scholarly journals Combined experimental and theoretical DFT studies on the decorated Pt@Au and Au@Pt electrocatalysts for formic acid oxidation

2011 ◽  
Author(s):  
Yaolun Yu
Keyword(s):  
Formic Acid ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Dft Studies ◽  
Pt Electrocatalysts

scholarly journals In Situ Exfoliation and Pt Deposition of Antimonene for Formic Acid Oxidation via a Predominant Dehydrogenation Pathway

Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-11 ◽  
Author(s):  
Yiqiong Zhang ◽  
Man Qiao ◽  
Yucheng Huang ◽  
Yuqin Zou ◽  
Zhijuan Liu ◽  
...  
Keyword(s):  
Formic Acid ◽  
Density Functional ◽  
Specific Activity ◽  
Pt Nanoparticles ◽  
Formic Acid Oxidation ◽  
Pt Catalyst ◽  
Acid Oxidation ◽  
Electronic Interaction ◽  
Pt Electrocatalysts

Direct formic acid fuel cell (DFAFC) has been considered as a promising energy conversion device for stationary and mobile applications. Advanced platinum (Pt) electrocatalysts for formic acid oxidation reaction (FAOR) are critical for DFAFC. However, the oxidation of formic acid on Pt catalysts often occurs via a dual pathway mechanism, which hinders the catalytic activity owing to the CO poisoning. Herein, we directly exfoliate bulk antimony to 2D antimonene (Sb) and in situ load Pt nanoparticles onto antimonene sheets with the assistance of ethylenediamine. According to the Bader charge analysis, the charge transfer from antimonene to Pt occurs, confirming the electronic interaction between Pt and Sb. Interestingly, antimonene, as a cocatalyst, alters the oxidation pathway for FAOR over Pt catalyst and makes FAOR follow the more efficient dehydrogenation pathway. The density functional theory (DFT) calculation demonstrates that antimonene can activate Pt to be a lower oxidative state and facilitate the oxidation of HCOOH into CO2 via a direct pathway, resulting in a weakened intermediate binding strength and better CO tolerance for FAOR. The specific activity of FAOR on Pt/Sb is 4.5 times, and the mass activity is 2.6 times higher than the conventional Pt/C.

Highly Active Pt3Pb and Core–Shell Pt3Pb–Pt Electrocatalysts for Formic Acid Oxidation

ACS Nano ◽  
2012 ◽  
Vol 6 (3) ◽  
pp. 2818-2825 ◽  
Author(s):  
Yijin Kang ◽  
Liang Qi ◽  
Meng Li ◽  
Rosa E. Diaz ◽  
Dong Su ◽  
...  
Keyword(s):  
Formic Acid ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Core Shell ◽  
Highly Active ◽  
Pt Electrocatalysts

NANOELECTROCATALYSTS BASED PALLADIUM FOR FUEL CELLS WITH DIRECT OXIDATION OF FORMIC ACID

2019 ◽  
Vol 6 (3) ◽  
pp. 104-107
Author(s):  
Marina Vladimirovna Lebedeva ◽  
Alexey Petrovich Antropov ◽  
Alexander Victorovich Ragutkin ◽  
Nicolay Andreevich Yashtulov
Keyword(s):  
Formic Acid ◽  
Palladium Nanoparticles ◽  
Oxidation Reaction ◽  
Electrode Materials ◽  
Formic Acid Oxidation ◽  
Energy Sources ◽  
Acid Oxidation ◽  
Direct Oxidation ◽  
Atomic Force ◽  
Formic Acid Oxidation Reaction

In paper electrode materials with palladium nanoparticles on polymer matrix substrates for energy sources have been formed. Nanocomposites were investigated by atomic force and scanning electron microscopy. The catalytic activity of formed electrodes in the formic acid oxidation reaction was evaluated by voltammetry method.

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