Self-floating Cu/N co-doped TiO2 /diatomite granule composite with enhanced visible-light-responsive photoactivity and reusability

2018 ◽  
Vol 94 (4) ◽  
pp. 1210-1219 ◽  
Author(s):  
Yan Chen ◽  
Qiong Wu ◽  
Jun Wang ◽  
Youtao Song
Keyword(s):  
Visible Light ◽  
Doped Tio2 ◽  
Co Doped

A New Route for the Synthesis of Visible-Light Driven Ag,V Co-Doped TiO2 for Degradation of Organic Pollutant

2020 ◽  
Vol 94 (13) ◽  
pp. 2715-2722
Author(s):  
M. K. Ntobeng ◽  
R. Akbarzadeh
Keyword(s):  
Visible Light ◽  
Organic Pollutant ◽  
Doped Tio2 ◽  
Visible Light Driven ◽  
Co Doped

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.

Synthesis, characterization and application of bismuth and boron Co-doped TiO2: A visible light active photocatalyst

2013 ◽  
Vol 217 ◽  
pp. 108-118 ◽  
Author(s):  
Segomotso Bagwasi ◽  
Baozhu Tian ◽  
Jinlong Zhang ◽  
Muhammad Nasir
Keyword(s):  
Visible Light ◽  
Doped Tio2 ◽  
Visible Light Active ◽  
Co Doped

Fluorine and phosphorus co-doped TiO2(001) nanosheets as a high-stability visible light-driven photocatalyst

2021 ◽  
pp. 106719
Author(s):  
Shuo Chen ◽  
Shu-Zhe Zhang ◽  
Hong-Chao Hao ◽  
Ya-Li Chen ◽  
Hong Jiang
Keyword(s):  
Visible Light ◽  
High Stability ◽  
Doped Tio2 ◽  
Visible Light Driven ◽  
Co Doped

Ni-Bi co-doped TiO2 as highly visible light response nano-photocatalyst for CO2 photo-reduction in a batch photo-reactor

2020 ◽  
Vol 41 ◽  
pp. 101289
Author(s):  
Reza Nematollahi ◽  
Cyrus Ghotbi ◽  
Farhad Khorasheh ◽  
Afsanehsadat Larimi
Keyword(s):  
Visible Light ◽  
Light Response ◽  
Doped Tio2 ◽  
Visible Light Response ◽  
Co Doped

scholarly journals Enhanced Photocatalytic Properties of PET Filaments Coated with Ag-N Co-Doped TiO2 Nanoparticles Sensitized with Disperse Blue Dyes

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 987 ◽  
Author(s):  
Hui Zhang ◽  
Qi Tang ◽  
Qingshan Li ◽  
Qingwen Song ◽  
Hailiang Wu ◽  
...  
Keyword(s):  
Visible Light ◽  
Tio2 Nanoparticles ◽  
Visible Light Irradiation ◽  
Reaction Rate Constant ◽  
Light Irradiation ◽  
Photocatalytic Properties ◽  
Blue Dye ◽  
Dye Sensitization ◽  
Doped Tio2 ◽  
Co Doped

In this study, the effects of disperse blue dye-sensitization on the photocatalytic properties of the Ag-N co-doped TiO2 nanoparticles loaded on polyethylene terephthalate (PET) filaments are investigated under visible light irradiation. The microstructure and photocatalytic properties of the as-synthesized TiO2 nanocomposites, as well as the as-prepared PET filaments, are systematically characterized. The photocatalytic performance of the PET filaments coated with the Ag-N co-doped TiO2 nanoparticles sensitized with disperse blue dyes is evaluated via its capacity of photo-degrading methyl orange (MO) dyes under visible light irradiation. It is found that the holes are the predominant reactive radical species and the hydroxyl and superoxide radicals play a subordinate role in the photocatalytic reaction process. The reaction rate constant of the photocatalytic composite filaments is nearly 4.0 times higher than that of the PET filaments loaded solely with TiO2 nanoparticles. The resultant photocatalytic composite filaments are evident to be capable of repeatedly photo-degrading MO dyes without losing its photocatalytic activity significantly.

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