Open AccessMicrobial synthesis of highly dispersed PdAu alloy for enhanced electrocatalysis
Author(s) -
Jiawei Liu,
Yue Zheng,
Zilan Hong,
Kai Cai,
Feng Zhao,
Heyou Han
Publication year - 2016
Publication title -
science advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.928
H-Index - 146
ISSN - 2375-2548
DOI - 10.1126/sciadv.1600858
Subject(s) - electrocatalyst , heteroatom , materials science , alloy , nanoparticle , chemical engineering , metal , graphene , nanomaterials , porosity , doping , hydrothermal circulation , catalysis , nanotechnology , chemistry , electrode , electrochemistry , metallurgy , composite material , organic chemistry , engineering , ring (chemistry) , optoelectronics
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.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom