Abstract
The electrochemical reduction of carbon dioxide under ultrasonic irradiation was investigated with copper electrode in 0.5 M electrolyte. The main products by the electroreduction of under ultrasonic irradiation were methane, formic acid, and carbon monoxide. The faradaic efficiencies for these products formation under ultrasonic irradiation were better than those without ultrasonic irradiation. In contrast, hydrogen formation was depressed by ultrasonic irradiation. Maximum formation efficiencies for methane, formic acid, CO, and ethylene formations were 40% at −1.9 V and 0°C, 27% at −1.5 V and 0°C, 7.7% at −1.9 V and 15°C, and 3.0% at −1.9 V and 15°C under ultrasonic irradiation, respectively. The formations of methane and CO increased as potential decreased with the decreasing potential. The efficiency curve for ethylene formation had a peak at −1.9 V vs. SCE. The formation efficiencies of methane and CO increased as temperature decreased, but the efficiency for hydrogen formation decreased with temperature decreasing under ultrasonic irradiation. © 2000 The Electrochemical Society. All rights reserved.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
