scholarly journals Understanding the Dielectric Properties of Heat-Treated Carbon Nanofibers at Terahertz Frequencies: a New Perspective on the Catalytic Activity of Structured Carbonaceous Materials

2009 ◽  
Vol 113 (24) ◽  
pp. 10554-10559 ◽  
Author(s):  
Edward P. J. Parrott ◽  
J. Axel Zeitler ◽  
James McGregor ◽  
Shu-Pei Oei ◽  
Husnu Emrah Unalan ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Dielectric Properties ◽  
Carbon Nanofibers ◽  
Carbonaceous Materials ◽  
Heat Treated ◽  
Terahertz Frequencies ◽  
New Perspective ◽  
Treated Carbon

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.

Hydrogen storage in heat-treated carbon nanofibers prepared by the vertical floating catalyst method

2003 ◽  
Vol 78 (3) ◽  
pp. 670-675 ◽  
Author(s):  
Hongwei Zhu ◽  
Xuesong Li ◽  
Lijie Ci ◽  
Cailu Xu ◽  
Dehai Wu ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Carbon Nanofibers ◽  
Heat Treated ◽  
Treated Carbon

CATALYTIC ACTIVITY OF HEAT-TREATED Co(II)-TETRAPHENYLPORPHYRIN FOR CATHODIC REDUCTION OF OXYGEN

1982 ◽  
Vol 11 (10) ◽  
pp. 1659-1662 ◽  
Author(s):  
Katsuaki Okabayashi ◽  
Osamu Ikeda ◽  
Hideo Tamura
Keyword(s):  
Catalytic Activity ◽  
Cathodic Reduction ◽  
Heat Treated
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