High-resolution x-ray photoelectron spectroscopy study of the ethanol oxidation reaction on Pd(110)

1999 ◽  
Vol 110 (17) ◽  
pp. 8703-8713 ◽  
Author(s):  
R. P. Holroyd ◽  
R. A. Bennett ◽  
I. Z. Jones ◽  
M. Bowker
Keyword(s):  
High Resolution ◽  
Photoelectron Spectroscopy ◽  
Oxidation Reaction ◽  
Ethanol Oxidation ◽  
Spectroscopy Study ◽  
Ethanol Oxidation Reaction ◽  
X Ray

An In Situ Quick X‐ray Absorption Spectroscopy Study on Pt 3 Sn/Graphene Catalyst for Ethanol Oxidation Reaction

ChemCatChem ◽  
2020 ◽  
Author(s):  
Bing‐Jian Su ◽  
Kuan‐Wen Wang ◽  
Chung‐Jen Tseng ◽  
Kueih‐Tzu Lu ◽  
Chih‐Wen Pao ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Oxidation Reaction ◽  
Ethanol Oxidation ◽  
Spectroscopy Study ◽  
Ethanol Oxidation Reaction ◽  
X Ray ◽  
X Ray Absorption

scholarly journals Effect of Pd on the Electrocatalytic Activity of Pt towards Oxidation of Ethanol in Alkaline Solutions

2021 ◽  
Vol 11 (3) ◽  
pp. 1315
Author(s):  
Salma Jadali ◽  
Mohammad Ali Kamyabi ◽  
José Solla-Gullón ◽  
Enrique Herrero
Keyword(s):  
Photoelectron Spectroscopy ◽  
Electrocatalytic Activity ◽  
Oxidation Reaction ◽  
Ethanol Oxidation ◽  
Aldol Condensation ◽  
Pd Nanoparticles ◽  
Alkaline Media ◽  
Alkaline Solutions ◽  
Ethanol Oxidation Reaction ◽  
X Ray

The understanding of electrocatalytic activity and poisoning resistance properties of Pt and Pd nanoparticles, recognized as the best electrocatalysts for the ethanol oxidation reaction, is an essential step for the commercialization of direct ethanol fuel cells (DEFCs). In this paper, mono and bimetallic Pt and Pd nanoparticles with different atomic ratios have been synthesized to study their electrocatalytic properties for an ethanol oxidation reaction in alkaline solutions. The different nanoparticles were physiochemically characterized by transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The electrochemical characterization was performed by cyclic voltammetry and chronoamperometry measurements. The electrochemical measurements indicate that Pt nanoparticles have much higher electrocatalytic activity for ethanol oxidation than Pd nanoparticles. The studies with bimetallic PtPd nanoparticles showed a significant impact of their composition on the ethanol oxidation. Thus, the highest electrocatalytic activity and poisoning resistance properties were obtained for Pt3Pd2 nanoparticles. Moreover, this study demonstrates that the poisoning of the catalyst surface through ethanol oxidation is related to the prevalence of the acetaldehyde–acetate route and the polymerization of acetaldehyde through aldol condensation in the alkaline media.

scholarly journals Energy Storage and CO2 Reduction Performances of Co/Co2C/C Prepared by an Anaerobic Ethanol Oxidation Reaction Using Sacrificial SnO2

Catalysts ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1116
Author(s):  
Young In Choi ◽  
Ju Hyun Yang ◽  
So Jeong Park ◽  
Youngku Sohn
Keyword(s):  
Electron Microscopy ◽  
Energy Storage ◽  
Oxidation Reaction ◽  
Ethanol Oxidation ◽  
Co2 Reduction ◽  
Synthetic Methods ◽  
Mass Spectrometry Analysis ◽  
Co3o4 Nanoparticles ◽  
Ethanol Oxidation Reaction ◽  
X Ray

Co/Co2C/C hybrids were prepared employing a new synthetic route and demonstrated as materials for energy storage and CO2 recycling application. Herein, an anaerobic ethanol oxidation reaction over Co3O4 nanoparticles (NPs) was first employed to fabricate Co/Co2C/C hybrids using sacrificial SnO2. In the absence of SnO2, Co3O4 NPs were converted to alpha and beta metallic Co. On the other hand, using sacrificial SnO2 resulted in the formation of Co2C and Co embedded in the carbon matrix at approximately 450 °C, as determined by temperature-programmed mass spectrometry analysis. The newly developed materials were fully examined by X-ray diffraction crystallography, scanning electron microscopy, energy-dispersive X-ray analysis, high-resolution transmission electron microscopy, and X-ray photoelectron spectroscopy. The Co/Co2C/C hybrids showed a specific capacitance of 153 F/g at a current density of 0.5 A/g. Photocatalytic CO2 reduction experiments were performed and generated CO, CH4, and CH3OH as reduction products with yields of 47.7, 11.0, and 23.4 μmol/g, respectively. The anaerobic ethanol oxidation reaction could be a very useful method for the development of carbon-supported metal carbides, which have not been achieved by other synthetic methods. Furthermore, the demonstration tests unveiled new application areas of Co carbide materials.

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