INVESTIGATION OF THE ELECTROCHEMICAL BEHAVIOR OF HEAT-TREATED CARBON BLACKS AND Pt/C CATALYSTS

In this paper we report the electrochemical behavior of heat-treated carbon blacks and Pt/C catalysts. Cyclic voltammetry indicates that the heat-treated carbon black as catalyst support does not improve the Pt/C catalyst's activity for methanol oxidation. An XPS study of a Pt-loaded carbon black indicates that the amounts of oxidized platinum and oxygen-functional groups on catalysts are decreased when the platinum particles are deposited on the heat-treated carbon surface. These changes in the surface and crystalline structural properties of carbon materials lead to the catalytic activity change in methanol electro-oxidation.

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ADSORPTION STUDIES ON A SERIES OF HEAT TREATED SHAWINIGAN ACETYLENE CARBON BLACKS

Canadian Journal of Chemistry ◽

10.1139/v57-202 ◽

1957 ◽

Vol 35 (12) ◽

pp. 1542-1554 ◽

Cited By ~ 7

Author(s):

J. M. Holmes ◽

R. A. Beebe

Keyword(s):

Heat Treatment ◽

Carbon Black ◽

Low Oxygen ◽

Carbon Blacks ◽

Heat Treated ◽

Treated Carbon ◽

Derivatives Of ◽

Graphitic Material ◽

Acetylene Carbon ◽

Acetylene Carbon Black

An experimental study has been made of the adsorption of a nitrogen, sulphur dioxide, carbon dioxide, and ammonia on Shawinigan acetylene carbon black and several derivatives of this material produced by heat treatment up to temperatures of 3000°. The effect of the heat treatment of the Shawinigan carbon black on its adsorption of the polar and non-polar gases studied is compared with the behavior of other heat treated carbon blacks. In particular, the effect of the low oxygen content of the Shawinigan black is considered. The isosteric heats of adsorption for ammonia on the most highly graphitized material (Shawinigan 3000) have been calculated. The results are in general agreement with previous calorimetric work of this laboratory. A special type of hysteresis for the system ammonia – Shawinigan black has been observed. This may be due to a reversible swelling of the graphitic material.

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Raman studies of heat-treated carbon blacks

Carbon ◽

10.1016/0008-6223(94)90125-2 ◽

1994 ◽

Vol 32 (7) ◽

pp. 1377-1382 ◽

Cited By ~ 117

Author(s):

Tyler Gruber ◽

T.Waldek Zerda ◽

Michel Gerspacher

Keyword(s):

Carbon Blacks ◽

Heat Treated ◽

Treated Carbon

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24. A survey of ESR in heat treated carbon blacks

Carbon ◽

10.1016/0008-6223(65)90090-4 ◽

1965 ◽

Vol 3 (3) ◽

pp. 330

Author(s):

G Arnold

Keyword(s):

Carbon Blacks ◽

Heat Treated ◽

Treated Carbon

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Phosphate-Doped Carbon Black as Pt Catalyst Support: Co-catalytic Functionality for Dimethyl Ether and Methanol Electro-oxidation

ChemElectroChem ◽

10.1002/celc.201300025 ◽

2013 ◽

Vol 1 (2) ◽

pp. 448-454 ◽

Cited By ~ 16

Author(s):

Min Yin ◽

Yunjie Huang ◽

Qingfeng Li ◽

Jens Oluf Jensen ◽

Lars N. Cleemann ◽

...

Keyword(s):

Carbon Black ◽

Dimethyl Ether ◽

Catalyst Support ◽

Pt Catalyst ◽

Electro Oxidation

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Cyclic Voltammetry Characterization of Au, Pd, and AuPd Nanoparticles Supported on Different Carbon Nanofibers

Surfaces ◽

10.3390/surfaces2010016 ◽

2019 ◽

Vol 2 (1) ◽

pp. 205-215 ◽

Cited By ~ 5

Author(s):

Anna Testolin ◽

Stefano Cattaneo ◽

Wu Wang ◽

Di Wang ◽

Valentina Pifferi ◽

...

Keyword(s):

Cyclic Voltammetry ◽

Surface Chemistry ◽

Carbon Nanofibers ◽

Photoelectron Spectroscopy ◽

Carbon Support ◽

Carbon Surface ◽

Carbon Supports ◽

Heat Treated ◽

Temperature Heat ◽

Treated Carbon

Three types of carbon nanofibers (pyrolytically stripped carbon nanofibers (PS), low-temperature heat treated carbon nanofibers (LHT), and high-temperature heat treated carbon nanofibers (HHT)) with different graphitization degrees and surface chemistry have been used as support for Au, Pd, or bimetallic AuPd alloy nanoparticles (NPs). The carbon supports have been characterized using Raman, X-ray photoelectron spectroscopy (XPS), and cyclic voltammetry (CV). Moreover, the morphology of the metal nanoparticles was investigated using transmission electron microscopy (TEM) and CV. The different properties of the carbon-based supports (particularly the graphitization degree) yield different electrochemical behaviors, in terms of potential window widths and electrocatalytic effects. Comparing the electrochemical behavior of monometallic Au and Pd and bimetallic AuPd, it is possible to observe the interaction of the two metals when alloyed. Moreover, we demonstrate that carbon surface has a strong effect on the electrochemical stability of AuPd nanoparticles. By tuning the Au-Pd nanoparticles’ morphology and modulating the surface chemistry of the carbon support, it is possible to obtain materials characterized by novel electrochemical properties. This aspect makes them good candidates to be conveniently applied in different fields.

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