| Texto completo | |
| Autor(es): |
Metoki, N.
[1]
;
Rosa, C. M. R.
[2]
;
Zanin, H.
[3]
;
Marciano, F. R.
[2]
;
Eliaz, N.
[1]
;
Lobo, A. O.
[2]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Tel Aviv Univ, Dept Mat Sci & Engn, IL-6997801 Tel Aviv - Israel
[2] Univ Vale Paraiba, Inst Res & Dev, Lab Biomed Nanotechnol Nanobio, Av Shishima Hifumi 2911, BR-12244000 Sao Jose Dos Campos, SP - Brazil
[3] Univ Vale Paraiba, Inst Res & Dev, Lab Energy Storage & Supply ES&S, Av Shishima Hifumi 2911, BR-12244000 Sao Jose Dos Campos, SP - Brazil
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | SURFACE & COATINGS TECHNOLOGY; v. 297, p. 51-57, JUL 15 2016. |
| Citações Web of Science: | 7 |
| Resumo | |
Nano-calcium-phosphate (n-CaP) is an attractive, biocompatible material for increasing osteointegration. Among nanomaterials, functionalized carbon-based materials are emerging materials, which have excellent mechanical properties, biocompatibility and chemical stability. These properties may further enhance the n-CaP performance. It has been shown that stoichiometric n-CaP can be electrodeposited on graphene and carbon nanotubes (CNTs) by employing fast and low-cost electrodeposition techniques. Here, we present, for the first time, a crystalline, needle-like nano-beta-tricalcium phosphate (n-beta-TCP) electrodeposited on reduced graphene oxide (rGO) nanosheets. The rGO was grown on CNT, as a composite biomaterial, in a one-step process, followed by electrodeposition of n-CaP. The results show that, in acidic pH, needle-like crystals appear on the surface. It is speculated that the carboxyl (carboxylic acid)/carboxylate functional groups attached directly to the rGO are essential in accelerating OH- formation and deposition of needle-like n-CaP crystals. High-resolution scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction elucidated homogeneous, highly crystalline, n-CaP (beta-tricalcium phosphate) crystals. This composite presented an excellent in vitro biomineralization after soaking in simulated body fluid. (C) 2016 Elsevier B.V. All rights reserved. (AU) | |
| Processo FAPESP: | 11/20345-7 - Estudo de filmes de carbono-tipo diamante contendo nanopartículas incorporadas para aplicações biomédicas |
| Beneficiário: | Fernanda Roberta Marciano |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores |
| Processo FAPESP: | 13/09684-0 - Estudo de parâmetros para a eletrodeposição de hidroxiapatita sobre nanotubos de carbono alinhados visando aplicações como arcabouços para crescimento ósseo |
| Beneficiário: | Cintia Maria Rodrigues Rosa |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |
| Processo FAPESP: | 11/17877-7 - Desenvolvimento de novos scaffolds poliméricos por eletrofiação com incorporação de nanotubos alinhados e nanohidroxiapatita para regeneração óssea |
| Beneficiário: | Anderson de Oliveira Lobo |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores |