期刊
CHEMELECTROCHEM
卷 1, 期 11, 页码 1867-1873出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/celc.201402124
关键词
biotemplates; palladium; supported catalysts; sustainable chemistry; template synthesis
资金
- King Abdullah University of Science and Technology (KAUST) [KUS-I1-003-13]
- National Science Foundation (NSF) Graduate Student Fellowship Program [DGE-1255832]
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 0.6V) 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.
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