Loading Effect of Ag Nanoparticles on Photocatalytic Activity of TiO2 Nanorod Arrays Prepared by Hydrothermal Method
Rutile-TiO2 nanorod thin films were formed on Ti disks via alkali treatment in NaOH solutions followed by heat treatment at 700°C. Ag nanoparticles were loaded on nanorods using a photo-reduction method to improve the photocatalytic properties of the prepared specimen. The surface characterization a...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2021-09-01
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| Series: | Archives of Metallurgy and Materials |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/119247/PDF/AMM-2021-3-16-Kwangmin%20Lee.pdf |
| _version_ | 1818490410756997120 |
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| author | Kwangmin Lee Daeheung Yoo Ahmad Zakiyuddin |
| author_facet | Kwangmin Lee Daeheung Yoo Ahmad Zakiyuddin |
| author_sort | Kwangmin Lee |
| collection | DOAJ |
| description | Rutile-TiO2 nanorod thin films were formed on Ti disks via alkali treatment in NaOH solutions followed by heat treatment at 700°C. Ag nanoparticles were loaded on nanorods using a photo-reduction method to improve the photocatalytic properties of the prepared specimen. The surface characterization and the photo-electrochemical properties of the Ag-loaded TiO2 nanorods were investigated using a field-emission scanning electron microscope (FE-SEM), X-ray photoelectron spectroscopy (XPS), UV-Vis spectroscopy and electrochemical impedance spectroscopy (EIS). The TiO2 nanorods obtained after the heat treatment were 80 to 180 nm thick and 1 μm long. The thickness of the nanorods increased with the NaOH concentration. The UV-Vis spectra exhibit a shift in the absorption edge of the Ag-loaded TiO2 to the visible light range and further narrowing of the bandgap. The decrease in the size of the capacitive loops in the EIS spectra showed that the Ag loading effectively improved the photocatalytic activity of the TiO2 nanorods. |
| first_indexed | 2024-12-10T17:16:41Z |
| format | Article |
| id | doaj.art-2e8ab5bc65824333ac0a6038bde6527d |
| institution | Directory Open Access Journal |
| issn | 2300-1909 |
| language | English |
| last_indexed | 2024-12-10T17:16:41Z |
| publishDate | 2021-09-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Metallurgy and Materials |
| spelling | doaj.art-2e8ab5bc65824333ac0a6038bde6527d2022-12-22T01:40:06ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092021-09-01vol. 66No 3751754https://doi.org/10.24425/amm.2021.136374Loading Effect of Ag Nanoparticles on Photocatalytic Activity of TiO2 Nanorod Arrays Prepared by Hydrothermal MethodKwangmin Lee0https://orcid.org/0000-0002-2826-1080Daeheung Yoo1Ahmad Zakiyuddin2https://orcid.org/0000-0002-1104-2498Chonnam National University, School of Materials Science and Engineering, Gwangju 61186, Republic of KoreaChonnam National University, School of Materials Science and Engineering, Gwangju 61186, Republic of KoreaUniversitas Indonesia, Department of Metallurgical and Materials Engineering, Depok 16425 IndonesiaRutile-TiO2 nanorod thin films were formed on Ti disks via alkali treatment in NaOH solutions followed by heat treatment at 700°C. Ag nanoparticles were loaded on nanorods using a photo-reduction method to improve the photocatalytic properties of the prepared specimen. The surface characterization and the photo-electrochemical properties of the Ag-loaded TiO2 nanorods were investigated using a field-emission scanning electron microscope (FE-SEM), X-ray photoelectron spectroscopy (XPS), UV-Vis spectroscopy and electrochemical impedance spectroscopy (EIS). The TiO2 nanorods obtained after the heat treatment were 80 to 180 nm thick and 1 μm long. The thickness of the nanorods increased with the NaOH concentration. The UV-Vis spectra exhibit a shift in the absorption edge of the Ag-loaded TiO2 to the visible light range and further narrowing of the bandgap. The decrease in the size of the capacitive loops in the EIS spectra showed that the Ag loading effectively improved the photocatalytic activity of the TiO2 nanorods.https://journals.pan.pl/Content/119247/PDF/AMM-2021-3-16-Kwangmin%20Lee.pdftio2 nanorodsag nanoparticleshydrothermalelectrochemical impedance spectroscopyuv-vis spectroscop |
| spellingShingle | Kwangmin Lee Daeheung Yoo Ahmad Zakiyuddin Loading Effect of Ag Nanoparticles on Photocatalytic Activity of TiO2 Nanorod Arrays Prepared by Hydrothermal Method Archives of Metallurgy and Materials tio2 nanorods ag nanoparticles hydrothermal electrochemical impedance spectroscopy uv-vis spectroscop |
| title | Loading Effect of Ag Nanoparticles on Photocatalytic Activity of TiO2 Nanorod Arrays Prepared by Hydrothermal Method |
| title_full | Loading Effect of Ag Nanoparticles on Photocatalytic Activity of TiO2 Nanorod Arrays Prepared by Hydrothermal Method |
| title_fullStr | Loading Effect of Ag Nanoparticles on Photocatalytic Activity of TiO2 Nanorod Arrays Prepared by Hydrothermal Method |
| title_full_unstemmed | Loading Effect of Ag Nanoparticles on Photocatalytic Activity of TiO2 Nanorod Arrays Prepared by Hydrothermal Method |
| title_short | Loading Effect of Ag Nanoparticles on Photocatalytic Activity of TiO2 Nanorod Arrays Prepared by Hydrothermal Method |
| title_sort | loading effect of ag nanoparticles on photocatalytic activity of tio2 nanorod arrays prepared by hydrothermal method |
| topic | tio2 nanorods ag nanoparticles hydrothermal electrochemical impedance spectroscopy uv-vis spectroscop |
| url | https://journals.pan.pl/Content/119247/PDF/AMM-2021-3-16-Kwangmin%20Lee.pdf |
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