Selective catalysts for the hydrogen oxidation and oxygen reduction reactions by patterning of platinum with calix[4]arene molecules

2010 ◽  
Vol 9 (12) ◽  
pp. 998-1003 ◽  
Author(s):  
Bostjan Genorio ◽  
Dusan Strmcnik ◽  
Ram Subbaraman ◽  
Dusan Tripkovic ◽  
Goran Karapetrov ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Hydrogen Oxidation ◽  
Reduction Reactions ◽  
Oxygen Reduction Reactions

scholarly journals Hydrogen Oxidation and Oxygen Reduction Reactions on an OsRu-Based Electrocatalyst Synthesized by Microwave Irradiation

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5692
Author(s):  
Ángela Selva-Ochoa ◽  
Javier Su-Gallegos ◽  
P. J. Sebastian ◽  
Lorena Magallón-Cacho ◽  
Edgar Borja-Arco
Keyword(s):  
Fuel Cells ◽  
Microwave Irradiation ◽  
Oxygen Reduction ◽  
Direct Methanol Fuel Cells ◽  
Hydrogen Oxidation ◽  
Linear Sweep Voltammetry ◽  
Rotating Disk ◽  
Rotating Disk Electrode ◽  
Reduction Reactions ◽  
Oxygen Reduction Reactions

This work presents an OsRu-based electrocatalyst synthesis, by a rapid and efficient method through microwave irradiation. The outstanding electrocatalyst shows a dual catalytic activity, demonstrating both hydrogen oxidation and oxygen reduction reactions. The material is structural and morphologically characterized by FT-IR, X-ray diffraction, EDS, and SEM, indicating nanoparticulated Os and Ru metallic phases with a crystallite size of ∼6 nm, calculated by the Scherrer equation. The metal nanoparticles are apparently deposited on a carbonaceous sponge-like morphology structure. Its electrochemical characterization is performed in 0.5 M H2SO4 by the rotating disk electrode technique, employing cyclic and linear sweep voltammetry. Two different ink treatments have been studied to improve the obtained polarization curves. The material was also tested in the presence of methanol for the oxygen reduction reaction, showing an important resistance to this contaminant, making it viable for its use in direct methanol fuel cells (DMFCs) as a cathode and in polymer electrolyte fuel cells (PEMFCs) as an anode as much as a cathode.

Rational prediction of multifunctional bilayer single atom catalysts for the hydrogen evolution, oxygen evolution and oxygen reduction reactions

Nanoscale ◽  
2020 ◽  
Vol 12 (39) ◽  
pp. 20413-20424
Author(s):  
Riming Hu ◽  
Yongcheng Li ◽  
Fuhe Wang ◽  
Jiaxiang Shang
Keyword(s):  
Oxygen Reduction ◽  
Hydrogen Evolution ◽  
Oxygen Evolution ◽  
Single Atom ◽  
Reduction Reactions ◽  
Oxygen Reduction Reactions

Bilayer single atom catalysts can serve as promising multifunctional electrocatalysts for the HER, ORR, and OER.

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