Synthesis of Titania Doped Copper Ferrite Photocatalyst and Its Photoactivity towards Methylene Blue Degradation under Visible Light Irradiation

Abstract

This paper reports the photocatalytic decomposition of methylene blue (MB) over titania doped copper ferrite, CuFe2O4/TiO2 with 50 wt% loading, synthesized via sol-gel method. The synthesized photocatalyst was characterized by X-ray diffraction, UV-vis diffuse reflectance, photoluminescence, and Mott-Schottky (MS) analysis and linear sweep voltammetry (LSV). The catalyst loadings were varied from 0.25-1.0 g/L and the optimum catalyst loading found to be 0.5 g/L. The maximum conversion achieved at this optimized CuFe2O4 concentration was 83.7 %. The other loadings produced slightly lower conversions at 82.7%, 80.6% and 80.0%, corresponding to 0.25, 1.00, and 0.75 g/L after 3 hours of irradiation. The study on the effect of initial concentration indicated that 20 ppm as the optimum concentration, tested with 0.5 g/L catalyst loading. The spent catalyst was used for the recyclability test and demonstrated a high longevity with a degradation efficiency less than 6 % for each time interval. The novelty of this study lies on the new application of photocatalytic material, CuFe2O4/TiO2 on thiazine dye that shows remarkable activity and reusability performance under visible light irradiation. Copyright

Nanocomposites containing titanium dioxide for environmental remediation

“…Methylene blue and methyl orange was best degraded using laboratory synthesized titania that was fluorinated and Pt doped, however, for commercial titania that was just fluorinated had shown best degradation for aniline-based dyes. Arifin et al [ 116 ] studied copper ferrite as dopant instead of Cu and Fe separately. Copper ferrite has spinel type nanostructure that has narrow band gap was used in that study as dopant on titania.…”

“…was fluorinated and Pt doped, however, for commercial titania that was just fluorinated had shown best degradation for aniline-based dyes. Arifin et al [116] studied copper ferrite as dopant instead of Cu and Fe separately.…”

Progress, Challenges and Opportunities in Divalent Transition Metal-Doped Cobalt Ferrites Nanoparticles Applications

“…One of the main applications of magnetic NPs as catalysts is in the photocatalytic degradation or organics in the presence of visible or UV light. The photocatalytic activity of NPs is based on their capacity to efficiently absorb photons, that excite electrons from the valence band into the conduction band, leaving positively charged vacancy to react with the water molecules and to generate active radicals such are hydroxyl (•OH) or superoxide (•O 2 ) that further react with the pollutants [56]. Beside the ability to absorb photons, the reusability, recyclability, low cost, chemical stability and high corrosion resistance are important factors in the selection of photocatalysts [57].…”

“…By doping, its structural and catalytic properties may be further enhanced. The doped and codoped Co ferrites are promising catalysts that may decompose recalcitrant organic chemicals from wastewaters or enhance the synthesis of organics [9,52,56,[59][60][61]. The doping of transition metal ions (Cr, Mn, Co, Zn) into the spinel lattice of Co ferrite influences the physicochemical properties and improves their stability [11].…”

One-pot hydrothermal synthesis and characterization of magnetic nanocomposite of titania-deposited copper ferrite/ferrite oxide for photocatalytic decomposition of methylene blue dye

“…There have been few reports on the synthesis of TiO 2 / CuFe 2 O 4 used for photocatalytic applications [33][34][35][36]. In this work, the magnetic recyclable catalyst, TiO 2 /CuFe 2 O 4 / Fe 2 O 3 (TCF), was prepared using the one-pot hydrothermal method.…”