Skip to Content
Merck
  • Synthesis and characterization of carbon nanofibers by catalytic chemical vapor deposition using non-ferromagnetic metal complexes.

Synthesis and characterization of carbon nanofibers by catalytic chemical vapor deposition using non-ferromagnetic metal complexes.

Journal of nanoscience and nanotechnology (2014-04-18)
Chi-Jung Su, Wei-Li Yuan, Tzu-Wei Lai, Chien-Ming Lei
PMID24738371
ABSTRACT

Carbon nanofibers (CNFs) have wide applications in energy storage devices, electrically conducting composites, selective adsorbents, and catalyst supports. Catalytic chemical vapor deposition was carried out in this work to synthesize CNFs at mild temperatures of 700 and 800 degrees C. Non-ferromagnetic metal complexes of La, Nb, and Ti, spread on porous NaX-type zeolite support, were tested as new catalyst. CNFs ranging from 30 to 200 nm in diameter were obtained. Images of transmission electron microscopy showed encapsulated transition-metal nanoparticles by CNFs. X-ray diffraction patterns revealed the crystalline structures of La (FCC), Nb (BCC), and Ti (HCP) formed over zeolite. Magnetic hysteresis loops showed superconductivity from the CNF-encapsulated Nb at 2 K. Raman spectra showed that all the samples possessed graphitic and amorphous carbon structures. Based on the SEM images and Raman spectra, the three metals all catalyzed the synthesis of CNFs.

MATERIALS
Product Number
Brand
Product Description
97876
Sigma-Aldrich
Activated Charcoal Norit®, Norit® CA1, wood, chemically activated, powder
53663
Sigma-Aldrich
Activated Charcoal Norit®, Norit® SX ultra, from peat, corresponds U.S. Food chemicals codex (3rd Ed.), steam activated and acid washed, highly purified, powder
37771
Sigma-Aldrich
Activated Charcoal Norit®, Norit® GAC 1240W, from coal, for potable water processing, steam activated, granular
22874
Sigma-Aldrich
Activated Charcoal Norit®, Norit® PK 1-3, from peat, steam activated, granular
93067
Sigma-Aldrich
Activated Charcoal Norit®, Norit® SX2, powder, from peat, multi-purpose activated charcoal, steam activated and acid washed
29204
Sigma-Aldrich
Activated Charcoal Norit®, Norit® RB3, for gas purification, steam activated, rod
80485
Supelco
Activated charcoal, for the determination of AOX, 50-150 μm particle size
633100
Sigma-Aldrich
Carbon, nanopowder, <100 nm particle size (TEM)
29238
Supelco
Activated Charcoal Norit®, Norit® RBAA-3, rod
05112
Millipore
Activated charcoal, suitable for GC
05105
Supelco
Activated charcoal, powder
484164
Sigma-Aldrich
Carbon, glassy, spherical powder, 2-12 μm, 99.95% trace metals basis
31616
Supelco
Activated charcoal, puriss. p.a., powder
C9157
Sigma-Aldrich
Activated charcoal, suitable for cell culture, suitable for plant cell culture
161551
Sigma-Aldrich
Activated charcoal, powder, -100 particle size (mesh), decolorizing
GF81659166
Carbon, tube, graphite, 50mm, outside diameter 3.18mm, inside diameter 1.18mm, wall thickness 1.0mm, 99.95%
GF23879009
Carbon, foil, 100x100mm, thickness 0.5mm, flexible graphite, 99.8%
GF45345562
Carbon - Vitreous, rod, 200mm, diameter 5.0mm, glassy carbon
GF37715182
Carbon, foil, 100x100mm, thickness 0.5mm, rigid graphite, fine grain size, 99.95%
GF61342220
Carbon - Vitreous, foam, 150x150mm, 0.05g.cmué, porosity 96.5%, 24 pores/cm
GF22691426
Carbon - Vitreous, foil, 10x10mm, thickness 1.0mm, glassy carbon
GF24425805
Carbon - Vitreous, rod, 200mm, diameter 7.0mm, glassy carbon
GF99431523
Carbon - Vitreous, foil, 10x10mm, thickness 4.0mm, glassy carbon
GF72189782
Carbon - Vitreous, rod, 100mm, diameter 1.0mm, glassy carbon
GF93251011
Carbon - Vitreous, rod, 50mm, diameter 1.0mm, glassy carbon
GF10355958
Carbon - Vitreous, foil, 25x25mm, thickness 0.5mm, glassy carbon
GF61313600
Carbon, foil, 100x100mm, thickness 1.0mm, rigid graphite, fine grain size, 99.95%
C2889
Sigma-Aldrich
Activated charcoal, untreated, granular, 8-20 mesh
C2764
Sigma-Aldrich
Activated charcoal, untreated, granular, ≤5 mm
329428
Sigma-Aldrich
Activated charcoal, Norit® ROW 0.8 SUPRA, pellets