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1. (WO2017034523) PHOTOELECTROCHEMICAL METHODS FOR CONVERTING CARBON DIOXIDE INTO CARBON-CONTAINING REACTION PRODUCT

Pub. No.:    WO/2017/034523    International Application No.:    PCT/US2015/046352
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Sat Aug 22 01:59:59 CEST 2015
IPC: C25B 3/04
Applicants: C2F, INC.
Inventors: GUARNIERI, Frank
CAMP, Nick, R.
Title: PHOTOELECTROCHEMICAL METHODS FOR CONVERTING CARBON DIOXIDE INTO CARBON-CONTAINING REACTION PRODUCT
Abstract:
A method comprising: irradiating ultraviolet light on at least one solid composite electrode comprising at least one semiconductor material which is in contact with at least one liquid solution comprising carbon dioxide; switching the state of the solid composite electrode between an open circuit mode and a closed circuit mode during the irradiating step; wherein the carbon dioxide is reduced to form an elemental carbon-containing reaction product. Carbon dioxide is photoelectrochemically converted to an elemental carbon-containing reaction product including a carbon rich material which is at least 90 wt.% carbon. The form of the carbon material can be controlled by the time period in the switching step.