scholarly journals Surface Limited Redox Replacement Deposition of Platinum Ultrathin Films on Gold: Thickness and Structure Dependent Activity towards the Carbon Monoxide and Formic Acid Oxidation reactions

2016 ◽  
Vol 210 ◽  
pp. 520-529 ◽  
Author(s):  
Zakiya Al Amri ◽  
Michael P. Mercer ◽  
Natasa Vasiljevic
Keyword(s):  
Carbon Monoxide ◽  
Formic Acid ◽  
Ultrathin Films ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Oxidation Reactions ◽  
Dependent Activity ◽  
Gold Thickness

Surface-Rearranged Pd3Au/C Nanocatalysts by Using CO-Induced Segregation for Formic Acid Oxidation Reactions

ACS Catalysis ◽  
2014 ◽  
Vol 4 (8) ◽  
pp. 2402-2408 ◽  
Author(s):  
Sang-Young Lee ◽  
Namgee Jung ◽  
Jinwon Cho ◽  
Hee-Young Park ◽  
Jaeyune Ryu ◽  
...  
Keyword(s):  
Formic Acid ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Oxidation Reactions

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.

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