very recyclability at least 3 cycles. designed are, thus, promising candidates purification ensure access clean water.