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Nanobubble-assisted formation of carbon nanostructures on basal plane highly ordered pyrolytic graphite exposed to aqueous media

SYSNO ASEP	0341532
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Nanobubble-assisted formation of carbon nanostructures on basal plane highly ordered pyrolytic graphite exposed to aqueous media
Author(s)	Janda, Pavel (UFCH-W)_{RID, ORCID} Frank, Otakar (UFCH-W)_{RID, ORCID} Bastl, Zdeněk (UFCH-W)_{RID, ORCID} Klementová, Mariana (UACH-T)_{RID, SAI, ORCID} Tarábková, Hana (UFCH-W)_{RID, ORCID} Kavan, Ladislav (UFCH-W)_{RID, ORCID}
Source Title	Nanotechnology. - : Institute of Physics Publishing - ISSN 0957-4484 Roč. 21, č. 9 (2010), 095707
Number of pages	7 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	scanning tunneling microscopy ; hydrophobic surfaces ; Raman spectroscopy
Subject RIV	CF - Physical ; Theoretical Chemistry
R&D Projects	LC510 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	IAA400400804 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	KAN200100801 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z40400503 - UFCH-W (2005-2011)
	AV0Z40320502 - UACH-T (2005-2011)
UT WOS	000274360300032
DOI	10.1088/0957-4484/21/9/095707
Annotation	Ambient gas nanobubbles of size similar to 10(1)-10(2) nm occupying the hydrophobic surface of basal plane highly ordered pyrolytic graphite (HOPG) immersed in aqueous media at room temperature cause exfoliation of the top graphene layers, as revealed by both in situ and ex situ atomic force microscope (AFM) imaging. The formation of nanoparticles composed mostly from graphene-based nanoscrolls, nanohorn-like and onion-like nanostructures was resolved by high resolution transmission electron microscopy (TEM) and examined by diffraction and x-ray photoelectron spectroscopy (XPS) analyses. The diameter of nanostructures varied from about 5 nm for single-layered scrolls to tens of nanometres for multishells. Raman spectroscopy confirmed the structural rearrangement of the HOPG basal plane after the above-mentioned treatment. The implications for nanobubble interfacial forces are discussed.
Workplace	J. Heyrovsky Institute of Physical Chemistry
Contact	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Year of Publishing	2011

Number of the records: 1