Origin of the visible light absorption of Co2+and NH4+co-doped hydrogen titanate nanotube thin films

2013 ◽  
Vol 250 (8) ◽  
pp. 1592-1598 ◽  
Author(s):  
Yongliang An ◽  
Zhonghua Li ◽  
Dongjun Wang ◽  
Jun Shen
Keyword(s):  
Thin Films ◽  
Visible Light ◽  
Light Absorption ◽  
Visible Light Absorption ◽  
Titanate Nanotube ◽  
Hydrogen Titanate ◽  
Co Doped

scholarly journals Synthesis of pure and C/S/N co-doped Titania on Al mesh and their photocatalytic usage in Benzene degradation

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
S. Modanlu ◽  
A. Shafiekhani
Keyword(s):  
Thin Films ◽  
Visible Light ◽  
Surface Area ◽  
Light Absorption ◽  
Average Crystalline Size ◽  
Light Illumination ◽  
Visible Light Absorption ◽  
Benzene Degradation ◽  
Doped Titania ◽  
Co Doped

Abstract Pure and co-doped Titania thin films were prepared on aluminum substrates through the sol-gel method. The co-doped sample showed higher photocatalytic activity on benzene degradation compared to pure TiO2 under visible light illumination. XRD results showed the anatase phase for both TiO2 and co-doped TiO2 lattices with an average crystalline size of 12.9 and 10.4 nm, respectively. According to the UV-visible absorption spectra results, co-doped Titania showed higher visible light absorption compared to pure Titania. The synergistic effect of dopants caused a redshift to visible light absorption and also the lifetime of the photogenerated electron-hole were increased by induced electron levels in Titania lattice. The novelty of this study is the reactor’s specific design. We employed Al mesh as thin film substrate for 3 main reasons, first, the large surface area of the Al mesh causes to increase specific surface area of the photocatalysts, also it is a formable substrate which can be engineered geometrically to decrease the shadow spots so the thin films will receive the highest light irradiation. Also, the Al mesh flexibility facilitates the procedure of reactor design to reach a minimum pressure drop of airflow while it is installed in the air conditioners or HVAC systems.

Visible light absorption of (Fe, C/N) co-doped NaTaO${}_{3}$: DFT+ U *

2017 ◽  
Vol 26 (8) ◽  
pp. 087102 ◽  
Author(s):  
Peng-Li Tian ◽  
Zhen-Yi Jiang ◽  
Xiao-Dong Zhang ◽  
Bo Zhou ◽  
Ya-Ru Dong ◽  
...  
Keyword(s):  
Visible Light ◽  
Light Absorption ◽  
Visible Light Absorption ◽  
Co Doped

The Photocatalytic Properties of Fe3+ and N Co-Doped TiO2 Micro/Nanofiber Film for Dye Waste Water Decomposition

2011 ◽  
Vol 356-360 ◽  
pp. 853-856 ◽  
Author(s):  
Qiao Zhen Yu ◽  
Xiang Jun Jin ◽  
Shao Yang Li ◽  
Lei Wang ◽  
Kun Long Liang
Keyword(s):  
Waste Water ◽  
Visible Light ◽  
Light Absorption ◽  
Oxygen Demand ◽  
Photocatalytic Efficiency ◽  
Energy Dispersion Spectroscopy ◽  
Visible Light Absorption ◽  
X Ray ◽  
Nano Fiber ◽  
Co Doped

To obtain a TiO2photocatalyst with high photocatalytic efficiency under visible irradiation and good reusability, the Fe3+and N co-doped TiO2micro/nano fiber films were fabricated by electrospinning and calcinations. The morphologies and structures of the resulting samples were analyzed by scanning electron microscopy (SEM), x-ray diffraction and x-ray energy dispersion spectroscopy (EDS). The absorbance and chemical oxygen demand (COD) were characterized respectively by UV–visible spectrophotometer and COD Rapid Tester. The results show that the Fe3+and N co-doped TiO2micro/nano fiber had a multi-porous structure with an average diameter of about 45 to 506 nm. The crystalinity degrees, visible light absorption of these films were affected by the dosage of Fe3+and N co-doping (DFN). Moreover, these films exhibited high photocatalytic activity for the degradation of dye waste water under sunlight and it was related to DFN. As DFN was 0.5 %, it has highest crystalinity degree, largest visible light absorption and highest photocatalytic efficiency on dye waste water. The decolor rate of the dye waste water was as high as 67.6 % and its COD decreased from 2800±200 to 236.40 ± 15.61, when the photocatalytic time was only 3 h.

Origin of significant visible-light absorption properties of Mn-doped TiO2 thin films

2012 ◽  
Vol 60 (5) ◽  
pp. 1974-1985 ◽  
Author(s):  
X.H. Xia ◽  
L. Lu ◽  
A.S. Walton ◽  
M. Ward ◽  
X.P. Han ◽  
...  
Keyword(s):  
Thin Films ◽  
Visible Light ◽  
Light Absorption ◽  
Tio2 Thin Films ◽  
Absorption Properties ◽  
Visible Light Absorption ◽  
Doped Tio2 ◽  
Mn Doped

scholarly journals Cu–Co‐codoped titanate/TiO 2 nanocomposite thin films for enhanced visible light absorption

2019 ◽  
Vol 14 (8) ◽  
pp. 848-851 ◽  
Author(s):  
Yongliang An ◽  
Dongjun Wang ◽  
Dongsong Yin ◽  
Liang Song ◽  
Yongsheng Chen ◽  
...  
Keyword(s):  
Thin Films ◽  
Visible Light ◽  
Light Absorption ◽  
Visible Light Absorption ◽  
Nanocomposite Thin Films

Phosphorus- and fluorine-co-doped carbon nitride: modulated visible light absorption, charge carrier kinetics and boosted photocatalytic hydrogen evolution

2021 ◽  
Author(s):  
Pinnan Li ◽  
Mingya Wang ◽  
Shushu Huang ◽  
Yiguo Su
Keyword(s):  
Charge Carrier ◽  
Visible Light ◽  
Band Gap ◽  
Light Absorption ◽  
Carbon Nitride ◽  
Light Response ◽  
Visible Light Absorption ◽  
Visible Light Response ◽  
Band Gap Structure ◽  
Co Doped

A phosphorus and fluorine co-doped carbon nitride photocatalyst was constructed to modulate the band gap structure and visible light response ability of g-C3N4 as well as the photocatalytic H2 evolution activity.

Comparison of organic and inorganic layers for structural templating of pentacene thin films

2020 ◽  
Vol 7 (1) ◽  
pp. 289-298 ◽  
Author(s):  
Dong Kuk Kim ◽  
Daphné Lubert-Perquel ◽  
Sandrine Heutz
Keyword(s):  
Thin Films ◽  
Visible Light ◽  
Work Function ◽  
Functional Properties ◽  
Light Absorption ◽  
Molecular Orientation ◽  
Effective Control ◽  
Visible Light Absorption ◽  
Inorganic Layers

Effective control over the molecular orientation of pentacene was achieved with copper(i) iodide and results in a change in the functional properties with increases in both visible light absorption and work function.

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