Photoinduced properties of anodized Ti alloys for biomaterial applications
Abstract The photocatalytic properties of anodic oxides on a newly developed TiNbSn and commonly used Ti6Al4V alloys as biomaterials were investigated. The alloys were anodized in an electrolyte of sodium tartrate acid with H2O2 at a high voltage and the mechanism of the photocatalytic and antiviral...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-08-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-41189-z |
| _version_ | 1797559597801668608 |
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| author | N. Masahashi M. Hatakeyama Y. Mori H. Kurishima H. Inoue T. Mokudai K. Ohmura T. Aizawa S. Hanada |
| author_facet | N. Masahashi M. Hatakeyama Y. Mori H. Kurishima H. Inoue T. Mokudai K. Ohmura T. Aizawa S. Hanada |
| author_sort | N. Masahashi |
| collection | DOAJ |
| description | Abstract The photocatalytic properties of anodic oxides on a newly developed TiNbSn and commonly used Ti6Al4V alloys as biomaterials were investigated. The alloys were anodized in an electrolyte of sodium tartrate acid with H2O2 at a high voltage and the mechanism of the photocatalytic and antiviral activities was studied. The anodized TiNbSn and Ti6Al4V exhibited highly crystallized rutile TiO2 and poorly crystallized anatase TiO2, respectively. X-ray photoelectron spectroscopy analysis revealed the presence of oxides of the alloying elements in addition to TiO2. The anodized TiNbSn exhibited higher activities than Ti6Al4V, and electron spin resonance spectra indicated that the number of hydroxyl radicals (⋅OH) generated from the anodized TiNbSn was higher than that from the anodized Ti6Al4V. The results can be explained by two possible mechanisms: the higher crystallinity of TiO2 on TiNbSn than that on the Ti6Al4V reduces the number of charge recombination sites and generates abundant ⋅OH; charge separation in the anodic oxide on TiNbSn due to the electronic band structure between TiO2 and the oxides of alloying elements enhances photo activities. The excellent photoinduced characteristics of the anodized TiNbSn are expected to contribute to the safe and reliable implant treatment. |
| first_indexed | 2024-03-10T17:48:36Z |
| format | Article |
| id | doaj.art-1a119251dfcd4acdb411aba54a6753b6 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-10T17:48:36Z |
| publishDate | 2023-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-1a119251dfcd4acdb411aba54a6753b62023-11-20T09:26:43ZengNature PortfolioScientific Reports2045-23222023-08-0113111110.1038/s41598-023-41189-zPhotoinduced properties of anodized Ti alloys for biomaterial applicationsN. Masahashi0M. Hatakeyama1Y. Mori2H. Kurishima3H. Inoue4T. Mokudai5K. Ohmura6T. Aizawa7S. Hanada8Institute for Materials Research, Tohoku UniversityInstitute for Materials Research, Tohoku UniversityDepartment of Orthopaedic Surgery, Graduate School of Medicine, Tohoku UniversityDepartment of Orthopaedic Surgery, Graduate School of Medicine, Tohoku UniversityDepartment of Materials Science, Graduate School of Engineering, Osaka Metropolitan UniversityInstitute for Materials Research, Tohoku UniversityInstitute for Materials Research, Tohoku UniversityDepartment of Orthopaedic Surgery, Graduate School of Medicine, Tohoku UniversityInstitute for Materials Research, Tohoku UniversityAbstract The photocatalytic properties of anodic oxides on a newly developed TiNbSn and commonly used Ti6Al4V alloys as biomaterials were investigated. The alloys were anodized in an electrolyte of sodium tartrate acid with H2O2 at a high voltage and the mechanism of the photocatalytic and antiviral activities was studied. The anodized TiNbSn and Ti6Al4V exhibited highly crystallized rutile TiO2 and poorly crystallized anatase TiO2, respectively. X-ray photoelectron spectroscopy analysis revealed the presence of oxides of the alloying elements in addition to TiO2. The anodized TiNbSn exhibited higher activities than Ti6Al4V, and electron spin resonance spectra indicated that the number of hydroxyl radicals (⋅OH) generated from the anodized TiNbSn was higher than that from the anodized Ti6Al4V. The results can be explained by two possible mechanisms: the higher crystallinity of TiO2 on TiNbSn than that on the Ti6Al4V reduces the number of charge recombination sites and generates abundant ⋅OH; charge separation in the anodic oxide on TiNbSn due to the electronic band structure between TiO2 and the oxides of alloying elements enhances photo activities. The excellent photoinduced characteristics of the anodized TiNbSn are expected to contribute to the safe and reliable implant treatment.https://doi.org/10.1038/s41598-023-41189-z |
| spellingShingle | N. Masahashi M. Hatakeyama Y. Mori H. Kurishima H. Inoue T. Mokudai K. Ohmura T. Aizawa S. Hanada Photoinduced properties of anodized Ti alloys for biomaterial applications Scientific Reports |
| title | Photoinduced properties of anodized Ti alloys for biomaterial applications |
| title_full | Photoinduced properties of anodized Ti alloys for biomaterial applications |
| title_fullStr | Photoinduced properties of anodized Ti alloys for biomaterial applications |
| title_full_unstemmed | Photoinduced properties of anodized Ti alloys for biomaterial applications |
| title_short | Photoinduced properties of anodized Ti alloys for biomaterial applications |
| title_sort | photoinduced properties of anodized ti alloys for biomaterial applications |
| url | https://doi.org/10.1038/s41598-023-41189-z |
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