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Effect of Cu Dopant on ZnO Photocatalyst in the Degradation of Navy Blue Textile Dye from Synthetic Wastewater
Author(s) -
Kumaran Vetriselvan,
Reshmawhahini V. R.,
Gomathipriya P.
Publication year - 2021
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.202000458
Subject(s) - zinc , materials science , scanning electron microscope , photocatalysis , dopant , chemical engineering , wastewater , diffuse reflectance infrared fourier transform , dyeing , copper , reactive dye , degradation (telecommunications) , nuclear chemistry , doping , chemistry , metallurgy , waste management , catalysis , composite material , organic chemistry , optoelectronics , telecommunications , computer science , engineering
The effect of synthesized zinc oxide and copper‐doped zinc oxide in the removal of reactive navy blue dye by photocatalytic action is discussed. ZnO and Cu@ZnO were synthesized in nanoscale by chemical methods and characterized by scanning electron microscopy, energy dispersive X‐ray spectroscopy, and X‐ray diffraction. The decrease in the optical band gap of zinc oxide as a result of copper doping was studied by UV‐vis diffuse reflectance spectroscopy. The prepared compounds were applied for the degradation of reactive navy blue dye in wastewater and the optimum process parameters were obtained. A considerable removal of navy blue dye was achieved by both ZnO and Cu@ZnO with higher removal efficiency by Cu@ZnO. The degradation percentage of dye was further increased by modifying the photoreactor for producing a shorter focal length of light.