access icon free Synthesis and characterisation of modified carbon nanotubes with potassium salts of the monosubstituted Keggin polyoxometalates

A novel hybrid of potassium salts of the monosubstituted Keggin polyoxometalates/carbon nanotube nanocomposite is synthesised. Multiwalled carbon nanotubes (MWCNTs) were synthesised by the catalytic chemical vapour deposition method. The characterisation of the materials by Fourier transform infrared spectroscopy, and transmission electron microscopy, shows that the functionalisation of MWCNTs by potassium salts of the monosubstituted Keggin polyoxometalates was successfully achieved via the impregnation method in both endohedral and exohedral forms. Theoretical studies for the covalent conjugation of Keggin polyoxometalates to carbon nanotubes, showed that the functionalisation of MWCNTs by some groups such as COOH and OH is required.

Inspec keywords: transmission electron microscopy; Fourier transform spectra; polymers; catalysis; infrared spectra; carbon nanotubes; nanocomposites; chemical vapour deposition; potassium compounds; nanofabrication

Other keywords: Fourier transform infrared spectroscopy; impregnation method; C; potassium salts; catalytic chemical vapour deposition method; FTIR; exohedral form; multiwalled carbon nanotubes; transmission electron microscopy; endohedral form; TEM; covalent conjugation; modified carbon nanotubes; monosubstituted Keggin polyoxometalates-carbon nanotube nanocomposite

Subjects: Methods of nanofabrication and processing; Heterogeneous catalysis at surfaces and other surface reactions; Optical properties of thin films, low-dimensional and nanoscale structures; Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials; Infrared and Raman spectra and scattering (condensed matter)

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http://iet.metastore.ingenta.com/content/journals/10.1049/mnl.2014.0168
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