Pore structure of single-wall carbon nanohorn aggregates
2000; Elsevier BV; Volume: 331; Issue: 1 Linguagem: Inglês
10.1016/s0009-2614(00)01152-0
ISSN1873-4448
AutoresKatsuyuki Murata, Katsumi Kaneko, F. Kokai, Kunimitsu Takahashi, Masako Yudasaka, Sumio Iijima,
Tópico(s)Graphene research and applications
ResumoSingle-wall carbon nanohorn aggregates were characterized by N2 adsorption at 77 K and `particle density' measurement using the high pressure He buoyancy method. The single-wall carbon nanohorn aggregate had micropores and its pore volume was 0.11mlg−1. The particle density was 1.25gml−1. The particle density was not equal to the solid density of graphite (2.27gml−1), but it agreed within 15% with the density of the single-wall carbon nanohorn estimated using previous TEM data. Hence single-wall carbon nanohorns have closed micropores covered with single graphene walls. According to N2 adsorption, single-wall carbon nanohorns have a considerably large surface area (308m2g−1) and open microporosity which has been ascribed to the inter-particle aggregate structure, the so-called `dahlia flower type structure'.
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