Solar-powered production of molecular hydrogen from water

Park Hyunwoong; Chad D. Vecitis; Choi Wonyong; Oleh Weres; Michael R. Hoffmann

doi:10.1021/jp710723p

Solar-powered production of molecular hydrogen from water

Park Hyunwoong, Chad D. Vecitis, Choi Wonyong, Oleh Weres, Michael R. Hoffmann

School of Energy Engineering

Research output: Contribution to journal › Article › peer-review

70 Scopus citations

Abstract

Electrochemical water splitting powered by conventional electricity or photovoltaic arrays produces molecular hydrogen at the cathode, while organic compound oxidation under mild conditions takes place at the anode in competition with the production of oxygen. An electrolytic cell, which is based on the coupling of bismuthdoped titanium dioxide anodes (BiO_x-TiO ₂) with stainless steel (SS) cathodes, is characterized in terms of hydrogen production efficiency and organic compound degradation. In the solar-powered photovoltaic (PV)-electrochemical system, the production of molecular oxygen at the anode is suppressed by the simultaneous oxidation and mineralization of organic compounds dissolved in water. In addition, the anodic oxidation of organic substrates has a synergistic effect on hydrogen production at the cathode that results in a 53% increase in the energy efficiency for H₂ generation at circum-neutral pH in the presence of dilute electrolyte solutions.

Original language	English
Pages (from-to)	885-889
Number of pages	5
Journal	Journal of Physical Chemistry C
Volume	112
Issue number	4
DOIs	https://doi.org/10.1021/jp710723p
State	Published - 31 Jan 2008

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abstract = "Electrochemical water splitting powered by conventional electricity or photovoltaic arrays produces molecular hydrogen at the cathode, while organic compound oxidation under mild conditions takes place at the anode in competition with the production of oxygen. An electrolytic cell, which is based on the coupling of bismuthdoped titanium dioxide anodes (BiOx-TiO 2) with stainless steel (SS) cathodes, is characterized in terms of hydrogen production efficiency and organic compound degradation. In the solar-powered photovoltaic (PV)-electrochemical system, the production of molecular oxygen at the anode is suppressed by the simultaneous oxidation and mineralization of organic compounds dissolved in water. In addition, the anodic oxidation of organic substrates has a synergistic effect on hydrogen production at the cathode that results in a 53% increase in the energy efficiency for H2 generation at circum-neutral pH in the presence of dilute electrolyte solutions.",

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AU - Hyunwoong, Park

AU - Vecitis, Chad D.

AU - Wonyong, Choi

AU - Weres, Oleh

AU - Hoffmann, Michael R.

PY - 2008/1/31

Y1 - 2008/1/31

N2 - Electrochemical water splitting powered by conventional electricity or photovoltaic arrays produces molecular hydrogen at the cathode, while organic compound oxidation under mild conditions takes place at the anode in competition with the production of oxygen. An electrolytic cell, which is based on the coupling of bismuthdoped titanium dioxide anodes (BiOx-TiO 2) with stainless steel (SS) cathodes, is characterized in terms of hydrogen production efficiency and organic compound degradation. In the solar-powered photovoltaic (PV)-electrochemical system, the production of molecular oxygen at the anode is suppressed by the simultaneous oxidation and mineralization of organic compounds dissolved in water. In addition, the anodic oxidation of organic substrates has a synergistic effect on hydrogen production at the cathode that results in a 53% increase in the energy efficiency for H2 generation at circum-neutral pH in the presence of dilute electrolyte solutions.

AB - Electrochemical water splitting powered by conventional electricity or photovoltaic arrays produces molecular hydrogen at the cathode, while organic compound oxidation under mild conditions takes place at the anode in competition with the production of oxygen. An electrolytic cell, which is based on the coupling of bismuthdoped titanium dioxide anodes (BiOx-TiO 2) with stainless steel (SS) cathodes, is characterized in terms of hydrogen production efficiency and organic compound degradation. In the solar-powered photovoltaic (PV)-electrochemical system, the production of molecular oxygen at the anode is suppressed by the simultaneous oxidation and mineralization of organic compounds dissolved in water. In addition, the anodic oxidation of organic substrates has a synergistic effect on hydrogen production at the cathode that results in a 53% increase in the energy efficiency for H2 generation at circum-neutral pH in the presence of dilute electrolyte solutions.

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Solar-powered production of molecular hydrogen from water

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