▎ 摘　　要

NOVELTY - Preparing conductive manganese-titanium lithium ion sieve/graphene complex hydrogel comprises (i) preparing HMnTi by sol-gel method: (ia) adding lithium salt into aqueous ethanol solution to obtain solution A, and adding manganese salt, titanate and complexing agent into aqueous ethanol solution to obtain solution B: (ib) adding solution A to solution B, adding catalyst to obtain sol solution C, reacting to obtain sol gel, and grinding to obtain precursor D: (ic) roasting precursor D, raising temperature to obtain manganese-titanium lithium compound, washing, and drying; and (ii) preparing HMnTi/GNs-LIPs by in-situ thermal initiated polymerization method comprises adding graphene oxide into aqueous ethanol solution to obtain suspension, adding HMnTi obtained in step (i), ultrasonically mixing to obtain mixture E, adding unsaturated amide, cross-linking agent and initiator into mixture E, performing in-situ thermal initiated polymerization, reacting, crushing and drying product. USE - The method is useful for preparing conductive manganese-titanium lithium ion sieve/graphene complex hydrogel, and recovering lithium ion from salt lake brine (Claimed). DETAILED DESCRIPTION - Preparing conductive manganese-titanium lithium ion sieve/graphene complex hydrogel useful for recovering lithium ion from salt lake brine, adopts sol-gel method to prepare manganese-titanium lithium ion sieve, and in-situ thermally initiated polymerization to prepare manganese-titanium lithium ion sieve/graphene complex hydrogel MnTi/GNs-LIPs, method comprising (i) preparing manganese-titanium lithium ion sieve HMnTi by sol-gel method: (ia) adding lithium salt into 100 ml 10-100 wt.% aqueous ethanol solution, to obtain solution A, and adding manganese salt, titanate and complexing agent into 100 ml 10-100 wt.% aqueous ethanol solution, to obtain solution B: (ib) adding solution A dropwise to the solution B, adding catalyst to obtain sol solution C which react at 10-100 degrees C for 6-24 hours to obtain sol gel, and grinding to obtain precursor D: (ic) roasting the obtained precursor D, firstly raising the temperature to 200-600 degrees C with 5-10 degrees C/minute for 6-24 hours, raising the temperature to 600-900 degrees C with 5-10 degrees C/minute for 6-24 hours to obtain manganese-titanium lithium compound, washing with 5 wt.% hydrochloric acid for 2-10 hours, and drying to obtain manganese-titanium lithium ion sieve HMnTi; and (ii) preparing HMnTi/GNs-LIPs by in-situ thermal initiated polymerization method comprises adding graphene oxide into 100 ml 10-100 wt.% aqueous ethanol solution to obtain suspension, adding HMnTi obtained in step (i), ultrasonically uniformly mixing to obtain mixture E, adding unsaturated amide, cross-linking agent and initiator into mixture E, performing in-situ thermal initiated polymerization at 30-100 degrees C for 1-12 hours, placing into reducing agent solution, reacting at 10-100 degrees C for 2-24 hours, crushing and drying product. An INDEPENDENT CLAIM is also included for recovering lithium ion from salt lake brine by adsorption-electrode ionization desorption method, using HMnTi/GNs-LIPs as adsorbing material. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the scanning electron microscopic image of conductive manganese-titanium lithium ion sieve/graphene complex hydrogel.