Synergetic nanoporous Mn–Ru oxides as efficient electrocatalysts for the oxygen reduction reaction

2017 ◽  
Vol 41 (16) ◽  
pp. 8196-8202 ◽  
Author(s):  
Mohamed B. Zakaria ◽  
Toyohiro Chikyow
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Mixed Oxides ◽  
Reduction Reaction ◽  
Electrocatalytic Reduction ◽  
Similar Morphology

Nanoporous Mn–Ru mixed oxides were derived from Mn–Ru CP nanocubes with a similar morphology through annealing in air at 400 degree for effecient electrocatalytic reduction of oxygen.

Palladium copper nanosponges for electrocatalytic reduction of oxygen and glucose detection

2015 ◽  
Vol 3 (18) ◽  
pp. 9675-9681 ◽  
Author(s):  
Wen-Ping Wu ◽  
Arun Prakash Periasamy ◽  
Guan-Lin Lin ◽  
Zih-Yu Shih ◽  
Huan-Tsung Chang
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
High Catalytic Activity ◽  
Glucose Detection ◽  
Cathode Catalyst ◽  
Electrocatalytic Reduction ◽  
One Pot

One-pot synthesized PdCu nanosponges (NSs) are separately used as a cathode catalyst for the oxygen reduction reaction in alkaline media and for enzymeless detection of glucose with high catalytic activity, stability, and durability.

Solvothermal synthesis of magnetic copper nitride nanocubes with highly electrocatalytic reduction properties

RSC Advances ◽  
2014 ◽  
Vol 4 (27) ◽  
pp. 14206-14209 ◽  
Author(s):  
Pinxian Xi ◽  
Zhihong Xu ◽  
Daqiang Gao ◽  
Fengjuan Chen ◽  
Desheng Xue ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Solvothermal Synthesis ◽  
Reduction Reaction ◽  
Electrocatalytic Reduction ◽  
Copper Nitride ◽  
Nitrobenzene Reduction

Copper nitride (Cu3N) nanocubes prepared by an organic solvothermal approach exhibit excellent electrocatalytic activity toward the oxygen reduction reaction (ORR) and nitrobenzene reduction (NBR).

scholarly journals Decoupling the roles of carbon and metal oxides on the electrocatalytic reduction of oxygen on La1−xSrxCoO3−δ perovskite composite electrodes

2019 ◽  
Vol 21 (6) ◽  
pp. 3327-3338 ◽  
Author(s):  
J. Tyler Mefford ◽  
Aleksandr A. Kurilovich ◽  
Jennette Saunders ◽  
William G. Hardin ◽  
Artem M. Abakumov ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Metal Oxides ◽  
Oxygen Reduction ◽  
Perovskite Oxides ◽  
Reduction Reaction ◽  
Composite Electrodes ◽  
Electrocatalytic Reduction ◽  
Microkinetic Modeling ◽  
Carbon Additives

Experiment and microkinetic modeling decouple the synergistic roles of La1−xSrxCoO3−δ perovskite oxides and carbon additives during the oxygen reduction reaction.

N and S Co-doped Ordered Mesoporous Carbon: An Efficient Electrocatalyst for Oxygen Reduction Reaction in Microbial Fuel Cells

2020 ◽  
Vol 16 (4) ◽  
pp. 625-638
Author(s):  
Leila Samiee ◽  
Sedigheh Sadegh Hassani
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Microbial Fuel Cells ◽  
Carbon Materials ◽  
Reduction Reaction ◽  
Carbon Substrate ◽  
Promising Candidate ◽  
X Ray ◽  
Carbon Framework ◽  
Co Doped

Background: Porous carbon materials are promising candidate supports for various applications. In a number of these applications, doping of the carbon framework with heteroatoms provides a facile route to readily tune the carbon properties. The oxygen reduction reaction (ORR), where the reaction can be catalyzed without precious metals is one of the common applications for the heteroatom-doped carbons. Therefore, heteroatom doped catalysts might have a promising potential as a cathode in Microbial fuel cells (MFCs). MFCs have a good potential to produce electricity from biological oxidization of wastes at the anode and chemical reduction at the cathode. To the best of our knowledge, no studies have been yet reported on utilizing Sulfur trioxide pyridine (STP) and CMK-3 for the preparation of (N and S) doped ordered porous carbon materials. The presence of highly ordered mesostructured and the synergistic effect of N and S atoms with specific structures enhance the oxygen adsorption due to improving the electrocatalytic activity. So the optimal catalyst, with significant stability and excellent tolerance of methanol crossover can be a promising candidate for even other storage and conversion devices. Methods: The physico-chemical properties of the prepared samples were determined by Small Angle X-ray Diffraction (SAXRD), N2 sorption-desorption, Transmission Electron Microscopy (TEM), Field Emission Scanning Electron Microscopy (FESEM) and X-ray Photoelectron Spectroscopy (XPS). The prepared samples were further applied for oxygen reduction reaction (ORR) and the optimal cathode was tested with the Microbial Fuel Cell (MFC) system. Furthermore, according to structural analysis, The HRTEM, and SAXRD results confirmed the formation of well-ordered hexagonal (p6mm) arrays of mesopores in the direction of (100). The EDS and XPS approved that N and S were successfully doped into the CMK-3 carbon framework. Results: Among all the studied CMK-3 based catalysts, the catalyst prepared by STP precursor and pyrolysis at 900°C exhibited the highest ORR activity with the onset potential of 1.02 V vs. RHE and 4 electron transfer number per oxygen molecule in 0.1 M KOH. The high catalyst durability and fuel-crossover tolerance led to stable performance of the optimal cathode after 5000 s operation, while the Pt/C cathode-based was considerably degraded. Finally, the MFC system with the optimal cathode displayed 43.9 mW·m-2 peak power density showing even reasonable performance in comparison to a Pt/C 20 wt.%.cathode. Conclusions: The results revealed that the synergistic effect of nitrogen and sulfur co-doped on the carbon substrate structure leads to improvement in catalytic activity. Also, it was clearly observed that the porous structure and order level of the carbon substrate could considerably change the ORR performance.

Single copper sites dispersed on defective TiO2−x as a synergistic oxygen reduction reaction catalyst

2021 ◽  
Vol 154 (3) ◽  
pp. 034705
Author(s):  
Minchan Li ◽  
Ning Qin ◽  
Zongwei Ji ◽  
Qingmeng Gan ◽  
Zhenyu Wang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Copper Sites ◽  
Oxygen Reduction Reaction Catalyst

scholarly journals Biomass wood-derived efficient Fe–N–C catalysts for oxygen reduction reaction

2021 ◽  
Author(s):  
Dingding Li ◽  
Zheng Han ◽  
Kunyue Leng ◽  
Shenghua Ma ◽  
Yi Wang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction

Assessing the Oxygen Reduction Reaction by a 2-electron Mechanism on Ceria Surfaces

2021 ◽  
Author(s):  
Mauro C dos Santos ◽  
Lanna Lucchetti ◽  
James Almeida ◽  
Pedro Alves da Silva Autreto
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction

The 2-electron pathway of the oxygen reduction reaction is an unwanted process in the development of fuel cells. In contrast, it has gained the scientific community’s attention due to its...

Sign in / Sign up

Export Citation Format

Share Document