PENGARUH UDARA TERHADAP FOTOLISIS AIR OLEH SERBUK TiO2 DENGAN ADANYA KALIUM IODIDA
ABSTRACT: Hydrogen is one of
the promising alternative energy sources which is environmentally-friendly.
Amongs several methods that have been used to produce hydrogen is a photolysis
base on photochemical reaction which has been choosen and applied for this
work. In this system where water was photolyzed in the present of TiO2 powder
as photocatalyst and potassium iodide as sacrificial agent. The sample was
prepared by addition various potassium iodide concentrations and then each
sample was treated in the present and absent of air. The sample was placed in a
quartz reactor which was then illuminated by a Philips low pressure vapoured
mercury lamp (λ = 254 nm) as light source for 7 hours. Produced gas volume was
measured by a method based on the movement of soap bubbles. The results showed
that the maximum gas volume obtained at 0.006 g/L TiO2 and 0.1 g/L KI
concentration (in the present and absent of air) were applied. Furthermore, the
maximum volume of hydrogen gas was produced at the present of air. In the
present of air, dissolved oxygen accelerated H2 gas productions which act as
oxidation agent and electron carrier to H+.
Penulis: Admin Alif,
Hermansyah Aziz, Olly Norita Tetra, Suci Mulya Prima
Kode Jurnal: jpkimiadd100169
