Method for reducing carbon dioxide
First Claim
1. A method for reducing carbon dioxide with use of a device for reducing carbon dioxide, the method comprising:
- a step (a) of preparing the device for reducing carbon dioxide, the device comprising;
a cathode chamber;
an anode chamber; and
a solid electrolyte membrane;
wherein;
the cathode chamber comprises a working electrode,the working electrode comprises a metal or a metal compound,the anode chamber comprises a counter electrode,the counter electrode comprises a region formed of a nitride semiconductor on the surface thereof,a first electrolytic solution is held in the cathode chamber,a second electrolytic solution is held in the anode chamber,the working electrode is in contact with the first electrolytic solution,the counter electrode is in contact with the second electrolytic solution,the solid electrolyte membrane is interposed between the cathode chamber and the anode chamber,the first electrolyte solution contains the carbon dioxide,the working electrode is connected to the counter electrode, andan electric source is not interposed electrically between the working electrode and the counter electrode;
a step (b) of irradiating the region with a light having a wavelength of 250 nanometers to 400 nanometers to reduce the carbon dioxide contained in the first electrolyte solution, wherein the working electrode is not irradiated with the light.
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Abstract
The present subject matter provides a method for reducing carbon dioxide with the use of a device for reducing carbon dioxide. The device includes a cathode chamber, an anode chamber and a solid electrolyte membrane. The cathode chamber includes a working electrode which includes a metal or a metal compound. The anode chamber includes a counter electrode which includes a region formed of a nitride semiconductor. First and second electrolytic solutions are held in the cathode and anode chamber, respectively. The working electrode and the counter electrode are in contact with the first and second electrolytic solution, respectively. The solid electrolyte membrane is interposed between the cathode and anode chambers. The first electrolyte solution contains the carbon dioxide. An electric source is not interposed electrically between the working electrode and the counter electrode.
41 Citations
23 Claims
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1. A method for reducing carbon dioxide with use of a device for reducing carbon dioxide, the method comprising:
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a step (a) of preparing the device for reducing carbon dioxide, the device comprising; a cathode chamber; an anode chamber; and a solid electrolyte membrane;
wherein;the cathode chamber comprises a working electrode, the working electrode comprises a metal or a metal compound, the anode chamber comprises a counter electrode, the counter electrode comprises a region formed of a nitride semiconductor on the surface thereof, a first electrolytic solution is held in the cathode chamber, a second electrolytic solution is held in the anode chamber, the working electrode is in contact with the first electrolytic solution, the counter electrode is in contact with the second electrolytic solution, the solid electrolyte membrane is interposed between the cathode chamber and the anode chamber, the first electrolyte solution contains the carbon dioxide, the working electrode is connected to the counter electrode, and an electric source is not interposed electrically between the working electrode and the counter electrode; a step (b) of irradiating the region with a light having a wavelength of 250 nanometers to 400 nanometers to reduce the carbon dioxide contained in the first electrolyte solution, wherein the working electrode is not irradiated with the light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification
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- Resources
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Current AssigneePanasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
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Original AssigneePanasonic Corporation (Panasonic Holdings Corporation)
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InventorsYotsuhashi, Satoshi, Deguchi, Masahiro, Yamada, Yuka
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Primary Examiner(s)Hendricks, Keith
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Assistant Examiner(s)Raphael, Colleen M
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Application NumberUS13/674,809Publication NumberTime in Patent Office519 DaysField of Search205/340US Class Current205/340CPC Class CodesC07C 1/02 from oxides of a carbon pre...C07C 9/04 Methane production by treat...C25B 1/55 PhotoelectrolysisC25B 15/08 Supplying or removing react...C25B 3/25 ReductionC25B 9/17 Cells comprising dimensiona...Y02E 60/36 Hydrogen production from no...
