Nitrogen-iron co-doped titania films as solar light sensitive photocatalysts

2021 ◽  
Vol 28 (2) ◽  
Keyword(s):  
Solar Light ◽  
Titania Films ◽  
Doped Titania ◽  
Co Doped

scholarly journals Effect of Synthesis Conditions of Nitrogen and Platinum Co-Doped Titania Films on the Photocatalytic Performance under Simulated Solar Light

Catalysts ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1074
Author(s):  
Daryna Ihnatiuk ◽  
Camilla Tossi ◽  
Ilkka Tittonen ◽  
Oksana Linnik
Keyword(s):  
Sol Gel ◽  
Visible Region ◽  
Solar Light ◽  
Photocatalytic Decomposition ◽  
Homogeneous Distribution ◽  
Synthesis Conditions ◽  
Simulated Solar Light ◽  
Titania Films ◽  
Doped Titania ◽  
Co Doped

Platinum and nitrogen co-doped titania films of different surface morphologies obtained via a sol-gel process have been tested for tetracycline hydrochloride photocatalytic decomposition under simulated solar light. Titania crystallization to anatase is shown by XRD for all films. A shift of the bandgap edge toward the visible region in absorption spectra and, consequently, a narrowing of the bandgap is observed for some films doped with nitrogen and/or exposed to UV pretreatment. The surface peculiarities of the samples are presented by an SEM and TEM investigation. The surface saturation by Pt and N with a homogeneous distribution of Pt ions on the surface as well as bulk as established by XPS and EDS data can be achieved with a certain synthesis procedure. The influence of the platinum content and of the pretreatment procedure on the state and atomic surface concentration of incorporated nitrogen and platinum is studied by XPS analysis: substitutional and interstitial nitrogen, non-metal containing fragments, Pt0, Pt2+ and Pt4+ ions. The photocatalytic activity of the films is ruled by the presence of Pt2+ ions and N rather than Pt0. The formation of the polycrystalline titania structure and Pt0 nanoparticles (NPs) is confirmed by TEM and electron diffraction images. The mechanism of primary photocatalytic processes is proposed.

Nonporous Nitrogen and Ruthenium Co-Doped Titania Films for Photocatalysis

2019 ◽  
Vol 18 (03n04) ◽  
pp. 1940043 ◽  
Author(s):  
O. Linnik ◽  
L. Khoroshko
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Structural Properties ◽  
Sol Gel ◽  
High Photocatalytic Activity ◽  
Gel Technique ◽  
Titania Films ◽  
Doped Titania ◽  
Co Doped

Nitrogen and ruthenium co-doped titania films synthesized by sol–gel technique exhibit high photocatalytic activity under both UV and visible light. Incorporation of nitrogen and ruthenium ions in titania lattice is proven by XPS. Both doping agents affected the structural properties of the films.

Nitrogen-fluorine co-doped titania inverse opals for enhanced solar light driven photocatalysis

Nanoscale ◽  
2015 ◽  
Vol 7 (43) ◽  
pp. 18259-18270 ◽  
Author(s):  
T. K. Rahul ◽  
N. Sandhyarani
Keyword(s):  
Solar Light ◽  
Inverse Opals ◽  
Doped Titania ◽  
Co Doped

Visible light induced wetting of nanostructured N–F co-doped titania films

2011 ◽  
Vol 10 (3) ◽  
pp. 350-354 ◽  
Author(s):  
A. G. Kontos ◽  
M. Pelaez ◽  
V. Likodimos ◽  
N. Vaenas ◽  
D. D. Dionysiou ◽  
...  
Keyword(s):  
Visible Light ◽  
Titania Films ◽  
Doped Titania ◽  
Co Doped

EELS study of Fe- or Co-doped titania nanosheets

Microscopy ◽  
2014 ◽  
Vol 64 (2) ◽  
pp. 77-85 ◽  
Author(s):  
Megumi Ohwada ◽  
Koji Kimoto ◽  
Yasuo Ebina ◽  
Takayoshi Sasaki
Keyword(s):  
Doped Titania ◽  
Co Doped
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