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- Title
Synergy of Nd:YAG Picosecond Pulsed Laser Irradiation and Electrochemical Anodization in the Formation of TiO 2 Nanostructures for the Photocatalytic Degradation of Pesticide Carbofuran.
- Authors
Tošić, Miloš; Rajić, Vladimir; Pjević, Dejan; Stojadinović, Stevan; Krstulović, Nikša; Dimitrijević-Branković, Suzana; Momčilović, Miloš
- Abstract
This study proposes a simple and controlled method for producing TiO2 with phase junction, oxygen vacancies, and Ti3+ by combining picosecond pulsed laser irradiation and electrochemical anodization. Ti mesh was pretreated by irradiating with a picosecond pulsed laser technique using an Nd:YAG laser (1064 nm) at two fluencies, 15 J/cm2 and 30 J/cm2. The samples were then subjected to electrochemical anodization to form TiO2 nanotube arrays on the previously laser-treated surface. This study will investigate the possibility of forming TiO2 nanotube arrays on a pre-laser-treated Ti substrate and determine their physicochemical and photocatalytic properties. The samples were characterized by FESEM, XRD, Raman, XPS, and UV-Vis DRS. UV-Vis spectroscopy was used to observe the progress of photocatalytic degradation for all samples, and degradation products were determined using GC-MS. With the synergistic effects of phase junction, oxygen vacancies, and Ti3+, the laser-treated TiO2 with 30 J/cm2 showed a higher photocatalytic degradation rate (85.1%) of the pesticide carbofuran compared to non-laser-treated TiO2 (54.8%), remaining stable during successive degradation cycles, which has promising practical applications.
- Subjects
ULTRASHORT laser pulses; PHOTODEGRADATION; CARBOFURAN; TITANIUM dioxide; PESTICIDES; ND-YAG lasers; PULSED lasers
- Publication
Photonics, 2024, Vol 11, Issue 3, p284
- ISSN
2304-6732
- Publication type
Article
- DOI
10.3390/photonics11030284