Methanol Oxidation Reaction on α-Tungsten Carbide Versus Platinum (1 1 1) Surfaces: A DFT Electrochemical Study

ChemCatChem ◽  
2015 ◽  
Vol 7 (21) ◽  
pp. 3533-3543 ◽  
Author(s):  
Cristiana Di Valentin ◽  
Diego Fittipaldi ◽  
Gianfranco Pacchioni
Keyword(s):  
Tungsten Carbide ◽  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
Electrochemical Study ◽  
Methanol Oxidation Reaction

Tungsten Carbide Nanofiber Prepared by Electrospinning for Methanol Oxidation Reaction

2013 ◽  
Vol 596 ◽  
pp. 55-59
Author(s):  
Takayuki Ishikawa ◽  
Mohammad Ali Abdelkareem ◽  
Takuya Tsujiguchi ◽  
Nobuyoshi Nakagawa
Keyword(s):  
Tungsten Carbide ◽  
Tungsten Oxide ◽  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
Direct Methanol Fuel Cells ◽  
Electrospun Nanofibers ◽  
Methanol Oxidation Reaction ◽  
Anode Catalyst ◽  
Electrospinning Technique ◽  
Direct Methanol

Tungsten carbide nanofibers for the anode catalyst of direct methanol fuel cells (DMFCs) were prepared from the precursor nanofibers with the diameter around 250 nm using an electrospinning technique. The electrospun nanofibers from the mixture of ammonium metatungstate and polyvinylpyrrolidone were dried and calcined in air at 700 °C to form tungsten oxide nanofibers, and reduced in 20 vol.% CH4/H2 atmosphere at 700 °C for 2 h. Surface morphology and crystalline structure of the prepared nanofibers were investigated using FE-SEM and XRD. The methanol oxidation reaction (MOR) activity of the prepared samples was evaluated by cyclic voltammetry (CV). The FE-SEM and XRD analyses showed that beaded nanofibers of tungsten carbide were successfully obtained. The WC nanofiber electrocatalyst exhibited a MOR activity suggesting it can be a candidate of the catalyst for DMFC. The presence of impurities, carbon and tungsten oxide, which may affect the activity, were detected at the surface.

Pore structure dependent activity and durability of mesoporous rhodium nanoparticles towards the methanol oxidation reaction

2020 ◽  
Vol 56 (32) ◽  
pp. 4448-4451 ◽  
Author(s):  
Yan Guo ◽  
Shuai Chen ◽  
Yuan Li ◽  
Yunwei Wang ◽  
Houbing Zou ◽  
...  
Keyword(s):  
Porous Structure ◽  
Pore Structure ◽  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
Structure Effect ◽  
Methanol Oxidation Reaction ◽  
Rhodium Nanoparticles ◽  
Dependent Activity

A significant porous structure effect of mesoporous rhodium nanoparticles on the electrocatalytic methanol oxidation reaction was reported.

Catalytic performance of non-alloyed bimetallic PtAu electrocatalysts for methanol oxidation reaction

2017 ◽  
Vol 42 (51) ◽  
pp. 30109-30118 ◽  
Author(s):  
Yuan-Yuan Feng ◽  
Gui-Hua Song ◽  
Qiang Zhang ◽  
Hua-Shuai Hu ◽  
Mei-Ying Feng ◽  
...  
Keyword(s):  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
Catalytic Performance ◽  
Methanol Oxidation Reaction
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