Journal
THEORETICAL CHEMISTRY ACCOUNTS
Volume 130, Issue 4-6, Pages 1071-1082Publisher
SPRINGER
DOI: 10.1007/s00214-011-0993-x
Keywords
Carbon nanotubes; Vertically aligned; Superhydrophilic; Hydroxyapatite; Electrodeposition; Plasma etching; Plate-like crystals
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Funding
- FAPESP [07/00013-4, 06/03525-3]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [07/00013-4] Funding Source: FAPESP
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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.
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