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Graphene is moving beyond the realm of simple electronic devices toward areas such as advanced bio-chemical sensing. The infrared (IR) response of graphene, characterized by collective long-lived charge-carrier oscillations, could be applied in IR-absorption spectroscopy, typically used for bio-chemical analysis. However, direct light absorption by propagating plasmons in graphene is forbidden due...
Owing to its superior mechanical properties, graphene has been used to reinforce and substantially improve the strength of composite materials. Still lacking, however, is a clear understanding of graphene's reinforcing mechanism at the atomic level, especially in relation to its pull-out behavior. By molecular dynamics (MD), it is found that pull-out of graphene, different from that of micro fibers,...
We demonstrate that alkali metal salts, including KCl, NaCl, K2SO4, Na2SO4, K2CO3, and Na2CO3, can act as catalysts for carbon nanotube (CNT) growth in chemical vapor deposition (CVD). The solution of alkali metal salt, water and ethanol was nebulized and was introduced into the CVD reactor, producing CNT with a multi-walled structure. Individual CNT are terminated with an onion-shaped carbon tip...
Defective graphene nanosheets (GNSs), single-walled carbon nanotubes (SWCNTs), and herringbone graphite nanofibres (GNFs) were used as Pd 3 Pt 1 catalyst supports for an oxygen reduction reaction (ORR). Raman spectroscopy and cyclic voltammetry analyses revealed oxygen-containing functional groups and physical defects on the surfaces of the SWCNTs, GNFs, and synthesised GNSs. Mass-transfer-corrected...
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