Carbonate-coordinated cobalt co-catalyzed BiVO4/WO3 composite photoanode tailored for \CO2\ reduction to fuels
By Jin Hyun Kim and Ganesan Magesh and Hyun Joon Kang and Marimuthu Banu and Ju Hun Kim and Jinwoo Lee and Jae Sung Lee
Published in Nano Energy
NULL
2015
Abstract
We report here that cobalt carbonate (Co-Ci) is a tailored oxygen evolution electrocatalyst (OEC) from water on BiVO4/WO3 composite photoanode to drive photoelectrochemical reduction of \CO2\ to fuels on a Cu cathode. For water oxidation, Co-Ci/BiVO4/WO3 performed best in CO2-saturated \KHCO3\ (KCi, pH 7) electrolyte recording an exceptional photocurrent of 3.5 mA/cm2 at 1.23 \VRHE\ under 1 sun illumination, and an onset potential of 0.2 VRHE. In the photoanode-driven \CO2\ reduction, the Co-Ci/BiVO4/WO3 (photoanode)
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