Note that noticeable background currents were observed in the above cyclic voltammograms due to the unavoidable oxygen and carbon component within the porous GDL substrate. Switching the substrate to a non-porous one, such as glass, renders a flat baseline and shows consistency with the above ...
When the oxygen is determined by gas chromatography, formation of CO 2 can be suppressed by adding a 0.5% Si-1.5% Ni Cu bath-alloy together with the copper sample or by inserting a spectrographically pure carbon rod into the graphite crucible used for the fusion. When the oxygen is ...
Copper can be found free in nature (although not as commonly today). A naturally forming “patina” forms on copper in the environment (e.g., Statue of Liberty in NewYork City). The “patina” is commonly copper carbonate (from reaction with water and carbon dioxide). This thin copper ...
In spite of numerous works in the field of chemical valorization of carbon dioxide into methanol, the nature of high activity of Cu/ZnO catalysts, including the reaction mechanism and the structure of the catalyst active site, remains the subject of inte
It has been reported that copper melted in a graphite crucible at high temperature will give off its oxygen content mainly as CO and partially as CO 2. Thus if oxygen in copper is determined by means of apparatus designed to measure only CO as the reaction product, the results are obviously...
For internal water cooling systems which are airtight, the corrosion of the hollow copper conductor can be prevented through keeping foreign oxygen and carbon dioxide from entering the system, and the amount of oxygen in the internal water can be lowered by blowing high purity nitrogen. For ...
K. et al. Origin of the overpotential for oxygen reduction at a fuel-cell cathode. J. Phys. Chem. B 108, 17886–17892 (2004). Article CAS Google Scholar Schouten, K. J. P., Qin, Z., Pérez Gallent, E. & Koper, M. T. Two pathways for the formation of ethylene in CO ...
W. Electroreduction of carbon monoxide to liquid fuel on oxide-derived nanocrystalline copper. Nature 508, 504–507 (2014). Article CAS PubMed Google Scholar Subbaraman, R. et al. Enhancing hydrogen evolution activity in water splitting by tailoring Li+–Ni(OH)2–Pt interfaces. Science 334,...
Copper catalysts modified with tin have been demonstrated to be selective for the electroreduction of carbon dioxide to carbon monoxide. However, such catalysts require the precise control of tin loading amount. Here, we develop a copper/tin-oxide catalyst with dominant tin oxide surface being formed...
The immoderate burning of fossil fuels along with the wanton emission of carbon dioxide (CO2) into atmosphere has aroused the global warming effect1,2,3,4. Electrocatalytic CO2conversion (CO2RR), powered by intermittent renewable electricity, provides an unprecedented possibility to address this glo...