@article{f7d9ed3d7b6a407a8764b62b0d978334,
title = "Supportless, Bismuth-Modified Palladium Nanotubes with Improved Activity and Stability for Formic Acid Oxidation",
abstract = "Palladium nanotubes (PdNTs) were synthesized by templated vapor deposition and investigated for formic acid electrooxidation. Annealed PdNTs are 2.4 times more active (2.19 mA/cm2) than commercial carbon-supported palladium (0.91 mA/cm2) at 0.3 V vs RHE. Bismuth modification improved nanotube performance over 4 times (3.75 mA/cm2) vs Pd/C and nearly 2 times vs unmodified PdNTs. A surface Bi coverage of 80% results in optimal site-specific activity by drastically reducing surface-poisoning CO generation during formic acid electrooxidation. The Bi-modified PdNTs are exceptionally stable, maintaining 2 times the area-normalized current density as Pd/C after 24 h at 0.2 V vs RHE. We attribute the enhanced activity and stability of the nanotube catalysts to the presence of highly coordinated surfaces, mimicking a flat polycrystal while retaining high surface area geometry.",
keywords = "anodic alumina, bismuth adatom, chemical vapor deposition, formic acid oxidation, palladium nanotube, templated synthesis",
author = "Atkinson, {Robert W.} and {St. John}, Samuel and Ondrej Dyck and Unocic, {Kinga A.} and Unocic, {Raymond R.} and Burke, {Colten S.} and Cisco, {Joshua W.} and Rice, {Cynthia A.} and Zawodzinski, {Thomas A.} and Papandrew, {Alexander B.}",
note = "Publisher Copyright: {\textcopyright} 2015 American Chemical Society.",
year = "2015",
month = jul,
day = "22",
doi = "10.1021/acscatal.5b01239",
language = "English",
volume = "5",
pages = "5154--5163",
journal = "ACS Catalysis",
issn = "2155-5435",
publisher = "American Chemical Society",
number = "9",
}