Ever since the middle of the 20th century, with the development of industrial revolutions, the concentration of CO2 in the atmosphere has been constantly increasing. Climate change is becoming an increasingly pressing issue, the main reason for which is CO2. In recent decades, scientists have increasingly warned that reducing CO2 emissions is essential for curbing climate change. An interesting approach to reducing CO2 emissions is electrochemical CO2 reduction. A promising feature of this method is that, in addition to emitting CO2, we obtain as a product chemicals and fuels in which energy is stored. Because CO2 is a stable molecule and several problems arise in its reduction, it is necessary to develop a robust and selective catalyst for its effective reduction. I myself focused on catalysts based on nitrogen-doped graphene catalysts, which showed good activity to reduce CO2. In the first part of the thesis, I described graphene, nitrogen-doped graphene, X-ray photoelectron spectroscopy and presented CO2 reduction and its barriers. In the second part, I described catalysts with nitrogen-doped graphene, which have led the reduction to the products such as: formate, ethanol, ethene and carbon monoxide.
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