The Promotional Effect of Ag in Pd‐Ag/Carbon Nanotube‐Graphene Electrocatalysts for Alcohol and Formic Acid Oxidation Reactions

2020 ◽  
Vol 7 (12) ◽  
pp. 2629-2636 ◽  
Author(s):  
D. Rajesh ◽  
C. Mahendiran ◽  
C. Suresh
Keyword(s):  
Carbon Nanotube ◽  
Formic Acid ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Oxidation Reactions ◽  
Promotional Effect

Significance of wall number on the carbon nanotube support-promoted electrocatalytic activity of Pt NPs towards methanol/formic acid oxidation reactions in direct alcohol fuel cells

2015 ◽  
Vol 3 (5) ◽  
pp. 1961-1971 ◽  
Author(s):  
Weiyong Yuan ◽  
Yi Cheng ◽  
Pei Kang Shen ◽  
Chang Ming Li ◽  
San Ping Jiang
Keyword(s):  
Fuel Cells ◽  
Carbon Nanotube ◽  
Formic Acid ◽  
Electrocatalytic Activity ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Oxidation Reactions ◽  
Direct Alcohol Fuel Cells ◽  
Alcohol Fuel

The inner walls of CNTs have a significant effect on the electrocatalytic activity of supported Pt NPs for MOR/FAOR in fuel cells.

scholarly journals Electrochemical Deposition of Platinum and Palladium on Gold Nanoparticles Loaded Carbon Nanotube Support for Oxidation Reactions in Fuel Cell

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Surin Saipanya ◽  
Somchai Lapanantnoppakhun ◽  
Thapanee Sarakonsri
Keyword(s):  
Carbon Nanotube ◽  
Formic Acid ◽  
Hydrogen Adsorption ◽  
Active Surface ◽  
Formic Acid Oxidation ◽  
Hydrogen Desorption ◽  
Acid Oxidation ◽  
Active Surface Area ◽  
Cyclic Voltammograms ◽  
Oxidation Reactions

Pt and Pd sequentially electrodeposited Au nanoparticles loaded carbon nanotube (Au-CNT) was prepared for the electrocatalytic study of methanol, ethanol, and formic acid oxidations. All electrochemical measurements were carried out in a three-electrode cell. A platinum wire and Ag/AgCl were used as auxiliary and reference electrodes, respectively. Suspension of the Au-CNT, phosphate buffer, isopropanol, and Nafion was mixed and dropped on glassy carbon as a working electrode. By sequential deposition method, PdPtPt/Au-CNT, PtPdPd/Au-CNT, and PtPdPt/Au-CNT catalysts were prepared. Cyclic voltammograms (CVs) of those catalysts in 1 M H2SO4solution showed hydrogen adsorption and hydrogen desorption reactions. CV responses for those three catalysts in methanol, ethanol, and formic acid electrooxidations studied in 2 M CH3OH, CH3CH2OH, and HCOOH in 1 M H2SO4show characteristic oxidation peaks. The oxidation peaks at anodic scan contribute to those organic substance oxidations while the peaks at cathodic scan are related with the reoxidation of the adsorbed carbonaceous species. Comparing all those three catalysts, it can be found that the PdPtPt/Au-CNT catalyst is good at methanol oxidation; the PtPdPt/Au-CNT effectively enhances ethanol oxidation while the PtPdPd/Au-CNT exceptionally catalyzes formic acid oxidation. Therefore, a different stoichiometry affects the electrochemical active surface area of the catalysts to achieve the catalytic oxidation reactions.

Yolk-Shell Fe3O4-Polyaniline Decorated Pd-Ni Nanoparticles with Enhanced Performance for Direct Formic Acid Fuel Cell

NANO ◽  
2017 ◽  
Vol 12 (02) ◽  
pp. 1750016 ◽  
Author(s):  
Akram Hosseinian ◽  
Rahim Hosseinzadeh-Khanmiri ◽  
Ebrahim Ghorbani-Kalhor ◽  
Jafar Abolhasani ◽  
Mirzaagha Babazadeh ◽  
...  
Keyword(s):  
Formic Acid ◽  
Formic Acid Oxidation ◽  
Catalytic Performance ◽  
Ni Catalyst ◽  
Acid Oxidation ◽  
Ni Nanoparticles ◽  
Functional Effect ◽  
Ni Catalysts ◽  
Promotional Effect

The yolk-shell Fe3O4-polyaniline for decoration of Pd-Ni nanoparticles (yolk-shell Fe3O4-PANI/Pd-Ni) were synthesized and used as a new electrocatalyst for oxidation of formic acid. The yolk-shell Fe3O4-PANI/Pd-Ni catalyst provided superior catalyst performance for formic acid oxidation in H2SO4 aqueous solution. These yolk-shell Fe3O4-PANI/Pd-Ni catalysts were found to be more resistant to deactivation in the oxidation of formic acid than yolk-shell Fe3O4-PANI/Pd and Pd/C and to consistently show better long-term performances. The enhanced catalytic performance may arise from the unique structure and surface properties of the yolk-shell Fe3O4-PANI and bi-functional effect, which process extraordinary promotional effect on Pd catalyst.

New catalytic designs of Pt on carbon nanotube-nickel-carbon black for enhancement of methanol and formic acid oxidation

2020 ◽  
Vol 876 ◽  
pp. 114518
Author(s):  
Suwaphid Themsirimongkon ◽  
Nathapong Pongpichayakul ◽  
Li Fang ◽  
Jaroon Jakmunee ◽  
Surin Saipanya
Keyword(s):  
Carbon Nanotube ◽  
Carbon Black ◽  
Formic Acid ◽  
Formic Acid Oxidation ◽  
Acid Oxidation

Carbon nanotube-copper oxide-supported palladium anode catalysts for electrocatalytic enhancement in formic acid oxidation

2021 ◽  
Author(s):  
Suphitsara Maturost ◽  
Suwaphid Themsirimongkon ◽  
Surin Saipanya ◽  
Li Fang ◽  
Natthapong Pongpichayakul ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Formic Acid ◽  
Copper Oxide ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Anode Catalysts ◽  
Supported Palladium
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