Electro-deposition of bactericidal and corrosion-resistant hydroxyapatite nanoslabs

Sharma, Manisha and Nagar, Rohit and Meena, Vijay Kumar and Singh, Suman (2019) Electro-deposition of bactericidal and corrosion-resistant hydroxyapatite nanoslabs. RSC Advances, 9. pp. 11170-11178. ISSN 2046-2069

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Official URL: https://pubs.rsc.org/--/content/articlehtml/2019/r...


Herein, nanoscale hydroxyapatite (HA) with a slab-like morphology was synthesized, and its size was calculated to be in the range of 80–150 nm, as confirmed via scanning electron microscopy (SEM) and atomic force microscopy (AFM). The nanoscale HA with a slab-like structure has been referred as HA nanoslabs in the manuscript. The composition, crystallinity, wettability, bacterial resistance porosity, surface roughness and corrosion resistance of these HA nanoslabs were studied using energy dispersive spectroscopy (EDAX), X-ray diffraction (XRD), contact angle, colony count BET analyzer and profilometer and polarization techniques, respectively. The contact angle of the HA nanoslabs was found to be 22.6°, which indicated the hydrophilic nature of these nanoslabs. Their bacterial resistance was studied against the Salmonella typhi strain, and it was found that in the presence of the HA nanoslabs, the growth of the bacteria was hindered. For the corrosion resistance study, the HA nanoslabs were electro-deposited on a titanium alloy, used as a substrate. The deposition was carried out at varying currents, viz, 1 mA, 3 mA and 5 mA. The open circuit potential (OCP) and polarization were used for the estimation of the corrosion resistance of the bare and coated substrates. The corrosion potential started shifting towards noble potential, and the current density started decreasing with an increase in the electrochemical deposition current. This indicated good corrosion resistance of these nanoslabs.

Item Type: Article
Uncontrolled Keywords: Electro-deposition, Bactericidal, Corrosion-resistant
Subjects: CSIO > Chemistry
CSIO > Nano Science and Nano Technology
Depositing User: Ms T Kaur
Date Deposited: 14 Feb 2020 16:08
Last Modified: 14 Feb 2020 16:08
URI: http://csioir.csio.res.in/id/eprint/809

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