11.Apr.2025
Vehicle emissions of carbon dioxide significantly contribute to greenhouse gases. Recycling this CO₂ into valuable hydrocarbon products enhances vehicle mileage while reducing environmental impact, adding value to fuel consumption. This research aims to utilize the electrochemical method for conversion of CO2 to alcohols using nano-copper (Cu), silver (Ag), graphite (C), and their composites. Pure graphite, nano-copper, silver, and their composites were evaluated for the performance in CO₂ reduction. The working solution was 0.1 M potassium bicarbonate (KHCO₃) saturated with CO2 in H-type cell. The produced alcohols were continuously monitored to assess the efficiency of the electrochemical conversion process. Nano-copper electrodes showed high Faradaic efficiencies for methanol (~ 100%), ethanol (~ 100%), and hydrogen reduction. The Cu/graphite composites revealed enhanced performance, benefiting from the synergy between the CO₂ adsorption properties of graphite and the catalytic activity of copper. Mixed Cu-Ag systems, on the other hand, showed distinct electrochemical behavior through the CO-pathway reaction steps. The electrodes of graphite, copper, and their composites were characterized for their surface morphologies, crystallinity, and functional groups. X-ray diffraction (XRD) confirmed the presence of copper phases in the E21Cu79C composite, and scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) analyses provided an uneven amorphous surface with major -OH groups that can enhance the adsorption of CO2 to these electrodes. The addition of copper to graphite in E21Cu79C electrode indicated a positive increase of 4% in reduction potential from pure graphite. Pure graphite electrode provided a current density of 27.8 mA/cm2, whereas Cu/graphite (E21Cu79C) demonstrated an increase of 12%. This study highlights the importance of electrode composition in optimizing CO₂ electro-reduction, offering insights into the development of more efficient catalysts for the sustainable production of alcohols from CO₂.Click here for Link
Vehicle emissions of carbon dioxide significantly contribute to greenhouse gases. Recycling this CO₂ into valuable hydrocarbon products enhances vehicle mileage while reducing environmental impact, adding value to fuel consumption. This research aims to utilize the electrochemical method for conversion of CO2 to alcohols using nano-copper (Cu), silver (Ag), graphite (C), and their composites. Pure graphite, nano-copper, silver, and their composites were evaluated for the performance in CO₂ reduction. The working solution was 0.1 M potassium bicarbonate (KHCO₃) saturated with CO2 in H-type cell. The produced alcohols were continuously monitored to assess the efficiency of the electrochemical conversion process. Nano-copper electrodes showed high Faradaic efficiencies for methanol (~ 100%), ethanol (~ 100%), and hydrogen reduction. The Cu/graphite composites revealed enhanced performance, benefiting from the synergy between the CO₂ adsorption properties of graphite and the catalytic activity of copper. Mixed Cu-Ag systems, on the other hand, showed distinct electrochemical behavior through the CO-pathway reaction steps. The electrodes of graphite, copper, and their composites were characterized for their surface morphologies, crystallinity, and functional groups. X-ray diffraction (XRD) confirmed the presence of copper phases in the E21Cu79C composite, and scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) analyses provided an uneven amorphous surface with major -OH groups that can enhance the adsorption of CO2 to these electrodes. The addition of copper to graphite in E21Cu79C electrode indicated a positive increase of 4% in reduction potential from pure graphite. Pure graphite electrode provided a current density of 27.8 mA/cm2, whereas Cu/graphite (E21Cu79C) demonstrated an increase of 12%. This study highlights the importance of electrode composition in optimizing CO₂ electro-reduction, offering insights into the development of more efficient catalysts for the sustainable production of alcohols from CO₂.
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15.Oct.2025
24.Aug.2025
أنا طالبة في الهندسة الصناعية, اختياري لهذا التخصص كان بناءً على أهميته الكبيرة كمهنة في الحاضر والمستقبل ... رغد بركات
الهندسة الصناعية تساعدك على اتخاذ قرارات أفضل، وتعطي أشكالا أخرى من مبادئ الهندسة بشكل عملي وعلمي في آن. ... محمود صلاح
قسم الهندسة الكيميائية قسم جميل جدا تعلمت فيه الكثير ومما تعلمته فيه جدية العمل وروح الفريق الواحد .. ... رغد الشويكي