Stabilization of CF4 plasma treated carbon surface by heat treated during and after plasma treatment

1997 ◽  
Vol 15 (4) ◽  
pp. 1937-1942 ◽  
Author(s):  
Yori Izumi ◽  
Kiichiro Kamata ◽  
Masaaki Katoh ◽  
Takeo Ohte ◽  
Akira Kojima
Keyword(s):  
Plasma Treatment ◽  
Carbon Surface ◽  
Heat Treated ◽  
Treated Carbon

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

2002 ◽  
Vol 09 (03n04) ◽  
pp. 1443-1452 ◽  
Author(s):  
C. D. HUANG ◽  
Z. T. XIONG ◽  
J. Y. LIN ◽  
K. L. TAN
Keyword(s):  
Carbon Black ◽  
Electrochemical Behavior ◽  
Catalyst Support ◽  
Carbon Surface ◽  
Carbon Blacks ◽  
Heat Treated ◽  
Platinum Particles ◽  
Electro Oxidation ◽  
Treated Carbon ◽  
Xps Study

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.

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

Surfaces ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 205-215 ◽  
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.

Raman studies of heat-treated carbon blacks

Carbon ◽  
1994 ◽  
Vol 32 (7) ◽  
pp. 1377-1382 ◽  
Author(s):  
Tyler Gruber ◽  
T.Waldek Zerda ◽  
Michel Gerspacher
Keyword(s):  
Carbon Blacks ◽  
Heat Treated ◽  
Treated Carbon

Raman scattering study for heat-treated carbon nanotubes: The origin of ≈1855cm−1 Raman band

2006 ◽  
Vol 418 (1-3) ◽  
pp. 109-114 ◽  
Author(s):  
M. Jinno ◽  
Y. Ando ◽  
S. Bandow ◽  
J. Fan ◽  
M. Yudasaka ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Raman Scattering ◽  
Raman Band ◽  
Heat Treated ◽  
Scattering Study ◽  
Treated Carbon
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