Search
Now showing items 1-10 of 17
Synthesis and characterization of boron-doped single-wall carbon nanotubes produced by the laser vaporization technique
(The American Chemical Society: Chemistry of Materials, 2006-05-16)
We present the first successful high-yield laser vaporization synthesis of high-quality boron-doped single-wall carbon nanotubes (B-SWNTs). Boron was loaded into graphite targets in the form of elemental B as well as nickel ...
Protonation of carbon single-walled nanotubes studied using 13C and 1H-13C cross polarization nuclear magnetic resonance and raman spectroscopies
(The American Chemical Society: Journal of the American Chemical Society, 2005-12-14)
The reversible protonation of carbon single-walled nanotubes (SWNTs) in sulfuric acid and Nafion was investigated using solid-state nuclear magnetic resonance (NMR) and Raman spectroscopies. Magic-angle spinning (MAS) was ...
Investigation of the electronic structure of carbon single wall nanotube hybrid nanostructures
(Plasmonic Nano-imaging and Nanofabrication: Proceedings of the SPIE, 2005-08-03)
The effects of protonation on the structure of the carbon single-walled nanotube (SWNT) polymer composites were studied by solid-state nuclear magnetic resonance (NMR) techniques and Raman spectroscopy. In addition, ...
Development and characterization of single wall carbon nanotube–Nafion composite actuators
(Elsevier: Materials Science and Engineering B, 2005-02-15)
The development and characterization of thin film polymeric actuators has been performed for single wall carbon nanotube (SWNT)–Nafion composite systems. Previous work in our laboratory illustrated that incorporation of ...
Systematic inclusion of defects in pure carbon single-wall nanotubes and their effect on the Raman D-band
(Elsevier: Chemical Physics Letters, 2005-01-11)
The Raman D-band feature (∼1350 cm[-][1]) is examined with 2.54 eV excitation for pure bulk carbon single-wall nanotube samples before and after treatments that increase defect densities. Upon employing mass-transport-limited ...
Electrochemical transformation of SWNT/Nafion composites
(The Electrochemical Society: Electrochemical and Solid State Letters, 2004-10-08)
The electrochemical performance of single wall carbon nanotube (SWNT)/Nafion composite electrodes were studied in sulfuric acid solutions. Electrochemical oxidation of the highly dispersed SWNTs within the Nafion matrix ...
Assessing the hydrogen adsorption capacity of single-wall carbon nanotube / metal composites
(American Institute of Physics Conference Proceedings: Hydrogen in Materials and Vacuum Systems, 2003-07-11)
Carefully controlled and calibrated experiments indicate a maximum capacity for adsorption of hydrogen on SWNTs is ~8 wt% under room temperature and pressure conditions. Samples displaying this maximum value were prepared ...
Fuel cell applications of nanotube-metal supported catalysts
(Materials Research Society Proceedings Fall 2002: Materials for Fuel Cells and Fuel Processors, 2002-12-02)
Novel carbon materials with nanometer dimensions are of potentially significant importance for a number of advanced technological applications. Within this report we describe the results for the electrochemical characterization ...
Single wall carbon nanotube-Nafion composite actuators
(The American Chemical Society: Nano Letters, 2002-11)
Single wall carbon nanotube (SWNT)-Nafion composite actuators have been demonstrated for 0.1-18% w/w doping of purified SWNTs within the polymer matrix. The high purity SWNTs, >95% w/w, were homogeneously dispersed into ...
Effects of adsorbed O2, H2, CO2 and H2O on the optical properites of pure and polymer encapsulated single walled carbon nanotubes
(American Physical Society: Annual APS March Meeting, 2002-03-18)
We have measured the optical absorption spectra of single wall carbon nanotubes (SWCNTs) and SWCNT-polymer matrix samples at several temperatures and pressures. An in-situ cell was designed that allowed for heating of ...