pH-responsive sodium alginate-based superporous hydrogel generated by an anionic surfactant micelle templating

► Superporous NaAlg-based hydrogel was prepared by the self-assembling micelle templating. ► FTIR spectra demonstrated that the removing of micelle from the final hydrogel network. ► The morphology and porous structure of the hydrogel was evaluated by SEM. ► The surfactant micelle templating is an efficient technique to produce superporous hydrogel.