TY - GEN
T1 - Single-walled carbon nanohorns
T2 - 233rd ACS National Meeting
AU - Hu, I.
AU - Zhao, Bin
AU - Puretzky, Alexander
AU - Styers-Barnett, David
AU - Rouleau, Christopher
AU - Geohegan, David B.
AU - Liu, Yun
AU - Brown, Craig
AU - Neumann, Dan
AU - Kabbour, Houria
AU - Ahn, Channing
AU - Zielinski, John
AU - Coe, Charles
AU - Cooper, Alan
AU - Simpson, Lin
AU - Dillon, Anne
AU - Parilla, Philip
AU - Heben, Michael
AU - Kleinhammes, Alfred
AU - Wu, Yue
PY - 2007
Y1 - 2007
N2 - Single-Walled Carbon Nanohorns (SWNHs) are single-walled, cone-shaped carbon structures which form ball-shaped aggregates (∼ 50-100 nm in diameter). Here we report the effects of chemical and thermal processing treatments to adjust the surface area and tune the porosity of SWNHs for optimizing hydrogen storage. The SWNHs studied here were synthesized by laser ablation with tunable morphologies at varied laser pulse width. Post-processing by chemical and thermal treatments permits adjustment of the nanostructure as well as access to the inner empty space of SWNHs to achieve efficient hydrogen uptake. Two methods - the laser ablation of C/metal targets, and wet chemistry - have been used to decorate SWNHs with metal nanoparticles (Pt, Pd, etc). TEM and STEM images show that wet chemistry method gives more uniform decoration of Pt and Pd nanoparticles with sizes between 1-3 nm and 3-5nm, respectively. Both thermogravimetric and prompt gamma activation analysis demonstrate metal loadings of SWNHs/metal.
AB - Single-Walled Carbon Nanohorns (SWNHs) are single-walled, cone-shaped carbon structures which form ball-shaped aggregates (∼ 50-100 nm in diameter). Here we report the effects of chemical and thermal processing treatments to adjust the surface area and tune the porosity of SWNHs for optimizing hydrogen storage. The SWNHs studied here were synthesized by laser ablation with tunable morphologies at varied laser pulse width. Post-processing by chemical and thermal treatments permits adjustment of the nanostructure as well as access to the inner empty space of SWNHs to achieve efficient hydrogen uptake. Two methods - the laser ablation of C/metal targets, and wet chemistry - have been used to decorate SWNHs with metal nanoparticles (Pt, Pd, etc). TEM and STEM images show that wet chemistry method gives more uniform decoration of Pt and Pd nanoparticles with sizes between 1-3 nm and 3-5nm, respectively. Both thermogravimetric and prompt gamma activation analysis demonstrate metal loadings of SWNHs/metal.
UR - http://www.scopus.com/inward/record.url?scp=37349099789&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:37349099789
SN - 084127438X
SN - 9780841274389
T3 - ACS National Meeting Book of Abstracts
BT - 233rd ACS National Meeting, Abstracts of Scientific Papers
Y2 - 25 March 2007 through 29 March 2007
ER -
