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Dataset for Crystal chemistry and antibacterial properties of cupriferous hydroxyapatite
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Bhattacharjee, Arjak, Fang, Yanan, Hooper, Thomas J. N., Kelly, Nicole L., Gupta, Disha, Balani, Kantesh, Manna, Indranil, Baikie, Tom, Bishop, Peter T., White, T. J. and Hanna, John V. (2019) Dataset for Crystal chemistry and antibacterial properties of cupriferous hydroxyapatite. [Dataset]
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Official URL: http://wrap.warwick.ac.uk/118481
Abstract
Copper-doped hydroxyapatite (HA) of nominal composition Ca10(PO4)6[Cux(OH)2-2xOx] (0.0 ≤ x ≤ 0.8) was prepared by solid-state and wet chemical processing to explore the impact of the synthesis route and mode of crystal chemical incorporation of copper on the antibacterial efficacy against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) strains. Apatites prepared by solid-state reaction showed unit cell volume dilation from 527.17 Å3 for copper-free HA to 533.31 Å3 for material of the putative composition Ca10(PO4)6[Cu0.8(OH)0.4O0.8] consistent with Cu+ insertion into the [001] hydroxyapatite channel. This was less pronounced (528.30 Å3 to 529.3 Å3) in the corresponding wet chemical synthesised products, suggesting less complete Cu tunnel incorporation and partial tenancy of Cu in place of calcium. X-ray absorption spectroscopy suggests fast quenching is necessary to prevent oxidation of Cu+ to Cu2+. Raman spectroscopy revealed an absorption band at 630 cm−1 characteristic of symmetric O-Cu+-O units tenanted in the apatite channel while solid-state 31P magic-angle-spinning nuclear magnetic resonance (MAS NMR) supported a vacancy-Cu+ substitution model within the apatite channel. The copper doping strategy increases antibacterial efficiency by 25% to 55% compared to undoped HA, with the finer particle sizes and greater specific surface areas of the wet chemical material demonstrating superior efficacy.
Item Type: | Dataset | ||||||||||||||||||||||||||||||
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Subjects: | Q Science > QD Chemistry | ||||||||||||||||||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Hydroxyapatite, Antibacterial agents | ||||||||||||||||||||||||||||||
Publisher: | University of Warwick, Department of Physics | ||||||||||||||||||||||||||||||
Official Date: | 19 June 2019 | ||||||||||||||||||||||||||||||
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Status: | Not Peer Reviewed | ||||||||||||||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||||||||||||||||||||
Description: | This document serves as instructions for the location of the data within the directory Hanna_MDPI Materials_Repository available from the University of Warwick open access research data repository, WRAP (Warwick Research Archive Portal). This data directory contains the raw data files for all the data presented in the Materials MDPI manuscript entitled “Crystal Chemistry and Antibacterial Properties of Cupriferous Hydroxyapatite“. The directory is separated into the subdirectories below Antibacterial FTIR NMR Raman SEM XAS XRD |
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