TY - JOUR
T1 - Solar-powered electrochemical oxidation of organic compounds coupled with the cathodic production of molecular hydrogen
AU - Park, Hyunwoong
AU - Vecitis, Chad D.
AU - Hoffmann, Michael R.
PY - 2008/8/21
Y1 - 2008/8/21
N2 - A Bi-doped TiO2 anode, which is prepared from a mixed metal oxide coating deposited on Ti metal, is shown to be efficient for conventional water splitting. In this hybrid photovoltaic-electrochemical system, a photovoltaic (PV) cell is used to convert solar light to electricity, which is then used to oxidize a series of phenolic compounds at the semiconductor anode to carbon dioxide with the simultaneous production of molecular hydrogen from water/proton reduction at the stainless steel cathode. Degradation of phenol in the presence of a background NaCl electrolyte produces chlorinated phenols as reaction intermediates, which are subsequently oxidized completely to carbon dioxide and low-molecular weight carboxylic acids. The anodic current efficiency for the complete oxidation of phenolic compounds ranges from 3% to 17%, while the cathodic current efficiency and the energy efficiency for hydrogen gas generation range from 68% to 95% and 30% to 70%, respectively.
AB - A Bi-doped TiO2 anode, which is prepared from a mixed metal oxide coating deposited on Ti metal, is shown to be efficient for conventional water splitting. In this hybrid photovoltaic-electrochemical system, a photovoltaic (PV) cell is used to convert solar light to electricity, which is then used to oxidize a series of phenolic compounds at the semiconductor anode to carbon dioxide with the simultaneous production of molecular hydrogen from water/proton reduction at the stainless steel cathode. Degradation of phenol in the presence of a background NaCl electrolyte produces chlorinated phenols as reaction intermediates, which are subsequently oxidized completely to carbon dioxide and low-molecular weight carboxylic acids. The anodic current efficiency for the complete oxidation of phenolic compounds ranges from 3% to 17%, while the cathodic current efficiency and the energy efficiency for hydrogen gas generation range from 68% to 95% and 30% to 70%, respectively.
UR - http://www.scopus.com/inward/record.url?scp=51049099981&partnerID=8YFLogxK
U2 - 10.1021/jp802807e
DO - 10.1021/jp802807e
M3 - Article
AN - SCOPUS:51049099981
SN - 1089-5639
VL - 112
SP - 7616
EP - 7626
JO - Journal of Physical Chemistry A
JF - Journal of Physical Chemistry A
IS - 33
ER -