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Karunakaran Chockalingam,Singh I. Jeba,Vinayagamoorthy Pazhamalai 한국세라믹학회 2023 한국세라믹학회지 Vol.60 No.2
Cubic Ag2O-deposited anatase TiO2 nanospheres with cubic Ni0.5Zn0.5Fe2O4-core have been obtained by a 2-stage synthesis. They have been characterized by energy-dispersive X-ray spectroscopy, high-resolution scanning and transmission electron microscopies, X-ray and selected area electron diffractometries, vibrating sample magnetometry, nitrogen adsorption and desorption, and UV–visible diffuse reflectance and photoluminescence spectroscopies. The synthesized samples are superparamagnetic and absorb UV-A light and visible light in the entire wavelength range. Structure directing agent polyvinylpyrrolidone provides little influence on the Ag2O-capping process. The synthesized Ni0.5Zn0.5Fe2O4-core/Ag2O-capped TiO2-shell nanospheres are whole visible light-active magnetically recoverable photocatalyst; capped Ag2O sensitizes anatase TiO2 under whole visible light and the ferrite core buried in TiO2 lattice enables magnetic recovery of the photocatalytic nanospheres.