SYNTHESIS OF ZnO-AC COMPOSITE AND ITS USE IN REDUCING TEXTILE DYES CONCENTRATIONS OF METHYLENE BLUE AND CONGO RED BY PHOTODEGRADATION
ABSTRACT: Research on
minimization of textile dyes concentration of methylene blue (MB) and congo red
(CR) through photodegradation using ZnO-Activated Carbon (ZnO-AC)composite has
been done. The research included synthesis of Zinc oxide (ZnO) with various solvent
ratio (water: ethanol), synthesis of ZnO - AC composite, and the application of
the composite to reduce the concentrations of MB and CR in the artificial waste
by photodegradationprocess. The characteristics of the zinc oxide particle were
determined by Fourier Transformed Infra Red (FTIR), X-Ray Diffraction (XRD) and
Scanning Electron Microscope (SEM).Photodegradation of the textile dyes was
carried out by exposing the mixture of the dyes and thecomposite to the
Ultraviolet light. The colour intensities before and after exposure weredetermined
by using visible spectrophotometer. The result show that the greater the water:ethanol
ratio is used, the easier, faster and more ZnO formed. FTIR spectra of the synthesized
ZnO indicate the presence of the functional groups of Zn-O, O-H, N-H, C-H and C-O.
All the diffraction peaks of synthesized ZnO that located at 2 31.79-31.91 ,
34.45-34.57 , and 36.27-36.40 are consistent with the hexagonal phase wurtzite
ZnO. Characterization of ZnO with SEM show that the particle shape of the
synthesized ZnO is spherical and the sizes of particles are 220,5 nm to 1222
nm. The nearest spherical shape is resulted by water:ethanol ratio of 150
mL:150 mL. The photodegradation percentages of MB and CR with ZnO-AC compositeare
higher than those without ZnO-AC composite, with the highest percentages given
by thecomposite made of ZnO that is synthesized with water:ethanol ratio of 150
mL: 150 mL.
Author: Ni Putu Diantariani,
Iryanti Eka Suprihatin, Ida Ayu Gede Widihati
Kode Jurnal: jpkimiagg160034
Artikel Terkait :
Jp Kimia gg 2016
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