Sonochemical Facile Synthesis of Self-Assembled Poly(o-phenylenediamine)/Cobalt Ferrite Nanohybrid with Enhanced Photocatalytic Activity

Abstract

Although several photocatalytic materials have been discovered, developing an efficient visible light photocatalyst is still a great challenge in the photocatalysis field, because the existing inorganic semiconductors are only active in the ultraviolet (UV) range. With the aim to enhance the photocatalytic activity of CoFe 2 O 4 in the visible region, the present preliminary study reports the synthesis of nanocomposites of CoFe 2 O 4 /poly(o-phenylenediamine) nanohybrid. The structure of the synthesized nanohybrid was confirmed by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and transmission electron microscopy (TEM) analyses. Photocatalytic activity of the nanohybrid was investigated using Malachite Green (MG) as a model dye. Results revealed that enhanced photocatalytic activity was achieved in the visible range, because of the generation of holes in the narrow band gap of CoFe 2 O 4 via sensitization with poly(o-phenylenediamine). A plausible pathway and mechanism for the photocatalytic degradation of Malachite Green (MG) is also discussed.

Microwave-Assisted Catalytic Degradation of Brilliant Green by Spinel Zinc Ferrite Sheets

“…Schematic diagrams of comparative study among the UV, visible, and MW irradiation catalytic degradation: (1) Zn 1– x Co x Fe 2 O 4 (visible), 40 (2) ZnO/Nb 2 O 5 (visible), 41 (3) CoFe 2 O 4 /(poly( o -phenylenediamine) (visible), 6 (4) polycarbazole–TiO 2 (UV), 43 (5) TiO 2 (UV), 44 (6) ZnO/Ag/C 3 N 4 (UV), 45 (7) BaFe 2 O 4 (MW), 19 (8) CoFe 2 O 4 (MW), 47 (9) MnFe 2 O 4 –SiC (MW), 48 (10) nickel oxide (MW), 46 and (11) our catalyst ZFO (MW).…”

Tuning the spectral, thermal and fluorescent properties of conjugated polymers via random copolymerization of hole transporting monomers

“…Electronically conjugated polymers have drawn considerable attention due to their vibrant applications in low cost optoelectronic devices. [1][2][3][4][5] These materials hold wide scope in designing light-emitting diodes (LEDs) which produce light via the recombination of electrons and holes. To achieve high luminescence efficiency, the electron and hole currents must be balanced, implying similar injection and transport behaviour from the two types of carriers.…”

Facile synthesis of novel polypyrrole dispersed AgFeO2nanohybrid with highly efficient photocatalytic activity towards 2,4,6-trichlorophenol degradation

“…The hydroxide solution was then heated at 70 °C for 1 h. Ammonium hydroxide solution (50 ml) was slowly added to the above solution until a pH value of 12 was attained. 21 The solutions were further stirred for 24 h and the resulting ruby-brown precipitate was collected by filtration. The precipitate was then washed several times with deionized water and dried at 60–70 °C in vacuum oven for 24 h. Ruby red color powder was obtained which was sintered at 700 °C in a muffle furnace to obtain the desired silver ferrite.…”