Synthesis of a hybrid material based on a high-surface-area magnetic Fe3O4@TiO2 core–shell structure and immobilized Ni–PNP aliphatic pincer complex: study of the structural, magnetic, and antibacterial properties and nonenzymatic electrochemical sensing

Synthesis of a hybrid material based on a high-surface-area magnetic Fe 3 O 4@ TiO 2 core–shell structure and immobilized Ni–PNP aliphatic pincer complex: study of the …
Authors
Fatemeh Ariaeinezhad, Gholamhossein Mohammadnezhad, Oluseun Akintola, Winfried Plass
Publication date
2026
Journal
Materials Advances
Publisher
Royal Society of Chemistry
Description
The present study reports a multistep synthesis of a hybrid material based on a Fe3O4@TiO2 core–shell with an immobilized aliphatic nickel–PNP pincer complex. The Fe3O4@TiO2 core–shell structure was obtained using an in situ method based on a controllable one-pot synthesis of TiO2 on the surface of the Fe3O4 core. The hydrolysis of the molecular precursor titanium(IV) ethoxide was carried out by reaction in a mixture of ethanol, acetic acid, and water with a mole ratio of 1 : 25 : 0.1 : 4 at reflux temperature, leading to a high surface area core structure with an amorphous shell. The formation of the material and the immobilization of the complex were confirmed by FT-IR spectroscopy, XRD, FE-SEM, TEM, TGA, DSC, CHN analysis, and XPS. The amount of the immobilized nickel complex was quantified using ICP/OES analysis. The properties of the hybrid material were further investigated using UV-Vis …