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 ◽  
Nathaphong Pongpitayakul ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Formic Acid ◽  
Copper Oxide ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Anode Catalysts ◽  
Supported Palladium

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

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

Highly active carbon nanotube-supported Ru@Pd core-shell nanostructure as an efficient electrocatalyst toward ethanol and formic acid oxidation

2017 ◽  
Vol 436 ◽  
pp. 138-144 ◽  
Author(s):  
Xiao-Jie Zhang ◽  
Jun-Ming Zhang ◽  
Pan-Yu Zhang ◽  
Yang Li ◽  
Sheng Xiang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Formic Acid ◽  
Active Carbon ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Core Shell ◽  
Highly Active

scholarly journals Formic acid oxidation at platinum-bismuth catalysts

2015 ◽  
Vol 80 (10) ◽  
pp. 1217-1249 ◽  
Author(s):  
Ksenija Popovic ◽  
Jelena Lovic
Keyword(s):  
Formic Acid ◽  
Bimetallic Catalysts ◽  
Chemical Properties ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Key Factors ◽  
Anode Catalysts ◽  
Onset Potential ◽  
Oxidation Current ◽  
Anodic Reactions

The field of heterogeneous catalysis, specifically catalysis on bimetallic surfaces, has seen many advances over the past few decades. Bimetallic catalysts, which often show electronic and chemical properties that are distinct from those of their parent metals, offer the opportunity to obtain new catalysts with enhanced selectivity, activity, and stability. The oxidation of formic acid is of permanent interest as a model reaction for the mechanistic understanding of the electrooxidation of small organic molecules and because of its technical relevance for fuel cell applications. Platinum is one of the most commonly used catalysts for this reaction, despite the fact that it shows a few significant disadvantages: high cost and extreme susceptibility to poisoning by CO. To solve this problem, several approaches have been used, but generally, they all consist in the modification of platinum with a second element. Especially, bismuth has received significant attention as Pt modifier. According to the results presented in this survey dealing with the effects influencing the formic acid oxidation it was found that two types of Pt-Bi bimetallic catalysts (bulk and low loading deposits on GC) showed superior catalytic activity in terms of the lower onset potential and oxidation current density, as well as exceptional stability compared to Pt. The findings in this report are important for the understanding of mechanism of formic acid electrooxidation on a bulk alloy and decorated surface, for the development of advanced anode catalysts for direct formic acid fuel cells, as well as for the synthesis of novel low-loading bimetallic catalysts. The use of bimetallic compounds as the anode catalysts is an effective solution to overcoming the problems of the formic acid oxidation current stability for long term applications. In the future, the tolerance of both CO poisoning and electrochemical leaching should be considered as the key factors in the development of electrocatalysts for the anodic reactions.

Carbon nanotube supported platinum–palladium nanoparticles for formic acid oxidation

2010 ◽  
Vol 55 (13) ◽  
pp. 4217-4221 ◽  
Author(s):  
Olumide Winjobi ◽  
Zhiyong Zhang ◽  
Changhai Liang ◽  
Wenzhen Li
Keyword(s):  
Carbon Nanotube ◽  
Formic Acid ◽  
Palladium Nanoparticles ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Supported Platinum

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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