| Summary: | Dispersion of TiO2 on montmorillonite pillared aluminium has been done
successfully. The photocatalyst were prepared by intercalation of Al13 onto natural
montmorillonite and then calcined at 500oC. Titania dispersion onto aluminium
pillared montmorillonite was carried out by impregnation method at the theoritic
concentration of 0.4%, 0.8%, 1% and 3% titania. The photocatalyst then
characterized by XRD, porosimetry, SEM and Diffuse Reflectance Visible
methods.Results of characterization showed that the basal spacing and specific
surface area as well as total pore volume were decreased after dispersion of TiO2
on PILM, meanwhile SEM image exhibited that beside in the pores of PILM, the
TiO2 was also dispersed on the surface of PILM. DR UV characterization result
indicated that the band gap of TiO2 dispersed PILM for Ti/PILM 0,8%, Ti/PILM
1% and Ti/PILM 3% was 3.66 eV, 3.19 eV and 3.19 eV respectively.
Photodegradation optimum of methyl orange was found to be at Ti/PILM 1%, pH
10, methyl orange concentration 1.5 M and concentration of photocatalyst 1
gram/litre. The photodegradation follow first order reaction with constan rate of
21.77x10-3 per minutes.
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