Electrocatalysis of Pd–Co supported on carbon black or ball-milled carbon nanotubes towards methanol oxidation in alkaline media

2010 ◽  
Vol 99 (1-2) ◽  
pp. 229-234 ◽  
Author(s):  
Yi Wang ◽  
Xin Wang ◽  
Chang Ming Li
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Black ◽  
Methanol Oxidation ◽  
Alkaline Media

scholarly journals Electrochemical Performance Improvement of the Catalyst of the Methanol Microfuel Cell Using Carbon Nanotubes

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Mohammad Kazemi Nasrabadi ◽  
Amir Ebrahimi-Moghadam ◽  
Ravinder Kumar ◽  
Narjes Nabipour
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Black ◽  
Electrochemical Performance ◽  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
Supported Catalyst ◽  
Methanol Oxidation Reaction ◽  
Test Results ◽  
Electrochemical Tests ◽  
Microfuel Cell

In this research, the electrocatalytic activity of platinum-ruthenium nanoparticles on carbon nanotubes and carbon black in methanol oxidation reaction has been investigated. Moreover, the electrochemical performance of a single passive direct methanol fuel cell run by these two different electrocatalysts has been reported. Physical characterization and electrochemical tests reveal the superiority of PtRu on carbon nanotubes. Based on the voltammetry outcomes, it was found that methanol oxidation reaction kinetics has been improved on the nanotube-supported catalyst. The current density of oxidation reaction has increased up to 62% in nanotube sample compared to carbon black-supported one. The electrochemical test results have shown that the carbon nanotubes increase the performance of the microfuel cell by 37% at maximum power density, compared to the carbon black. Moreover, the resistance of the samples supported by carbon nanotubes to poisonous intermediate species has been found 3% more than carbon black-supported one. According to the chronoamperometry test results, it was concluded that the performance and sustainability of the carbon nanotube electrocatalyst show a remarkable improvement compared to carbon black electrocatalyst in the long term.

Electro-deposition on carbon black and carbon nanotubes of Pt nanostructured catalysts for methanol oxidation

2008 ◽  
Vol 183 (1) ◽  
pp. 84-91 ◽  
Author(s):  
Claudia Paoletti ◽  
Alessia Cemmi ◽  
Leonardo Giorgi ◽  
Rossella Giorgi ◽  
Luciano Pilloni ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Black ◽  
Methanol Oxidation ◽  
Nanostructured Catalysts ◽  
Electro Deposition

Mn-Mo-O Catalysts for Methanol Oxidation. I. Preparation and Characterization of the Catalysts

1992 ◽  
Vol 57 (12) ◽  
pp. 2529-2538 ◽  
Author(s):  
Krasimir Ivanov ◽  
Penka Litcheva ◽  
Dimitar Klissurski
Keyword(s):  
Methanol Oxidation ◽  
Solution Concentration ◽  
Alkaline Media ◽  
Acidic Media ◽  
Chemical Methods ◽  
X Ray ◽  
Ph Values ◽  
Precipitate Composition

Mn-Mo-O catalysts with a different Mo/Mn ratio have been prepared by precipitation. The precipitate composition as a function of solution concentration and pH was studied by X-ray, IR, thermal and chemical methods. Formation of manganese molybdates with MnMoO4.1.5H2O, Mn3Mo3O12.2.5H2O, and Mn3Mo4O15.4H2O composition has been supposed. It is concluded that pure MnMoO4 may be obtained in both acid and alkaline media, the pH values depending on the concentration of the initial solutions. The maximum Mo/Mn ratio in the precipitates is 1.33. The formation of pure Mn3Mo4O15.4H2O is possible in weakly acidic media. This process is favoured by increasing the concentration of initial solutions.

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