Open AccessPhotocatalytic Degradation of Methylene Blue via Cobalt Doped Fe3O4 Nanoparticles
Author(s) -
Tippabhotla A. Kamakshi,
G. Sunita Sundari
Publication year - 2020
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2020.22621
Subject(s) - cobalt , photocatalysis , chemistry , nanoparticle , doping , nanomaterials , methylene blue , nuclear chemistry , scanning electron microscope , fourier transform infrared spectroscopy , spinel , octahedron , inorganic chemistry , photochemistry , ion , materials science , nanotechnology , chemical engineering , catalysis , organic chemistry , metallurgy , optoelectronics , engineering , composite material
Cobalt doped Fe3O4 i.e., CoFe3O4 nanoparticles of different concentrations (0, 0.5, 1.0, 1.5, 2.0, 2.5mol% were represented as Fe3O4, CF1, CF2, CF3, CF4, CF5, respectively) were synthesized using achemical co-precipitation technique. The XRD patterns and FTIR spectra of Co doped Fe3O4 revealedthe formation of spinel structure indicating the successful incorporation of cobalt ions with the Fe3O4structure of the iron ions at octahedral sites. Scanning electron micrographs showed a fine uniformspherical particles. UV spectroscopic analysis showed that cobalt doping in CoFe3O4 nanocompositesinfluenced the band gap values. These band gap values decreased in the range of 2.76-1.61 eV (direct),2.53-0.97 eV (indirect) with increase of cobalt content. The activity of CoFe3O4 in photocatalysis wasinvestigated using methylene blue azo dye under visible light. These results depicted that for 1%cobalt doped Fe3O4 novel material photocatalytic activity was enhanced than all other preparednanomaterials.