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|Title: ||Oxygen reduction on chemically heterogeneous iron-containing nanoporous carbon: the effects of specific surface functionalities|
|Authors: ||Seredych, Mykola|
Biggs, Mark J.
Bandosz, Teresa J.
|Keywords: ||Oxygen reduction reaction|
|Issue Date: ||2016|
|Publisher: ||© Elsevier|
|Citation: ||SEREDYCH, M., BIGGS, M.J. and BANDOSZ, T.J., 2016. Oxygen reduction on chemically heterogeneous iron-containing nanoporous carbon: The effects of specific surface functionalities. Microporous and Mesoporous Materials, 221, pp. 137-149.|
|Abstract: ||Synthetic activated carbon containing iron and sulfur heteroatoms, obtained from polystyrene sulfonic acid-based organic salt, and commercial wood-based carbon containing phosphorous were tested as
catalysts for oxygen reduction reactions. The carbons were characterized using adsorption of nitrogen, TA-MS, FTIR, XRD, XPS, potentiometric titration, SEM/EDX, and HR-TEM microscopy. The introduction of
iron to the carbon resulted a marked electrocatalytic activity for oxygen reduction reaction (ORR) in alkaline medium. A current density was higher than that on commonly used platinum modified carbon
and number of electron transfer (~4e-) indicated a high ORR efficiency. This was accompanied by a high tolerance to methanol oxidation and a good long-term stability after 1500 potential cycles. The extensive
surface characterization indicated the fast O2 adsorption and charge transfer was owed to the surface hydrophobicity, small pores and conductivity. The synergistic effect of porosity and specific iron species
containing sulfur lead to high ORR activity and high kinetic current densities.|
|Description: ||This paper is in closed access.|
|Publisher Link: ||http://dx.doi.org/10.1016/j.micromeso.2015.09.032|
|Appears in Collections:||Closed Access (Chemistry)|
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