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Volume 14
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Article

Coated Biodegradable Zinc Lithium Alloys: Development and Characterization of Co-Doped Strontium Copper Tricalcium Phosphate Coating for Antimicrobial Applications

by
Julietta V. Rau
1,2,*,
Angela De Bonis
3,
Mariangela Curcio
3,
Katia Barbaro
4,
Marco Fosca
1,
Inna V. Fadeeva
5,
Giovana Collombaro Cardoso
6,
Roberto Teghil
3,
Tatiana K. Slonskaya
2 and
Yufeng Zheng
7
1
Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Via del Fosso del Cavaliere 100, 00133 Rome, Italy
2
Department of Analytical, Physical and Colloid Chemistry, Institute of Pharmacy, I.M. Sechenov First Moscow State Medical University, Trubetskaya 8, Build. 2, Moscow 119048, Russia
3
Dipartimento di Scienze, Università della Basilicata, Via dell’Ateneo Lucano 10, 85100 Potenza, Italy
4
Istituto Zooprofilattico Sperimentale Lazio e Toscana “M. Aleandri”, Via Appia Nuova, 00178 Rome, Italy
5
A.A. Baikov Institute of Metallurgy and Material Science, Russian Academy of Sciences, Leninsky 49, Moscow 119334, Russia
6
Laboratório de Anelasticidade e Biomateriais, UNESP—Universidade Estadual Paulista, Bauru 17033-360, SP, Brazil
7
School of Materials Science and Engineering, Peking University, No. 5 Yi-He-Yuan Road, Hai-Dian District, Beijing 100871, China
*
Author to whom correspondence should be addressed.
Coatings 2024, 14(8), 1073; https://doi.org/10.3390/coatings14081073
Submission received: 25 July 2024 / Revised: 14 August 2024 / Accepted: 20 August 2024 / Published: 22 August 2024
(This article belongs to the Collection Feature Paper Collection in 'Surface Coatings for Biomedicine and Bioengineering')
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Abstract

Zinc biodegradable implants represent a revolutionary advancement in medical technology, offering a promising alternative to titanium and stainless-steel implants and avoiding the need for secondary surgeries for removal. In this study, we aimed to fulfil the clinical demand for biodegradable implant materials by applying a coating of double-doped strontium and copper resorbable tricalcium phosphate (SrCu-TCP) onto a zinc-lithium (Zn-Li) biodegradable alloy using the Pulsed Laser Deposition method. The coated surfaces were thoroughly characterized using X-ray Diffraction, Fourier Transform Infrared Spectroscopy, Atomic Force Microscopy, and Scanning Electron Microscopy coupled with Energy Dispersive X-ray. Microbiology experiments were conducted to assess the inhibitory effects on the growth of various bacteria strains, including gram-positive Staphylococcus aureus and Enterococcus faecalis, gram-negative Pseudomonas aeruginosa and Escherichia coli, as well as the fungus Candida albicans. The obtained results showed that the roughness of the Zn-Li alloy increased from 91.8 ± 29.4 to 651.0 ± 179.5 nm when coated with SrCu-TCP. The thickness of the coating ranged between 3–3.5 µm. The inhibition of growth for all four bacteria strains and the fungus was in the range of 24–35% when cultured on SrCu-TCP coated Zn-Li samples. These findings suggest that the developed coatings are promising candidates for applications requiring inhibition of microorganisms.
Keywords: coatings; biodegradable coatings; tricalcium phosphate coatings; copper and strontium doped tricalcium phosphate; copper and strontium co-doped tricalcium phosphate; biodegradable alloys; Zn-Li alloy coatings; biodegradable coatings; tricalcium phosphate coatings; copper and strontium doped tricalcium phosphate; copper and strontium co-doped tricalcium phosphate; biodegradable alloys; Zn-Li alloy

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MDPI and ACS Style

Rau, J.V.; De Bonis, A.; Curcio, M.; Barbaro, K.; Fosca, M.; Fadeeva, I.V.; Cardoso, G.C.; Teghil, R.; Slonskaya, T.K.; Zheng, Y. Coated Biodegradable Zinc Lithium Alloys: Development and Characterization of Co-Doped Strontium Copper Tricalcium Phosphate Coating for Antimicrobial Applications. Coatings 2024, 14, 1073. https://doi.org/10.3390/coatings14081073

AMA Style

Rau JV, De Bonis A, Curcio M, Barbaro K, Fosca M, Fadeeva IV, Cardoso GC, Teghil R, Slonskaya TK, Zheng Y. Coated Biodegradable Zinc Lithium Alloys: Development and Characterization of Co-Doped Strontium Copper Tricalcium Phosphate Coating for Antimicrobial Applications. Coatings. 2024; 14(8):1073. https://doi.org/10.3390/coatings14081073

Chicago/Turabian Style

Rau, Julietta V., Angela De Bonis, Mariangela Curcio, Katia Barbaro, Marco Fosca, Inna V. Fadeeva, Giovana Collombaro Cardoso, Roberto Teghil, Tatiana K. Slonskaya, and Yufeng Zheng. 2024. "Coated Biodegradable Zinc Lithium Alloys: Development and Characterization of Co-Doped Strontium Copper Tricalcium Phosphate Coating for Antimicrobial Applications" Coatings 14, no. 8: 1073. https://doi.org/10.3390/coatings14081073

APA Style

Rau, J. V., De Bonis, A., Curcio, M., Barbaro, K., Fosca, M., Fadeeva, I. V., Cardoso, G. C., Teghil, R., Slonskaya, T. K., & Zheng, Y. (2024). Coated Biodegradable Zinc Lithium Alloys: Development and Characterization of Co-Doped Strontium Copper Tricalcium Phosphate Coating for Antimicrobial Applications. Coatings, 14(8), 1073. https://doi.org/10.3390/coatings14081073

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