scholarly journals Degradation of Semiconductor Manufacturing Wastewater by Using a Novel Magnetic Composite TiO2/Fe3O4Photoreactor Design

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Chen-Yu Chang ◽  
Yung-Hsu Hsieh
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Semiconductor Manufacturing ◽  
Sol Gel ◽  
Fluorescent Light ◽  
Magnetic Composite ◽  
Ultraviolet A ◽  
Gel Method ◽  
Sol Gel Method

The purpose of this research is to develop a photocatalytic TiO2that can be activated by visible light and can be conveniently recollected for reusing. This research synthesizes the 20 to 40 nm TiO2/Fe3O4particles with magnetization of 5.8 emu/g using the modified sol-gel method followed by 500°C calcinations. The experiment verified that visible fluorescent light (VFL, contains no UV-A) could activate the photocatalytic activity of TiO2/Fe3O4particles as did ultraviolet A light (UV-A, 360 nm). Regular magnets can be used to separate TiO2/Fe3O4particles from solution. The results indicate that VFL-sirradiated TiO2/Fe3O4particles could decompose isopropanol (IPA) in the absence of UV-A and the issue of TiO2/Fe3O4recollection from water for reusing is also resolved.

scholarly journals Novel N-doped ZrO2 with enhanced visible-light photocatalytic activity for hydrogen production and degradation of organic dyes

RSC Advances ◽  
2018 ◽  
Vol 8 (13) ◽  
pp. 6752-6758 ◽  
Author(s):  
Yuanyang Wang ◽  
Yinghua Zhang ◽  
Haiqiang Lu ◽  
Yanxin Chen ◽  
Zhenmin Liu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Visible Light ◽  
Nitrogen Source ◽  
Organic Dyes ◽  
Low Cost ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Visible Light Photocatalytic

Two new types of N-doped ZrO2 photocatalysts ZON and AZON have been synthesized using ethylenediamine as the nitrogen source by a facile and low-cost sol–gel method.

scholarly journals Visible-enhanced photocatalytic performance of CuWO4/WO3 hetero-structures: incorporation of plasmonic Ag nanostructures

2018 ◽  
Vol 42 (13) ◽  
pp. 11109-11116 ◽  
Author(s):  
R. Salimi ◽  
A. A. Sabbagh Alvani ◽  
N. Naseri ◽  
S. F. Du ◽  
D. Poelman
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Sol Gel ◽  
Light Irradiation ◽  
Photo Degradation ◽  
Gel Method ◽  
Sol Gel Method

A new plasmonic Ag hybridized CuWO4/WO3 heterostructured nanocomposite was successfully synthesized via a ligand-assisted sol gel method and the photocatalytic activity was evaluated by photo-degradation of methylene blue (MB) under visible light irradiation.

Factors affecting photocatalytic activity of visible light-responsive titanium dioxide doped with chromium ions

2018 ◽  
Vol 8 (18) ◽  
pp. 4726-4733 ◽  
Author(s):  
Naoto Nishiyama ◽  
Keisuke Kozasa ◽  
Toshihiro Okajima ◽  
Mamoru Fujitsuka ◽  
Tetsuro Majima ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Sol Gel ◽  
Factors Affecting ◽  
Gel Method ◽  
Sol Gel Method ◽  
Chromium Ions

Titanium dioxide doped with Cr ions (Cr–TiO2) was synthesized by a sol–gel method, with only water as the solvent, and dialysis.

Photocatalytic Activity of Sm, Zr Co-Doped TiO2 Synthesized by Ultrasonic Assisted Sol-Gel Method

2013 ◽  
Vol 631-632 ◽  
pp. 399-403
Author(s):  
Xi Ming Luo ◽  
Fen Fen Li ◽  
Hong Tao Gao
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Sem Images ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Ultrasonic Assisted ◽  
Uv Visible

Sm, Zr doped nanocrystalline TiO2 powers were prepared successfully by a facile ultrasonic assisted sol-gel method. The products were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. X-ray diffraction peaks could be assigned to anatase TiO2, which confirms the crystallinity of the as-prepared samples. The SEM images demonstrated that the crystalinity is formed with spherical aggregates with average diameters ranging from 10 to 20 nm. The photocatalytic activity was studied on the photocatalytic degradation of methyl orange (MO) aqueous solution irradiated with UV-visible light. Under UV-visible light irradiation, the photocatalytic performances of the doped samples were much better than that of pure TiO2, and the co-dopant showed highest. It demonstrated that a strong Sm-Zr synergistic interaction might play a decisive role in driving the excellent photocatalytic performance of TiO2.

Synthesis, characterization and photocatalytic activity of magnetically separable γ-Fe2O3/N,Fe codoped TiO2 heterojunction for degradation of Reactive Blue 4 dye

RSC Advances ◽  
2015 ◽  
Vol 5 (76) ◽  
pp. 61623-61630 ◽  
Author(s):  
Navneet Kaur ◽  
Satwant Kaur Shahi ◽  
Vasundhara Singh
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Codoped Tio2 ◽  
Magnetically Separable ◽  
Reactive Blue 4

Nanocrystalline undoped, N-doped and N,Fe codoped TiO2 have been synthesized using a sol–gel method for the photocatalytic degradation of Reactive Blue 4 dye under visible light, with N,Fe codoped TiO2 exhibiting the best activity.

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