Abstract: The heteropolyacid nano enviromental composite materials have good application prospect in photoelectric catalysis and biosensor domain. The synthesis method is simple，enviromental，and has good catalytic performance. With solely polyoxometalates（POMs） as reducing，bridging and encapsulating molecules， obtained Ag nanoparticles NPs- decorated carbon nanotubes （CNTs）.The modified electrode resisted the methanol interference，and had very high electrocatalytic oxygen reduction activity；The synthesis of metal nanostructures Au NPs，Pt NPs，Pd NPs and Ag nanonet（NN）- decorated graphene nanosheets（GNSs） have been reported，they can be used as good biological sensing materials and fuel cell electrode materials. Under high temperature with NH3，Ag nanoparticles（NPs） @POMs-decorated graphdiyne was prepared，realized non-metal high electrocatalytic oxygen reduction activity.

Key words: photoelectrocatalysis, nanohybrids, polyoxometalates, noble metal, graphene, graphdiyne