followed by stirring for 60 mins at 27 u00b0 c the mixture is filtered washed with double distilled water and ethanol followed by drying at 70 u00b0 c for 24 h and grinding a beaker is charged 2 g of go prepared by das et al d p das r k bank j das p mohapatra and k m panda rsc adv 2 2012 7377 it is kept in the air oven at 70 u00b0 c for 24 h preparation of 1 wt rgo ag 3 po 4 rgo agp conditions go 0 0168 g silver nitrate 2 04 g nh 4 2 hpo 4 0 54 g a beaker is charged with 0 0168 g of pretreated go graphene oxide as in example 2 in 100 ml distilled water the suspension is sonicated for 45 mins to get a homogeneous transparent dispersion a weighed amount of 2 04 g of silver nitrate is added to the above suspension and sonicated for another 15 mins a stoichimetric quantity 0 54 g of di ammonium hydrogen phosphate in 40 ml water is added to the above suspension followed by stirring for 1 h the mixture is kept under visible light visl illumination for.