Fast preparation of nano-hydroxyapatite/superhydrophilic reduced graphene oxide composites for bioactive applications

Fast preparation of nano-hydroxyapatite/superhydrophilic reduced graphene oxide composites for bioactive applications

Author Zanin, Hudson Google Scholar
Saito, Eduardo Google Scholar
Marciano, Fernanda Roberta Google Scholar
Ceragioli, Helder Jose Google Scholar
Campos Granato, Alessandro Eustaquio Autor UNIFESP Google Scholar
Porcionatto, Marimelia Autor UNIFESP Google Scholar
Lobo, Anderson Oliveira Google Scholar
Institution Natl Inst Space Res
Univ Vale do Paraiba
Universidade Estadual de Campinas (UNICAMP)
Universidade Federal de São Paulo (UNIFESP)
Abstract A method for the direct electrodeposition of globular nano-hydroxyapatite (nHAp) onto reduced graphene oxide (RGO) is presented and a model for the specific growth preference is discussed. Results show that the carboxyl (carboxylic acid)/carboxylate functional groups attached directly to the RGO after oxygen plasma treatment were essential to accelerate the OH- formation and the deposition of globular nHAp crystals. High resolution scanning electron microscopy, energy dispersive X-ray and X-ray diffraction showed that homogeneous, highly crystalline, stoichiometric nHAp crystals, with preferential growth in the (002) plane direction, were formed without any thermal treatment. the nHAp/RGO composites were shown to be an appropriate surface for mesenchymal stem cell adhesion with active formation of membrane projections.
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Grant number FAPESP: 2011/17877-7
FAPESP: 2011/20345-7
Date 2013-01-01
Published in Journal of Materials Chemistry B. Cambridge: Royal Soc Chemistry, v. 1, n. 38, p. 4947-4955, 2013.
ISSN 2050-750X (Sherpa/Romeo, impact factor)
Publisher Royal Soc Chemistry
Extent 4947-4955
Origin http://dx.doi.org/10.1039/c3tb20550a
Access rights Closed access
Type Article
Web of Science ID WOS:000324425600007
URI http://repositorio.unifesp.br/handle/11600/35824

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