Abstract
Controlling the hydrophilic properties of the surface of nanomaterials is of interest for various applications including optics, photocatalysis, and spintronics. Methods for designing the defect structure of the surface layers of faceted zinc-oxide nanorods with sacrificial doping with iodine in the framework of hydrothermal synthesis are described. The features of the chemical composition of the surface of the obtained layers are studied using X-ray photoelectron spectroscopy. It is found that there are no peaks corresponding to the binding energy of iodine in X-ray photoelectron spectra. The spectrum of the 1s level of oxygen O for iodine-doped zinc-oxide nanorods shows an additional peak with a binding energy of 531.8 eV, which corresponds to the oxygen of OH groups. During heat treatment of the synthesized layers, iodine volatilizes, which leads to a change in the surface composition and an increase in the oxygen content of surface hydroxyl groups. A model is proposed for explaining the obtained experimental results. It is established that X-ray-photoelectron-spectroscopy techniques are efficient for analyzing the defect structure of the surface of functional layers based on faceted zinc-oxide nanorods.
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Shomakhov, Z.V., Nalimova, S.S., Bobkov, A.A. et al. X-Ray Photoelectron Spectroscopy of the Surface Layers of Faceted Zinc-Oxide Nanorods. Semiconductors 56, 450–454 (2022). https://doi.org/10.1134/S1063782622130097
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DOI: https://doi.org/10.1134/S1063782622130097