With our study we can concluded that, amphiphilic dendrimer can be well suited for the formation of metal nanopartiles viz., Ag, Pd and PtNPs. Based on the performance of APPI-G2 it was inferred that, other types of dendrimers which having similar properties could also be exploited for the same application. As these nanocatalysts selectively reduce the methyl orange, the same can also be extended to chemo selective reduction of azo dyes having different reducible groups under mild conditions.