Microbial synthesis of highly dispersed PdAu alloy for enhanced electrocatalysis

Science Advances  30 Sep 2016:
Vol. 2, no. 9, e1600858
DOI: 10.1126/sciadv.1600858

You are currently viewing the abstract.

View Full Text


Biosynthesis based on the reducing capacity of electrochemically active bacteria is frequently used in the reduction of metal ions into nanoparticles as an eco-friendly way to recycle metal resources. However, those bionanoparticles cannot be used directly as electrocatalysts because of the poor conductivity of cell substrates. This problem was solved by a hydrothermal reaction, which also contributes to the heteroatom doping and alloying between Pd and Au. With the protection of graphene, the aggregation of nanoparticles was successfully avoided, and the porous structure was maintained, resulting in better electrocatalytic activity and durability than commercial Pd/C under both alkaline (CH3CH2OH, 6.15-fold of mass activity) and acidic (HCOOH, 6.58-fold of mass activity) conditions. The strategy developed in this work opens up a horizon into designing electrocatalysts through fully utilizing the abundant resources in nature.

  • Electrochemically active bacteria
  • Shewanella oneidensis MR-1
  • green synthesis
  • palladium
  • gold
  • hydrothermal reaction
  • ethanol
  • formic acid
  • fuel cell
  • electrocatalyst

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.

View Full Text

More Like This