Chem. reduced graphite oxide with strongly improved shape anisotropy was prepd. by Staudenmaier oxidn. of high surface area graphite, followed by hydrazine monohydrate redn. Selection of the starting graphite was effected on the basis of the highest shape anisotropy of the crystallites. The overall oxidn.-redn. procedure preserves the in-plane order of graphite and dramatically increases the out-of-plane disorder, which becomes similar to that one of carbon black. In particular, the overall procedure led to aggregates of few piled structural layers (D⊥ ≈ 2 nm) with increased periodicity perpendicular to the layers (from 0.339 nm up to 0.362 nm) and with high shape (D‖/D⊥ ≈ 13) and strain (ε⊥/ε‖ ≈ 15) anisotropy.
Chemically Reduced Graphite Oxide with Improved Shape Anisotropy
MAURO, MARCO;LONGO, Pasquale;GUERRA, Gaetano
2012-01-01
Abstract
Chem. reduced graphite oxide with strongly improved shape anisotropy was prepd. by Staudenmaier oxidn. of high surface area graphite, followed by hydrazine monohydrate redn. Selection of the starting graphite was effected on the basis of the highest shape anisotropy of the crystallites. The overall oxidn.-redn. procedure preserves the in-plane order of graphite and dramatically increases the out-of-plane disorder, which becomes similar to that one of carbon black. In particular, the overall procedure led to aggregates of few piled structural layers (D⊥ ≈ 2 nm) with increased periodicity perpendicular to the layers (from 0.339 nm up to 0.362 nm) and with high shape (D‖/D⊥ ≈ 13) and strain (ε⊥/ε‖ ≈ 15) anisotropy.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
