Recovery of lithium using H4Mn3.5Ti1.5O12/reduced graphene oxide/polyacrylamide composite hydrogel from brine by Ads-ESIX process

•HMTO-rGO/PAM composite hydrogel was fabricated with good conductive and selective properties.•Li+ could be recovered from brine using HMTO-rGO/PAM by Ads-ESIX method with increased efficiency.•The optimum recovery condition of lithium ions was found.•The optimum recovery condition of lithium ions was found.•HMTO-rGO/PAM showed good regeneration ability and long-term cycle stability.