Open AccessPhotocatalytic Activity of Nickel Doped CoO Nanocomposite for the Degradation of Azure A Dye
Author(s) -
Nirmal Singh,
Avinash Kumar,
Ritu Vyas,
Rameshwar Ameta
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.2021.22996
Subject(s) - photocatalysis , nanocrystalline material , fourier transform infrared spectroscopy , high resolution transmission electron microscopy , chemistry , nuclear chemistry , doping , nanocomposite , nickel , visible spectrum , cobalt , transmission electron microscopy , scanning electron microscope , nickel oxide , materials science , inorganic chemistry , chemical engineering , nanotechnology , catalysis , organic chemistry , crystallography , composite material , optoelectronics , engineering
Nanocrystalline cobalt(II) oxide doped with nickel was prepared using the sol-gel method and employedas a photocatalyst for azure A dye degradation under visible light. The prepared photocatalyst wasanalyzed using energy-dispersive X-ray (EDX) spectroscopy, field emissionscanning electron microscopy (FESEM), Fourier-transform infrared (FTIR), X-ray diffraction (XRD)and high-resolution transmission electron microscopy (HRTEM) techniques. The photocatalytic activity ofNi-doped CoO under different working parameters, like concentration, pH, dosage (Ni-doped andundoped CoO), light intensity for the degradation of azure A dye was also optimzed. It was observedthat the dye degradation rate improved after doping. Approximately 76% and 85% of azure A dye wasdegraded within 90 min through undoped and Ni-doped CoO, respectively.