Synthesis of highly dispersed and active palladium/carbon nanofiber catalyst for formic acid electrooxidation

▶ Through simple pH adjustment of the trisodium citrate stabilized Pd colloidal, the Pd nanoparticles with an average particle size of ca. 3.8 nm can be highly dispersed on the CNF support although the trisodium citrate/PdCl2 ratio is one. ▶ The obtained Pd/CNF catalyst exhibits a good catalytic activity and stability for formic acid oxidation. ▶ The process developed in this work is demonstrated to be an attractive approach to synthesize highly dispersed noble metal nanoparticles onto support materials for fuel cell catalysts.