Surface-cleaned hydroxyapatite nanowires for aqueous copper ion removal: performance, adsorption mechanisms and membrane filtration application.

ABSTRACT: Ligand-assisted nanoparticle synthesis offers precise size and morphology control but often compromises intrinsic surface properties and hinders further functionalization due to ligand capping. To address this limitation, we demonstrate a simple and efficient strategy for complete ligand removal using oleate-capped hydroxyapatite (HA) nanowires as a model system. Ethanol treatment at 70 °C (denoted ET-70) effectively eliminates oleate ligands from HA nanowire surfaces, as confirmed by FTIR and contact angle analyses. The resulting clean surfaces expose abundant active sites, significantly enhancing copper ion adsorption capacity compared to untreated counterparts. Batch adsorption experiments demonstrated that ET-70 achieved a maximum Cu²⁺ adsorption capacity of 63.92 mg g^-

SUBMITTER: Jiang Y 

PROVIDER: S-EPMC12683509 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature