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Title: Antibacterial Copper–Hydroxyapatite Composite Coatings via Electrochemical Synthesis

Abstract

Antibacterial copper-hydroxyapatite (Cu-HA) composite coatings on titanium were synthesized using a novel process consisting of two consecutive electrochemical reactions. In the first stage, HA nanocrystals were grown on titanium using cathodic electrolytic synthesis. The HA-coated titanium was then used as the cathode in a second reaction stage to electrochemically reduce Cu2+ ions in solution to metallic Cu nanoparticles. Reaction conditions were found that result in nano-scale Cu particles growing on the surface of the HA crystals. The two-stage synthesis allows facile control of copper content in the HA coatings. Antibacterial activity was measured by culturing Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive) in the presence of coatings having varying copper content. The coatings displayed copper concentration-dependent antibacterial activity against both types of bacteria, likely due to the slow release of copper ions from the coatings. Lastly, the observation of antibacterial activity from a relatively low loading of copper on the bioactive HA support suggests that multifunctional implant coatings can be developed to supplement or supplant prophylactic antibiotics used in implant surgery that are responsible for creating resistant bacteria strains.

Authors:
 [1];  [2];  [1]; ORCiD logo [2]; ORCiD logo [3]
  1. Univ. of Rochester, NY (United States). Dept. of Chemical Engineering
  2. Univ. of Rochester, NY (United States). Dept. of Dermatology
  3. Univ. of Rochester, NY (United States). Dept. of Chemical Engineering, and Lab. for Laser Energetics
Publication Date:
Research Org.:
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1515003
Report Number(s):
2018-310,1494
Journal ID: ISSN 0743-7463; 2018-310, 1494, 2454
Grant/Contract Number:  
NA0003856
Resource Type:
Accepted Manuscript
Journal Name:
Langmuir
Additional Journal Information:
Journal Volume: 35; Journal Issue: 17; Journal ID: ISSN 0743-7463
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Ghosh, Rashmi, Swart, Oliver, Westgate, Sabrina, Miller, Benjamin L., and Yates, Matthew Z. Antibacterial Copper–Hydroxyapatite Composite Coatings via Electrochemical Synthesis. United States: N. p., 2019. Web. doi:10.1021/acs.langmuir.9b00919.
Ghosh, Rashmi, Swart, Oliver, Westgate, Sabrina, Miller, Benjamin L., & Yates, Matthew Z. Antibacterial Copper–Hydroxyapatite Composite Coatings via Electrochemical Synthesis. United States. https://doi.org/10.1021/acs.langmuir.9b00919
Ghosh, Rashmi, Swart, Oliver, Westgate, Sabrina, Miller, Benjamin L., and Yates, Matthew Z. Fri . "Antibacterial Copper–Hydroxyapatite Composite Coatings via Electrochemical Synthesis". United States. https://doi.org/10.1021/acs.langmuir.9b00919. https://www.osti.gov/servlets/purl/1515003.
@article{osti_1515003,
title = {Antibacterial Copper–Hydroxyapatite Composite Coatings via Electrochemical Synthesis},
author = {Ghosh, Rashmi and Swart, Oliver and Westgate, Sabrina and Miller, Benjamin L. and Yates, Matthew Z.},
abstractNote = {Antibacterial copper-hydroxyapatite (Cu-HA) composite coatings on titanium were synthesized using a novel process consisting of two consecutive electrochemical reactions. In the first stage, HA nanocrystals were grown on titanium using cathodic electrolytic synthesis. The HA-coated titanium was then used as the cathode in a second reaction stage to electrochemically reduce Cu2+ ions in solution to metallic Cu nanoparticles. Reaction conditions were found that result in nano-scale Cu particles growing on the surface of the HA crystals. The two-stage synthesis allows facile control of copper content in the HA coatings. Antibacterial activity was measured by culturing Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive) in the presence of coatings having varying copper content. The coatings displayed copper concentration-dependent antibacterial activity against both types of bacteria, likely due to the slow release of copper ions from the coatings. Lastly, the observation of antibacterial activity from a relatively low loading of copper on the bioactive HA support suggests that multifunctional implant coatings can be developed to supplement or supplant prophylactic antibiotics used in implant surgery that are responsible for creating resistant bacteria strains.},
doi = {10.1021/acs.langmuir.9b00919},
journal = {Langmuir},
number = 17,
volume = 35,
place = {United States},
year = {Fri Apr 05 00:00:00 EDT 2019},
month = {Fri Apr 05 00:00:00 EDT 2019}
}

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Works referencing / citing this record: