Open AccessSolar Photocatalytic Activity of Nanocrystalline ZnO Obtained from Different Precursors
Author(s) -
Imran S. Quraishi,
R.A. Pawar,
Dnyaneshwar R. Shinde,
Popat Tambade,
Manohar G. Chaskar
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.2020.22520
Subject(s) - photocatalysis , zinc , chemistry , thermogravimetric analysis , nanocrystalline material , scanning electron microscope , thermal decomposition , nuclear chemistry , chemical engineering , decomposition , aqueous solution , inorganic chemistry , materials science , catalysis , organic chemistry , crystallography , engineering , composite material
In present study, ZnO photocatalysts were successfully synthesized by thermal decomposition ofdifferent precursors. Thermal decomposition temperatures of precursors were obtained bythermogravimetric analysis. The synthesized ZnO photocatalysts were characterized for their crystallinephase, surface morphology and band gap, respectively by powder X-ray diffraction, scanning electronmicroscopy and diffuse reflectance spectroscopic methods. Chemical analysis of synthesized ZnOphotocatalysts was performed for Zn(II) content. Photocatalytic activity of ZnO photocatalysts wasevaluated under the solar irradiation on crystal violet dye in aqueous solution. The results of experimentsshowed that ZnO synthesized from zinc carbonate consists of higher photocatalytic activity than ZnOsynthesized from other precursors, which is even higher than bench mark Degussa P-25 TiO2photocatalyst. ZnO synthesized from zinc carbonate is further used for mineralization of dyes fromthree different effluents.