Abstract <p>The H₂TiO₃ ion sieves have demonstrated as a promising adsorbent for lithium extraction from liquid lithium resources. However, it is still challenging to simultaneously manipulate the surface hydrophilicity and micro-structure of ion sieves for efficient lithium extraction. Here, we have grafted sodium dodecyl sulfate (SDS) on H₂TiO₃ ion sieves to enhance its hydrophilicity, and simultaneously promoted the formation of porous structure for the ion sieves with the addition of aluminum chloride (AlCl₃⋅6H₂O) through the solid-phase method. The effects of SDS and Al co-modification on the hydrophilicity, morphology, structure, and adsorption properties of the H₂TiO₃ ion sieve have been systematically investigated. The modified ion sieve features a uniform and dense mesoporous structure with improved surface hydrophilicity, enhancing its lithium extraction capability and increasing its contact sites with Li⁺ in solution. As a result, the modified H₂TiO₃ ion sieves demonstrated efficient lithium extraction performance with the maximum adsorption capacity reached 64.4 mg/g, significantly outperforming the unmodified ion sieves (56.3 mg/g). Furthermore, the adsorption isotherms of Li⁺ on the SDS and Al co-modified titanium lithium ion sieve follow the Langmuir model, and the adsorption kinetics fit the pseudo-second-order model.</p>