▎ 摘　　要

Ultrafine and well dispersed CoAuPd nanoparticles grown on a DNAreduced- graphene-oxide (DNA-rGO) composite have been successfully synthesized using a DNA-directedmethod. The resultant CoAuPd/ DNArGO composite exhibits high activity and 100% H2 selectivity toward the dehydrogenation of formic acid without any additive at 298 K.