Premium
Biotemplated Palladium Catalysts Can Be Stabilized on Different Support Materials
Author(s) -
Yates Matthew D.,
Logan Bruce E.
Publication year - 2014
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201402124
Subject(s) - catalysis , graphite , materials science , palladium , polydimethylsiloxane , electrochemistry , electrode , carbon fibers , polyaniline , nafion , chemical engineering , composite material , composite number , polymer , chemistry , organic chemistry , engineering , polymerization
Sustainably biotemplated palladium catalysts generated on different carbon‐based support materials are examined for durability under electrochemical (oxidative) and mechanical‐stress conditions. Biotemplated catalysts on carbon paper under both stresses retain 95 % (at 0.6 V) of the initial catalytic activity as opposed to 70 % for carbon cloth and 60 % for graphite. Graphite electrodes retain 95 % of initial catalytic activity under a single stress. Using electrodeposited polyaniline (PANI) and polydimethylsiloxane binder increases the current density after the stress tests by 22 %, as opposed to a 30 % decrease for Nafion. PANI‐coated electrodes retain more activity than carbon‐paper electrodes under elevated mechanical (94 versus 70 %) or increased oxidative (175 versus 62 %) stress. Biotemplated catalytic electrodes may be useful alternatives to synthetically produce catalysts for some electrochemical applications.