Loading Effect of Ag Nanoparticles on Photocatalytic Activity of TiO₂ Nanorod Arrays Prepared by Hydrothermal Method

• Autorzy: Lee Kwangmin , Yoo Daeheung , Zakiyuddin Ahmad

Identyfikatory

DOI

10.24425/amm.2021.136374

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

TiO2 nanorods; Ag nanoparticles; hydrothermal; Electrochemical impedance spectroscopy; UV-Vis spectroscopy

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2021
• Tom: Vol. 66, iss. 3
• Strony: 751--754
• Opis fizyczny: Bibliogr. 13 poz., rys., tab., wykr.

Twórcy

autor

Lee Kwangmin

• Chonnam National University, School of Materials Science and Engineering, Gwangju 61186, Republic of Korea

• https://orcid.org/0000-0002-2826-1080

autor

Yoo Daeheung

• Chonnam National University, School of Materials Science and Engineering, Gwangju 61186, Republic of Korea
• Quality Tech. Dept. Chosun Refractories Co., Ltd, Republic of Korea

autor

Zakiyuddin Ahmad

• Universitas Indonesia, Department of Metallurgical and Materials Engineering, Depok 16425 Indonesia

• https://orcid.org/0000-0002-1104-2498

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).