SCHEDULED MAINTENANCE
Photochemically enhanced photocatalytic and magnetic properties of TiO2via Co(ii) ion implantation from a Co(ii)–picoline complex
Abstract
Anatase TiO2 nanoparticles (NPs) are pivotal in photocatalytic materials, as it is possible to precisely manipulate their composition, shape, and functionality toward different applications. This study presents a nondestructive method to implant cobalt(II) ions into anatase TiO2 NPs. Using trans-[Co(4-MePy)4Cl2] as a precursor, single-crystal XRD confirms its structure. The resulting adduct, ≡TiO2//[Co(4-MePy)4Cl2], facilitates electron transfer under UV light, releasing cobalt(I) which forms surface complexes. Subsequent re-oxidation by dissolved oxygen converts cobalt(I) back into Co(II), forming Co–TiO2 NPs. Unveiling a novel approach, this study introduces nondestructive implantation of cobalt(II) ions into anatase TiO2 nanoparticles, offering a breakthrough in advanced materials science. Through meticulous characterization and spectral analyses, the formation of surface-bound adducts and sub-surface grafting are elucidated, highlighting the unique interaction between cobalt complexes and TiO2. The resulting Co–TiO2 NPs exhibit exceptional photocatalytic activity under visible light and display intriguing weak ferromagnetic properties, showcasing their potential for multifaceted applications in photocatalysis and spintronics. This work represents a significant advancement in the synthesis and utilization of functionalized TiO2-based materials for photocatalytic application.
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