title: Raman, EELS and XPS studies of maghemite decorated multi-walled carbon nanotubes.
abstract: Iron oxide particles with the diameter being 5-10 nm were attached onto the sidewalls of multi-walled carbon nanotubes (MWCNTs) by the thermal decomposition of cyclopentadieny iron (II) dicarbonyl dimmer. The red shift of G-mode from 1579 cm(-1) to 1571 cm(-1) in the Raman profile of the decorated MWCNTs is indicative of the attachment of nanoparticles. Electron energy loss spectroscopy and X-ray photoelectron spectroscopy analyses reveals that the attached nanoparticles are composed of a maghemite phase. Transmission electron microscopy suggests the maghemite particles are covered with amorphous carbon materials and form a core-shell structure.
authors.affiliation: State Key Laboratory of Structural Analysis for Industrial Equipment, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116024, PR China; Nanoelectronics Centre, Advanced Technology Institute, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Nanoelectronics Centre, Advanced Technology Institute, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom.
authors.forename: Vlad
authors.initials: V
authors.lastname: Stolojan
authors.affiliation: Nanoelectronics Centre, Advanced Technology Institute, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom.
authors.forename: S Ravi P
authors.initials: SR
authors.lastname: Silva
authors.affiliation: State Key Laboratory of Structural Analysis for Industrial Equipment, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116024, PR China. Electronic address: cwwu@dlut.edu.cn.
authors.forename: Cheng Wei
authors.initials: CW
authors.lastname: Wu
mesh_terms: D019281:Dimerization; D004583:Electrons; D005290:Ferric Compounds / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure; D056951:Photoelectron Spectroscopy; D013057:Spectrum Analysis; D013059:Spectrum Analysis, Raman; D013818:Thermogravimetry
chemical_list: D005290:Ferric Compounds; D037742:Nanotubes, Carbon; C000499:ferric oxide
keywords: Carbon nanotube; Cyclopentadieny iron (II) dicarbonyl dimmer; EELS; Maghemite; Raman; XPS