Electrochemical Reduction of Carbon Dioxide on Stainless Steel Electrode in Acetonitrile

Wei Xin Lv; Rui Zhang; Peng Ran Gao; Chun Xia Gong; Li Xu Lei

doi:10.4028/www.scientific.net/AMR.807-809.1322

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 807-809Electrochemical Reduction of Carbon Dioxide on...

Electrochemical Reduction of Carbon Dioxide on Stainless Steel Electrode in Acetonitrile

Abstract:

Electrochemical reduction of carbon dioxide (CO₂) to useful organic compounds is of great significance to decrease CO₂ emission. The electrochemical reduction of CO₂ is carried out in acetonitrile with tetrabutylammonium perchlorate as the electrolyte on a stainless steel cathode in a single cell; by using a sacrificial zinc anode, the product is zinc oxalate when the cathode potential is between 2.5 V and 3.5 V vs. Ag rod electrode. When the potential is less than 3.5 V, acetonitrile is decomposed, and the product is mainly zinc cyanide; when it is higher than 2.5 V, the main product is a basic zinc carbonate. Therefore, only when the cathode potential is in a proper range can CO₂ molecule obtain an electron and dimerize to form C₂O₄², which combines Zn²⁺ from the anode to form zinc oxalate.

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Periodical:

Advanced Materials Research (Volumes 807-809)

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1322-1325

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.807-809.1322

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Online since:

September 2013

Authors:

Wei Xin Lv, Rui Zhang, Peng Ran Gao, Chun Xia Gong, Li Xu Lei

Keywords:

Carbon Dioxide, Electrochemical Reduction, Sacrificial Anode, Zinc Oxalate

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