Work

Efficient lithium-ion recovery using selective organically crosslinked HTO-polyacrylamide-graphene nanocomposite hydrogels

Year: 2025

Type: article

Abstract: Efficient extraction of Li + ions from seawater is critical for sustainable energy storage technologies. This study integrates H 2 TiO 3 (HTO) into a thermo-mechanically reinforced, organically crosslinked polyacrylamide-commercial graphene (PAM-CG) nanocomposite hydrogel to enhance Li + adsorption and material recovery. Fourier transform infrared spectroscopy (FTIR spectroscopy) and X-ray diffraction analyses confirmed the incorporation of HTO, while thermal analysis showed improved stability (192.5°C vs. 188.2°C for PAM). The porous, wedge-shaped morphology observed by SEM and BET analysis facilitated effective ion capture. The HTO-PAM-CG hydrogel exhibited an adsorption capacity of 42.5 mg g −1 , followed by pseudo-second-order kinetics (k = 2.59 × 10 −3 g mg −1 min −1 ), and retained high efficiency over nine cycles. These findings highlight the potential of mechanically reinforced polymer-inorganic composites for the selective and recyclable recovery of Li from seawater.

Source: Cell Reports Physical Science

DOI: 10.1016/j.xcrp.2025.102984

Authors: Mohan Raj Krishnan, Edreese H. Alsharaeh

Institution: Alfaisal University

Language: English

Topic: Extraction and Separation Processes

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Responsible consumption and production, Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $5,620