Polyaniline pyrolysis assisted by ITO to prepare Pt catalyst support for methanol oxidation reaction

2021 ◽  
pp. 127311
Author(s):  
Zhengyan Zhang ◽  
Zhi Teng ◽  
Xingwei Li
Keyword(s):  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
Catalyst Support ◽  
Pt Catalyst ◽  
Methanol Oxidation Reaction

A novel strategy for the synthesis of sulfur-doped carbon nanotubes as a highly efficient Pt catalyst support toward the methanol oxidation reaction

2017 ◽  
Vol 5 (36) ◽  
pp. 19467-19475 ◽  
Author(s):  
Jing-Jing Fan ◽  
You-Jun Fan ◽  
Rui-Xiang Wang ◽  
Sheng Xiang ◽  
Hua-Guo Tang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxidation Reaction ◽  
Catalyst Support ◽  
Pt Nanoparticles ◽  
Pt Catalyst ◽  
Methanol Oxidation Reaction ◽  
Multi Walled Carbon Nanotubes ◽  
Novel Strategy ◽  
Walled Carbon Nanotubes ◽  
Functionalized Mwcnts

Sulfur-doped multi-walled carbon nanotubes (S-MWCNTs) derived from PEDOT-functionalized MWCNTs can significantly improve the dispersion of supported Pt nanoparticles and enhance their electrocatalytic performance for the MOR.

Ruthenium and ruthenium oxide nanofiber supports for enhanced activity of platinum electrocatalysts in the methanol oxidation reaction

2016 ◽  
Vol 18 (22) ◽  
pp. 14859-14866 ◽  
Author(s):  
Geon-Hyoung An ◽  
Eun-Hwan Lee ◽  
Hyo-Jin Ahn
Keyword(s):  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
Ruthenium Oxide ◽  
Electrochemical Activity ◽  
Pt Catalyst ◽  
Catalyst Supports ◽  
Methanol Oxidation Reaction ◽  
Enhanced Activity

Ru and RuO2 nanofiber composites arranged into nanosized grains as Pt catalyst supports are synthesized by electrospinning and post-calcination, which show excellent electrochemical activity.

Increasing Pt methanol oxidation reaction activity and durability with a titanium molybdenum nitride catalyst support

2015 ◽  
Vol 273 ◽  
pp. 33-40 ◽  
Author(s):  
Yonghao Xiao ◽  
Zhenggao Fu ◽  
Guohe Zhan ◽  
Zhanchang Pan ◽  
Chumin Xiao ◽  
...  
Keyword(s):  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
Catalyst Support ◽  
Methanol Oxidation Reaction ◽  
Molybdenum Nitride

Platinum–Copper Bimetallic Alloy Nanoflowers as Efficient Electrocatalyst for the Methanol Oxidation Reaction

2018 ◽  
Vol 18 (12) ◽  
pp. 8296-8301
Author(s):  
Ruimin Xing ◽  
Rui Li ◽  
Liangyu Tong ◽  
Bingyue Li ◽  
Deling Kong ◽  
...  
Keyword(s):  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
High Performance ◽  
Catalyst Activity ◽  
Pt Catalyst ◽  
Methanol Oxidation Reaction ◽  
Ammonium Bromide ◽  
Experimental Conditions ◽  
One Pot ◽  
Bimetallic Alloy

Special morphological noble metal-based bimetallic alloy nanostructures became popular for methanol oxidation reaction in order to reduce the high cost of the Pt catalyst and improve the catalyst activity. Herein, we developed a facile one pot hydrothermal method for the synthesis of platinum–copper bimetallic nanoflowers (Pt–Cu NFs) in the presence of hexadecyl trimethyl ammonium bromide (CTAB). The morphology, structure and composition of Pt–Cu NFs were carefully characterized and the synthesized parameters were optimized systematically by adjusting different experimental conditions. Results showed that the CTAB usage and the NaI amount were critical to the controlled synthesis of Pt–Cu NFs. The Pt–Cu NFs were high-performance electrocatalysts for the methanol oxidation reaction (MOR) with superior activity and superior stability in alkaline solution, which were far better than pure Pt nanoparticle electrocatalysts.

Nitrogen/sulfur dual-doped mesoporous carbon with controllable morphology as a catalyst support for the methanol oxidation reaction

Carbon ◽  
2015 ◽  
Vol 87 ◽  
pp. 424-433 ◽  
Author(s):  
Yuanqin Chang ◽  
Fei Hong ◽  
Jinxin Liu ◽  
Minsui Xie ◽  
Qianling Zhang ◽  
...  
Keyword(s):  
Methanol Oxidation ◽  
Mesoporous Carbon ◽  
Oxidation Reaction ◽  
Catalyst Support ◽  
Methanol Oxidation Reaction

Evolution of Pt Nanoclusters Morphology on PEMFC Electrode due to Methanol Oxidation Reaction Studied by Electron Microscopy and Synchrotron Grazing Incidence X-Ray Diffraction

