Fabrication of Novel Heterostructure-Functionalized Graphene-Based TiO 2 -Sr-Hexaferrite Photocatalyst for Environmental Remediation.
Kefayat UllahWon-Chun OhPublished in: Nanomaterials (Basel, Switzerland) (2022)
Novel visible-light photocatalyst (titanium-dioxide-functionalized graphene/strontium-hexaferrites) TiO 2 -FG/Sr-hexaferrite nanocomposites were fabricated using a simple hydrothermal technique. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), diffuse reflectance spectroscopy (DRS), transmission electron microscopy (TEM), Raman spectroscopic analysis, and atomic force microscopy were used to analyze the composites as prepared. The unique TiO 2 -FG/Sr-hexaferrite-based composite catalyst reveals superior photocatalytic properties for the disintegration of organic dyes methylene blue (MB) and rhodamine B (Rh. B) under visible-light irradiation. The result showed that the functionalized graphene with ternary structure improved the catalytic behavior of the composite due to the synergistic effect of the TiO 2 -FG boosted by the graphene surface to provide a fast conducting path to the photogenerated charge carrier. The markedly high photocatalytic behavior has been ascribed to the formation of the ternary structure between TiO 2 , FG, and Sr-hexaferrites through interface interaction. The prepared photocatalyst composite exhibited better recyclability, which further confirms its future uses as a photocatalyst in industrial waste products.
Keyphrases
- visible light
- electron microscopy
- atomic force microscopy
- room temperature
- carbon nanotubes
- high resolution
- heavy metals
- walled carbon nanotubes
- single molecule
- high speed
- molecularly imprinted
- wastewater treatment
- magnetic resonance imaging
- mass spectrometry
- risk assessment
- municipal solid waste
- computed tomography
- low grade
- magnetic resonance
- solid state
- drug delivery
- anaerobic digestion
- molecular dynamics simulations
- ionic liquid