Electrochemical and Morphological Investigations of Ga Addition to Pt Electrocatalyst Supported on Carbon
Joint Authors
Ribeiro, J.
Carneiro, Maria Tereza W. D.
Evangelista, Tereza Cristina Santos
Paganoto, Giordano Toscano
Guimarães, Marco Cesar Cunegundes
Santos, Deise M.
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-03-29
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
This paper is consisted in the synthesis of platinum-based electrocatalysts supported on carbon (Vulcan XC-72) and investigation of the addition of gallium in their physicochemical and electrochemical properties toward ethanol oxidation reaction (EOR).
PtGa/C electrocatalysts were prepared through thermal decomposition of polymeric precursor method at a temperature of 350°C.
Six different compositions were homemade: Pt50Ga50/C, Pt60Ga40/C, Pt70Ga30/C, Pt80Ga20/C, Pt90Ga10/C, and Pt100/C.
These electrocatalysts were electrochemically characterized by cyclic voltammetry (CV), chronoamperometry (CA), chronopotentiometry (CP), and electrochemical impedance spectroscopy (EIS) in the presence and absence of ethanol 1.0 mol L−1.
Thermogravimetric analysis (TGA), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and transmission electron microscopy (TEM) were also carried out for a physicochemical characterization of those materials.
XRD results showed the main peaks of face-centered cubic Pt.
The particle sizes obtained from XRD and TEM analysis range from 7.2 nm to 12.9 nm.
The CV results indicate behavior typical of Pt-based electrocatalysts in acid medium.
The CV, EIS, and CA data reveal that the addition of up to 31% of gallium to the Pt highly improves catalytic activity on EOR response when compared to Pt100/C.
American Psychological Association (APA)
Paganoto, Giordano Toscano& Santos, Deise M.& Evangelista, Tereza Cristina Santos& Guimarães, Marco Cesar Cunegundes& Carneiro, Maria Tereza W. D.& Ribeiro, J.. 2017. Electrochemical and Morphological Investigations of Ga Addition to Pt Electrocatalyst Supported on Carbon. The Scientific World Journal،Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1205424
Modern Language Association (MLA)
Paganoto, Giordano Toscano…[et al.]. Electrochemical and Morphological Investigations of Ga Addition to Pt Electrocatalyst Supported on Carbon. The Scientific World Journal No. 2017 (2017), pp.1-15.
https://search.emarefa.net/detail/BIM-1205424
American Medical Association (AMA)
Paganoto, Giordano Toscano& Santos, Deise M.& Evangelista, Tereza Cristina Santos& Guimarães, Marco Cesar Cunegundes& Carneiro, Maria Tereza W. D.& Ribeiro, J.. Electrochemical and Morphological Investigations of Ga Addition to Pt Electrocatalyst Supported on Carbon. The Scientific World Journal. 2017. Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1205424
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1205424