NDLI: Electrochemical reduction of CO<sub>2</sub> to HCOOH using zinc and cobalt oxide as electrocatalysts

Content Provider	Royal Society of Chemistry (RSC)
Author	Purkait, Mihir Kumar Yadav, Viyyapu Shyam Kumar
Copyright Year	2015
Abstract	The present work studies the effect of a synthesized zinc (Zn) electrocatalyst towards the reduction of CO2 to products electrochemically (RCPE), using cobalt oxide (Co3O4) for water oxidation. The Zn catalyst was prepared using an electrodeposition method, with zinc chloride dihydrate (ZnCl2·2H2O) solution. The synthesized electrocatalyst was characterized by XRD, FTIR and particle size analysis, which confirmed the formation of Zn particles. Electrodes were prepared by depositing the synthesized Zn and Co3O4 on graphite plates, which were used as the cathode and the anode, respectively. The effects of applied voltage with time on the RCPE were studied in carbonates and bicarbonates of sodium and potassium electrolytes. Ultra-fast liquid chromatography (UFLC) was used for the detection of end products from the RCPE. However, HCOOH was the only product formed under all applied conditions. Maximum efficiencies were observed in bicarbonates, rather than carbonates. In KHCO3 electrolyte solution at 1.5 V, maximum Faradaic efficiencies of 78.54% and 78.46% for HCOOH were obtained after 5 and 10 min reaction. Similarly, in NaHCO3 solution, efficiencies of 60.5% and 64.7% after 5 min and 10 min duration were obtained at 2.5 V. The ability of the synthesized electrocatalyst towards the RCPE was explained for all the applied conditions in detail.
Starting Page	7348
Ending Page	7354
Page Count	7
File Format	HTM / HTML PDF
ISSN	11440546
Volume Number	39
Issue Number	9
Journal	New Journal of Chemistry
DOI	10.1039/c5nj01182e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Cobalt oxide Zinc chloride Anode Cathode Electroplating Particle size analysis Zinc Chromatography X-ray crystallography Sodium Electrolyte Graphite Potassium bicarbonate Potassium carbonate
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry Catalysis

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