mohammad saquib - Academia.edu (original) (raw)
Electrocatalysis, CO2 mitigation, renewable energy, nanomaterials
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Electrochemical reduction of carbon dioxide is one of the methods which have the capability to re... more Electrochemical reduction of carbon dioxide is one of the methods which have the capability to recycle CO 2 into valuable products for energy and industrial applications. This research article describes about a new electrocatalyst Breduced graphene oxide supported gold nanoparticles^ for selective electro-chemical conversion of carbon dioxide to carbon monoxide. The main aim for conversion of CO 2 to CO lies in the fact that the latter is an important component of syn gas (a mixture of hydrogen and carbon monoxide), which is then converted into liquid fuel via well-known industrial process called Fischer-Tropsch process. In this work, we have synthesized different composites of the gold nanoparticles supported on defective reduced graphene oxide to evaluate the catalytic activity of reduced graphene oxide (RGO)-supported gold nano-particles and the role of defective RGO support towards the electrochemical reduction of CO 2. Electrochemical and impedance measurements demonstrate that higher concentration of gold nanoparticles on the graphene support led to remarkable decrease in the onset potential of 240 mV and increase in the current density for CO 2 reduction. Lower impedance and Tafel slope values also clearly support our findings for the better performance of RGOAu than bare Au for CO 2 reduction.
Electrochemical reduction of carbon dioxide is one of the methods which have the capability to re... more Electrochemical reduction of carbon dioxide is one of the methods which have the capability to recycle CO 2 into valuable products for energy and industrial applications. This research article describes about a new electrocatalyst Breduced graphene oxide supported gold nanoparticles^ for selective electro-chemical conversion of carbon dioxide to carbon monoxide. The main aim for conversion of CO 2 to CO lies in the fact that the latter is an important component of syn gas (a mixture of hydrogen and carbon monoxide), which is then converted into liquid fuel via well-known industrial process called Fischer-Tropsch process. In this work, we have synthesized different composites of the gold nanoparticles supported on defective reduced graphene oxide to evaluate the catalytic activity of reduced graphene oxide (RGO)-supported gold nano-particles and the role of defective RGO support towards the electrochemical reduction of CO 2. Electrochemical and impedance measurements demonstrate that higher concentration of gold nanoparticles on the graphene support led to remarkable decrease in the onset potential of 240 mV and increase in the current density for CO 2 reduction. Lower impedance and Tafel slope values also clearly support our findings for the better performance of RGOAu than bare Au for CO 2 reduction.