scholarly journals Cu(ii) nanocluster-grafted, Nb-doped TiO2 as an efficient visible-light-sensitive photocatalyst based on energy-level matching between surface and bulk states

2014 ◽  
Vol 2 (33) ◽  
pp. 13571-13579 ◽  
Author(s):  
Min Liu ◽  
Xiaoqing Qiu ◽  
Kazuhito Hashimoto ◽  
Masahiro Miyauchi
Keyword(s):  
Energy Level ◽  
Visible Light ◽  
Doped Tio2

Efficient visible-light-sensitive TiO2 photocatalysts were developed based on the energy level matching between surface-grafted Cu(ii) nanoclusters and bulk-doped Nb ions.

Nitrogen-doped titanium dioxide (N-doped TiO2) for visible light photocatalysis

2016 ◽  
Vol 40 (4) ◽  
pp. 3000-3009 ◽  
Author(s):  
Sajid Ali Ansari ◽  
Mohammad Mansoob Khan ◽  
Mohd Omaish Ansari ◽  
Moo Hwan Cho
Keyword(s):  
Titanium Dioxide ◽  
Energy Level ◽  
Visible Light ◽  
Visible Light Photocatalysis ◽  
Doped Tio2 ◽  
Nitrogen Doped ◽  
Photocatalytic Application ◽  
Doped Titanium Dioxide ◽  
Nitrogen Doped Titanium Dioxide

Energy level diagrams for undoped and N-doped TiO2 for visible light induced photocatalytic application.

Visible Light Active Ce-doped TiO2 Nanoparticles for Photocatalytic Degradation of Methylene Blue

2016 ◽  
Vol 13 (1) ◽  
pp. 110-116 ◽  
Author(s):  
Rani P. Barkul ◽  
Farah-Naaz A. Shaikh ◽  
Sagar D. Delekar ◽  
Meghshyam K. Patil
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Tio2 Nanoparticles ◽  
Doped Tio2 ◽  
Visible Light Active

Boron-Doped TiO2 (B-TiO2): Visible-Light Photocatalytic Di-functionalization of Alkenes and Alkynes

2021 ◽  
Author(s):  
Mona Hosseini-Sarvari ◽  
Atefe Valikhani
Keyword(s):  
Visible Light ◽  
Doped Tio2 ◽  
Boron Doped ◽  
Novel Method ◽  
Visible Light Photocatalytic

Boron doped TiO2 (B-TiO2) was prepared, characterized, and successfully applied as a reusable, inexpensive, available, and heterogeneous nano photocatalyst under visible light for a novel method of construction of phenacyl...

scholarly journals Green Synthesis of N/Zr Co-Doped TiO2 for Photocatalytic Degradation of p-Nitrophenol in Wastewater

Catalysts ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 235
Author(s):  
Hayette Benkhennouche-Bouchene ◽  
Julien G. Mahy ◽  
Cédric Wolfs ◽  
Bénédicte Vertruyen ◽  
Dirk Poelman ◽  
...  
Keyword(s):  
Visible Light ◽  
Tio2 Nanoparticles ◽  
Sol Gel ◽  
Visible Region ◽  
Chemical Properties ◽  
Pure Tio2 ◽  
Molar Ratio ◽  
Xps Spectra ◽  
Doped Tio2 ◽  
Co Doped

TiO2 prepared by a green aqueous sol–gel peptization process is co-doped with nitrogen and zirconium to improve and extend its photoactivity to the visible region. Two nitrogen precursors are used: urea and triethylamine; zirconium (IV) tert-butoxide is added as a source of zirconia. The N/Ti molar ratio is fixed regardless of the chosen nitrogen precursor while the quantity of zirconia is set to 0.7, 1.4, 2, or 2.8 mol%. The performance and physico-chemical properties of these materials are compared with the commercial Evonik P25 photocatalyst. For all doped and co-doped samples, TiO2 nanoparticles of 4 to 8 nm of size are formed of anatase-brookite phases, with a specific surface area between 125 and 280 m2 g−1 vs. 50 m2 g−1 for the commercial P25 photocatalyst. X-ray photoelectron (XPS) measurements show that nitrogen is incorporated into the TiO2 materials through Ti-O-N bonds allowing light absorption in the visible region. The XPS spectra of the Zr-(co)doped powders show the presence of TiO2-ZrO2 mixed oxide materials. Under visible light, the best co-doped sample gives a degradation of p-nitrophenol (PNP) equal to 70% instead of 25% with pure TiO2 and 10% with P25 under the same conditions. Similarly, the photocatalytic activity improved under UV/visible reaching 95% with the best sample compared to 50% with pure TiO2. This study suggests that N/Zr co-doped TiO2 nanoparticles can be produced in a safe and energy-efficient way while being markedly more active than state-of-the-art photocatalytic materials under visible light.

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