▎ 摘　　要

NOVELTY - Composition comprises calcium alginate, one or more of graphite oxide, graphene oxide, and graphene dispersed within the calcium alginate. USE - Composition. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for making composition, which involves: (A) forming a dispersion comprising a solvent and one or more of graphite oxide, graphene oxide, and graphene; (B) adding the dispersion to a first aqueous solution comprising sodium alginate to form a composite solution; (C) adding the composite solution to a second aqueous solution comprising calcium chloride; and (D) converting the sodium alginate to insoluble calcium alginate with the one or more of graphite oxide, graphene oxide, and graphene dispersed in the calcium alginate to form a hydrogel.