Akademik Veri Yönetim Sistemi
Surfaces and Interfaces, cilt.84, 2026 (SCI-Expanded, Scopus)
Iron oxide nanorods are promising materials for catalytic and environmental applications. However, the role of carbon-support surface chemistry in interface-directed nucleation and growth remains incompletely understood. In this study, Fe₂O₃ was deposited onto activated carbon that had been (i) enriched with oxygen through HNO₃ treatment and (ii) modified with tetraethylenepentamine (TEPA) under various conditions. To investigate these effects, we employed several techniques, including nitrogen sorption (BET), FT-IR spectroscopy, SEM/EDS with elemental mapping, Boehm titration, and XRD. Our findings reveal that surface functional groups influence nucleation density, crystallite size, and anisotropy of the nanorods. Oxygenated carbons facilitate electrostatic adsorption, leading to the formation of partially elongated Fe₂O₃ domains. In contrast, TEPA-rich surfaces provide coordination sites for Fe-N that suppress radial growth and promote one-dimensional extension, promoting the formation of uniform nanorods with high aspect ratios. These results establish a clear link between support surface chemistry and Fe₂O₃ morphology, providing practical guidelines for engineering FeₓOᵧ/Carbon composites with tailored crystallinity and dispersion for catalytic applications.