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Direct hydroxyapatite electrodeposition on superhydrophilic vertically aligned carbon nanotube films as scaffolds to bone tissue growth

Grant number: 12/15773-2
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): October 01, 2012
Effective date (End): March 31, 2013
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
Principal Investigator:Anderson de Oliveira Lobo
Grantee:Mustafa Mohamed Zogbi Junior
Home Institution: Instituto de Pesquisa e Desenvolvimento (IP&D). Universidade do Vale do Paraíba (UNIVAP). São José dos Campos , SP, Brazil
Associated research grant:11/17877-7 - Development of new polymeric scaffolds by electrospinning technique with incorporation of vertically aligned carbon nanotubes and nanohidroxyapatite for bone tissue regeneration, AP.JP


Vertically aligned multiwalled carbon nanotubes (VACNT) is of particular interest in regenerative medicine. Template-induced nanohydroxyapatite (HAp) has broad prospects in applied fields of bone regenerative medicine. Thus, it becomes very attractive a combination these two excellent materials to bone tissue engineering applications. VACNT films were produced as a thin film, using a microwave plasma chamber at 2.45GHz on Ti substrates (10mmx10mmx1mm). Superhydrophilic VACNT (VACNT-O2) films were obtained by the incorporation of oxygen-containing groups using a pulsed-direct current plasma reactor with pure oxygen. The electrodeposition of the nHAp crystals on the VACNT-O2 films will be perform using Ca(NO3)2.4.H2O (2,5 mM) + NH4H2PO4 (1,5 mM). The electrochemical measurements will be performing using a three-electrode cell coupled to an Autolab PGSTAT128N equipment. VACNT-O2 films will be use as working electrode, and the geometric area in contact with electrolytic solution. A platinum coil wire served as auxiliary electrode, and an Ag/AgCl electrode will be used as reference electrode. The electrodeposition parameters will be variable with different data, such as: electrolyte temperature (23-90ºC); Time (20-120 minutes); pH (4,2-7,4). Field emission gun, micro X-ray fluorescence spectrometer by energy-dispersive, X-ray diFfractogram, Raman spectroscopy will be use for characterization.

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ZOGBI, JR., M. M.; SAITO, E.; ZANIN, H.; MARCIANO, F. R.; LOBO, A. O. Hydrothermal-electrochemical synthesis of nano-hydroxyapatite crystals on superhydrophilic vertically aligned carbon nanotubes. Materials Letters, v. 132, p. 70-74, OCT 1 2014. Web of Science Citations: 12.

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