Proposed model for growth preference of plate-like nanohydroxyapatite crystals on superhydrophilic vertically aligned carbon nanotubes by electrodeposition

Author(s)

Lobo, A. O. ^{[1, 2]} ; Marciano, F. R. ^{[1, 2]} ; Regiani, I. ^[3] ; Ramos, S. C. ^[4] ; Matsushima, J. T. ^[4] ; Corat, E. J. ^[4]

Affiliation

^[1] Univ Vale Paraiba Univ VaP, Lab Nanotecnol Biomed NanoBio, BR-12244000 Sao Jose Dos Campos, SP - Brazil

^[2] Univ Vale Paraiba, Inst Pesquisa & Desenvolvimento, Lab Espectroscopia Vibrac Biomed LEVB, BR-12244000 Sao Jose Dos Campos, SP - Brazil

^[3] Inst Tecnol Aeronaut ITA, BR-12228900 Sao Jose Dos Campos - Brazil

^[4] Inst Nacl Pesquisas Espaciais INPE, Lab Associado Sensores Mat LAS, BR-12227010 Sao Jose Dos Campos - Brazil

• Document type: Journal article
• Source: THEORETICAL CHEMISTRY ACCOUNTS; v. 130, n. 4-6, p. 1071-1082, DEC 2011.
• Web of Science Citations: 11

Abstract

For the first time, the mechanism of growth of plate-like n-HA electrodeposited on superhydrophilic vertically aligned multi-walled carbon nanotubes (VACNT) is presented and a model for the specific growth preference is discussed. Results show that the carboxyl (carboxylic acid)/carboxylate functional groups directly attached on VACNT tips after oxygen plasma treatment were essential for the acceleration of the OH(-) formation and the deposition of plate-like HA crystals. FEG-SEM, EDX and XRD showed that a homogeneous highly crystalline HA film, stoichiometric and with preferential growth in the (002) plane direction, was formed. (AU)

• FAPESP's process: 07/00013-4 - New materials, studies and applications of CVD diamond, diamond-like-carbon (DLC) and nanostructured carbon obtained by chemical vapor deposition
• Grantee: Evaldo Jose Corat
• Support Opportunities: Research Projects - Thematic Grants