Synthesis of Superparamagnetic Cu_0.4Zn_0.6Fe₂O₄-Implanted Bi₂S₃-Capped TiO₂ 2D and 3D Nanostructures for Visible Light Photocatalysis

Abstract

Sharp narrow nanopetal-like and wrinkled nanoball-like cubic Cu 0.4 Zn 0.6 Fe 2 O 4 -implanted orthorhombic Bi 2 S 3 -capped anatase TiO 2 heterostructures have been synthesized by a two-step hydrothermal process in acidic and basic environments. They have been characterized by high-resolution scanning and transmission electron microscopies, energy-dispersive X-ray spectroscopy, selected area electron and powder X-ray diffractometries, vibrating sample magnetometry, UV–visible diffuse reflectance and photoluminescence spectroscopies, and nitrogen adsorption–desorption analysis. Both the nanostructured composites are superparamagnetic. While the nanocomposite synthesized in acidic environment absorbs in the entire visible and UV spectral regions, the absorption edge of nanocomposite obtained in basic environment narrowly misses the red end of the visible spectrum. The emission spectra of both the nanomaterials are strikingly similar, indicating similar crystal defects in anatase TiO 2 lattice of both the nanocomposites. Although both the nanocomposites degrade dye under visible light, the photocatalytic activity of the sample obtained in acidic environment is superior to that prepared in basic condition. The enhanced photocatalytic activity of the nanocomposite synthesized in acidic environment is rationalized in terms of nanostructure, surface area, and optical properties.

A self-activating electron transfer antibacterial strategy: Co3O4/TiO2 P–N heterojunctions combined with photothermal therapy

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Synthesis of superparamagnetic biocidal superior solar photocatalytic Fe3O4-implanted Ag2S-capped ZnO micro-clubbells

“…Its pore radius, determined by BJH desorption, is 12 nm. The specific surface area of the micro-clubbells is comparable to those of photocatalytic nanocomposites [37] and the likely reason is the micro-clubbells are mesoporous.…”

Ni0.5Zn0.5Fe2O4‐dispersed In2O3‐spotted ZnO nanoparticles: Ammonia‐source and surface and photocatalytic properties

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