of 10 vol methanol the h 2 liberated is observed to be 4510 0 u03bcmol using 0 02 g of catalyst in 3 h of light illumination photocatalytic degradation of methyl orange is studied using sunlight as the energy source prior to the start of light experiment dark adsorption experiments are carried out for 30 min under continuous stirring for catalytic measurement a 100 ml flask is charged with 0 05 g of catalyst in 20 ml of 100 ppm methyl orange solution at 38 u00b0 c it is then analysed by a uv vis spectrophotometer at 500 nm wave length the complete degradation of the dye is achieved in 120 min using 0 05 g of catalyst conditions catalyst nstp 0 05 g methyl orange 20 ml 100 ppm light source sunlight photocatalytic degradation of methyl orange is studied using sunlight as the energy source prior to the start of light experiment dark adsorption experiments are carried out for 30 min under continuous stirring for catalytic measurement a 100 ml flask is charged with 0 05 g of catalyst in 20 ml of 100 ppm methyl orange solution at 40 u00b0 c it is then analysed by a uv vis spectrophotometer at 500 nm wave length the complete degradation of the dye is achieved in 90 min using 0 05 g of catalyst photocatalytic dye degradation over ruthenium bipyridyl complex intercalated n doped titania pillared montmorillonite conditions catalyst rntp.