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Synthesis and Characterization of Nanostructures: MWCNT f /TiO 2 and MWCNT f /TiO 2 /HAp
Author(s) -
Albano C.,
Sarmiento Y.,
González G.
Publication year - 2012
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201251112
Subject(s) - materials science , calcination , thermal stability , sol gel , chemical engineering , precipitation , carbon nanotube , nanoparticle , dispersion (optics) , pulmonary surfactant , nanostructure , nanocomposite , coating , characterization (materials science) , nanotechnology , catalysis , organic chemistry , chemistry , physics , optics , meteorology , engineering
Summary: In the present work nanostructured systems based on multiwalled carbon nanotubes (MWCNT) coated with titania (TiO 2 ), hydroxyapatite (HAp) and their combinations were synthesized using sol‐gel and precipitation methods. Different synthesis variables were used (calcination, concentration of MWCNT and gel aging time). The TiO 2 nanoparticles size was 4.4 nm, independent of the synthesis conditions. The best coating was obtained by aging the gel during 20 days. Also the use of the surfactant SDS resulted in a good dispersion of the HAp particles on the MWCNT walls. HAp increases the thermal stability of MWCNTs.