Open AccessSynthesis of immobilized nanostructured ZnO grown on glass and its photocatalytic activity for cyanide degradation
Author(s) -
Rahmat Setiawan Mohar,
Isnaeni Isnaeni,
G Hadiko
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/541/1/012013
Subject(s) - wurtzite crystal structure , photocatalysis , materials science , photoluminescence , cyanide , aqueous solution , chemical engineering , scanning electron microscope , chemical bath deposition , degradation (telecommunications) , nuclear chemistry , nanotechnology , zinc , catalysis , metallurgy , optoelectronics , composite material , chemistry , organic chemistry , engineering , telecommunications , computer science
Nanostructured ZnO has been synthesized by using two simple steps, i.e. ultrasonic spray pyrolysis (USP) and chemical bath deposition (CBD) methods on glass substrates. The crystal structure, morphology, photoluminescence (PL) emission, and photocatalytic activity for cyanide degradation were studied. From the X-ray diffraction (XRD) examination, it was observed that the ZnO had the hexagonal wurtzite structure with the preferred orientation of (100). The field emission scanning electron microscopy (FESEM) image displayed that the ZnO had grass-like and bush-like nanostructures. The PL spectrum exhibited the near band-edge emission (NBE) peak at ∼380 nm. The photocatalytic activity of the nanostructured ZnO for cyanide degradation in aqueous solution was evaluated under warm-white lamp (color temperature of 2700 K) and cool-daylight lamp (color temperature of 6500 K) irradiations, resulting enhanced cyanide degradation rates in presence of the nanostructured ZnO.