ABSTRACT: The photoreduction
of Cd (II) has been investigated using thin layer catalyst of titanium dioxide
and chlorophyll as sensitizer. Thin layer catalyst could be prepared by sol gel
method deposited on glass slide. The treatments of experimental are: TiO2 catalyst
using chlorophyll without sunlight illumination, TiO2 catalyst using
chlorophyll with sunlight illumination and TiO2 catalyst with sunlight
illumination. The concentration of Cd (II) in the solution is monitored every
30 minutes until 150 minutes illuminations by atomic absorption spectroscopy.
The results showed that concentration of Cd (II) decreased reached to 45,53 %
in TiO2 catalyst using chlorophyll with sunlight illumination at pH 5 after 150
minutes illumination and it decreased reached to 34.07% at pH 7 after 120
minutes illumination. Addition the chlorophyll to TiO2 catalyst increased
photoreduction activities.
Keywords: photoreduction, chlorophyll, sol gel, thin
layer, TiO2, Cd(II)
Penulis: Uyi Sulaeman , Kapti
Riyani, Anung Riapanitra, Dyah Indriastuti
Kode Jurnal: jpkimiadd070023
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