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The role of lattice defects on the optical properties of TiO[sub]2 nanotube arrays for synergistic water splitting
Manel Machreki, Takwa Chouki, Georgi Tyuliev, Mattia Fanetti, Matjaž Valant, Denis Arčon, Matej Pregelj, Saim Emin, 2023, izvirni znanstveni članek

Opis: In this study, we report a facile one-step chemical method to synthesize reduced titanium dioxide (TiO2) nanotube arrays (NTAs) with point defects. Treatment with NaBH4 introduces oxygen vacancies (OVs) in the TiO2 lattice. Chemical analysis and optical studies indicate that the OV density can be significantly increased by changing reduction time treatment, leading to higher optical transmission of the TiO2 NTAs and retarded carrier recombination in the photoelectrochemical process. A cathodoluminescence (CL) study of reduced TiO2 (TiO2–x) NTAs revealed that OVs contribute significantly to the emission bands in the visible range. It was found that the TiO2 NTAs reduced for a longer duration exhibited a higher concentration of OVs. A typical CL spectrum of TiO2 was deconvoluted to four Gaussian components, assigned to F, F+, and Ti3+ centers.
Ključne besede: TiO2 nanotubes, defects, cathodoluminescence
Objavljeno v RUNG: 13.12.2023; Ogledov: 285; Prenosov: 7
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Poslovni načrt novoustanovljenega podjetja Suhimontaž
Matej Pregelj, 2010, diplomsko delo

Ključne besede: diplomske naloge, poslovni načrti, trg, zaposleni, ciljni kupci
Objavljeno v RUNG: 15.10.2013; Ogledov: 5184; Prenosov: 500
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