With levels of green house gases increasing in the earth’s atmosphere, strategies how to deal with this problem are in high demand. One of the most promising of them is direct use of carbon dioxide (CO2) as feed for producing valuable chemicals (methanol, methane, ethylene, …). A paper recently published by Hossain et al. in Journal of Nanomaterials, vol. 2014 presents the experimental investigation of copper loaded carbon nanotubes (CNTs) electrocatalysts for the electrochemical reduction of CO2. The electrochemical experiments were performed with a PGSTAT 302 from Metrohm Autolab.
Electrochemical reduction is one of most promising methods to prevent emission of CO2 into the atmosphere as it
- uses CO2 and water as feed
- produces valuable chemicals such as such as methanol, methane, ethylene, formic acid, and synthesis gas
- operates at room temperature and pressure
- provides possibility of using renewable sources of energy for the process
Linear sweep voltammetry and chronoamperometry were used to investigate the activity of the as-prepared catalysts for the electrochemical reduction of CO2.