Journal
CATALYSTS
Volume 10, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/catal10060672
Keywords
titanium vacancies; phenol degradation; scavengers; magnetic photocatalysts; platinum-modified defective TiO2
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Funding
- Polish National Science Centre
- NCN [2016/23/D/ST5/01021]
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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-TiO(2)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)-O-center dot, and(center dot)O(2)(-)) in the studied photocatalytic process were investigated.
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