Synthesis and Characterization Thin Film TiO2 as Degrading Procion Red MX-8B Textile Dye

Abstract

TiO2 photocatalyst is one of type semiconductor that is often used in textile dyes photodegradation
method which characteristics are influenced by the size of crytal. Synthesis of TiO2 photocatalysts
can be done by several methods, one using the sol-gel method. By treating variations in the
composition of the reactans and treatment of synthesis in sol-gel method, the size of the TiO2
crystals can be controlled to produced the desired characteristics. This study has been made of
TiO2 photocatalysts in the form of thin-layer films using sol-gel method with annealing process at
a temperature of 550oC. This study examines the effect of the concentration of precursor TTIP and
hydrolysis ratio of the crystal structure, crystallinity, the band gap energy, and photocatalyst
activity to degrade procion red mx-8b dye compound. The result obtained is known that the crystal
synthesized has structure of TiO2 anatase. Value crystal size, crystallinity, the band gap energy,
and percent degradation has a value that depends on the composition of TTIP concentration and
hydrolysis ratio. Although the results showed morphology of TiO2 particle indivcate that large size
and crystallinity value is still low, but that is interesting each of the measurement results mutually
support each other.
Keywords: photocatalyst, TiO2, Sol-gel, TTIP concentration, hydrolysis ratio