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- Title
Defective TiO2 Core-Shell Magnetic Photocatalyst Modified with Plasmonic Nanoparticles for Visible Light-Induced Photocatalytic Activity.
- Authors
Bielan, Zuzanna; Sulowska, Agnieszka; Dudziak, Szymon; Siuzdak, Katarzyna; Ryl, Jacek; Zielińska-Jurek, Anna
- Abstract
In the presented work, for the first time, the metal-modified defective titanium(IV) oxide nanoparticles with well-defined titanium vacancies, was successfully obtained. Introducing platinum and copper nanoparticles (NPs) as surface modifiers of defective d-TiO2 significantly increased the photocatalytic activity in both UV-Vis and Vis light ranges. Moreover, metal NPs deposition on the magnetic core allowed for the effective separation and reuse of the nanometer-sized photocatalyst from the suspension after the treatment process. The obtained Fe3O4@SiO2/d-TiO2-Pt/Cu photocatalysts were characterized by X-ray diffractometry (XRD) and specific surface area (BET) measurements, UV-Vis diffuse reflectance spectroscopy (DR-UV/Vis), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). Further, the mechanism of phenol degradation and the role of four oxidative species (h+, e−, •OH, and •O2−) in the studied photocatalytic process were investigated.
- Subjects
PLATINUM nanoparticles; X-ray photoelectron spectroscopy; REFLECTANCE spectroscopy; TRANSMISSION electron microscopy; MAGNETIC cores
- Publication
Catalysts (2073-4344), 2020, Vol 10, Issue 6, p672
- ISSN
2073-4344
- Publication type
Article
- DOI
10.3390/catal10060672