Black-wattle tannin/kraft lignin HPO-activated carbon xerogels as excellent and sustainable adsorbents.

This work proposed new black-wattle tannin/kraft lignin HPO-activated carbon xerogels as sustainable and efficient adsorbents. The precursors were chosen based on their eco-friendly and cost-effective nature, aiming to achieve adsorbents with high adsorption capacities. Carbon xerogels were synthesized through polycondensation with formaldehyde and alkaline catalyst in a simple one-pot procedure.