2006 ◽  
Vol 51 ◽  
pp. 181-186
Author(s):  
Marco Alvisi ◽  
Giovanna Galtieri ◽  
L. Giorgi ◽  
Emanuele Serra ◽  
Tiziana Di Luccio ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Fuel Cells ◽  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
Catalyst Layer ◽  
Grazing Incidence ◽  
Pt Catalyst ◽  
Methanol Oxidation Reaction ◽  
X Ray Diffraction ◽  
X Ray

The proton exchange membrane fuel cells (PEMFC) have been developed mainly as a power source for vehicles, power generation and consumer electronics since they combine high energy conversion efficiency at relatively low temperatures without pollutants emission in the environment. An electrode for a PEMFC is a layered structure composed by a catalyst layer deposited on a porous carbon substrate. The substrate is usually covered by a diffusion layer that enhances the gas and water flow. Platinum nanoparticles supported by carbon microparticles are commonly employed as catalyst layer. In this work an extreme ultra-low loading of Pt catalyst (< 0.02 mg/cm2) has been deposited by magnetron sputtering on gas diffusion electrodes, with different carbon supports (Vulcan and SuperP), in order to enhance the activity of PEM fuel cells. The morphology (shape and grain size) and microstructure have been studied combining field emission scanning electron microscopy (FEG-SEM), grazing incidence synchrotron x-ray diffraction (GIXRD) and x-ray photoelectron spectroscopy (XPS). The results presented here concern the evolution of the cluster size and shape after the ageing, induced by cyclic voltammetry for methanol oxidation reaction.

scholarly journals Methanol Oxidation on Graphenic-Supported Platinum Catalysts

Surfaces ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 16-31 ◽  
Author(s):  
Gladys Arteaga ◽  
Luis M. Rivera-Gavidia ◽  
Sthephanie J. Martínez ◽  
Rubén Rizo ◽  
Elena Pastor ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Methanol Oxidation ◽  
Photoelectron Spectroscopy ◽  
Oxidation Reaction ◽  
Catalyst Support ◽  
Pt Nanoparticles ◽  
Catalytic Performance ◽  
Methanol Oxidation Reaction ◽  
X Ray ◽  
Supported Platinum Catalysts

Graphene oxide (GO), reduced graphene oxide by thermal treatment (rGO-TT), nitrogen-modified rGO (N-rGO), and carbon Vulcan were synthesized and employed in the current work as catalyst support for Pt nanoparticles, to study their properties and impact toward the methanol oxidation reaction (MOR) in sulfuric acid medium. Several physicochemical techniques, such as X-ray photoelectron spectroscopy (XPS), X-ray powder diffraction (XRD), Transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), Raman, and elemental analysis were employed to characterize the novel materials, while potentiodynamic and potentiostatic methods were used to study catalytic performance toward the methanol oxidation reaction in acidic medium. The main results indicate a high influence of the support on the surface electronic state of the catalyst, and consequently the catalytic performance toward the MOR is modified. Accordingly, Pt/N-rGO and Pt/rGO-TT show the lowest and the highest catalytic performance toward the MOR, respectively.

Nanomaterials-Based PEM Electrodes by Combining Chemical and Physical Depositions

2011 ◽  
Vol 8 (4) ◽  
Author(s):  
R. Giorgi ◽  
L. Giorgi ◽  
S. Gagliardi ◽  
E. Salernitano ◽  
M. Alvisi ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
Specific Activity ◽  
Catalyst Activity ◽  
Catalyst Support ◽  
Sputter Deposition ◽  
Utilization Efficiency ◽  
Methanol Oxidation Reaction ◽  
Carbon Based

The real market penetration of polymer electrolyte fuel cells is hindered by the high cost of this technology mainly due to the expensive platinum catalyst. Two approaches are followed to reduce the cost: one way is to increase the Pt utilization efficiency reducing at the same time the total load and the other way is to increase the catalytic activity of the catalyst/support assembly. In this work, the increase of utilization efficiency is addressed by optimizing the catalyst distribution on the uppermost layer of the electrode via electrodeposition and sputter deposition, while the improvement of the catalyst activity is pursued by nanostructuring the catalysts and the carbon-based supports. A very low Pt loading (0.006 mg cm−2) was obtained by sputter deposition on electrodes that exhibited a mass specific activity for methanol oxidation reaction better than a commercial product. Carbon nanofibers used as catalyst support of electrodeposited platinum nanoparticles resulted in improved mass specific activity and long term stability compared to conventional carbon-based supports. Finally, PtAu alloys developed by sputter deposition were found more efficient than commercial PtRu catalyst for the methanol oxidation reaction. In conclusion, polymer electrolyte membrane fuel cell electrode based on nanomaterials, developed by combining physical and chemical deposition processes, showed outstanding electrochemical performance.

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