scholarly journals Effect of Iron Doping on Photocatalytic Activity of Boron Oxide Processed Using Polyvinyl Borate Precursor

2019 ◽  
Author(s):  
Özcan Köysüren
Keyword(s):  
Photocatalytic Activity ◽  
Boron Oxide ◽  
Iron Doping

scholarly journals Facile Synthesis of Fe-Doped Titanate Nanotubes with Enhanced Photocatalytic Activity for Castor Oil Oxidation

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Guozhu Fu ◽  
Gang Wei ◽  
Yanqiu Yang ◽  
WeiCheng Xiang ◽  
Ning Qiao
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Castor Oil ◽  
Titanate Nanotubes ◽  
Iron Doping ◽  
Oil Oxidation ◽  
Facile Synthesis ◽  
Iron Doped

Iron-doped titanate nanotubes were synthesized by hydrothermal method, and the photocatalytic activity was greatly enhanced by iron doping.

The effect of iron doping on the photocatalytic activity of a Bi2WO6–BiVO4composite

RSC Advances ◽  
2016 ◽  
Vol 6 (59) ◽  
pp. 54060-54068 ◽  
Author(s):  
Saranyoo Chaiwichian ◽  
Khatcharin Wetchakun ◽  
Sukon Phanichphant ◽  
Wiyong Kangwansupamonkon ◽  
Natda Wetchakun
Keyword(s):  
Photocatalytic Activity ◽  
Separation Efficiency ◽  
Photogenerated Electron ◽  
Iron Doping ◽  
Electron Hole

The formation of Fe-doped Bi2WO6–BiVO4composites could improve the separation efficiency of photogenerated electron–hole pairs, then increasing its photocatalytic activity.

scholarly journals Photocatalytic Activity of Iron Doping TiO2 Prepared by Several Methods

2001 ◽  
Vol 17 (03) ◽  
pp. 282-285 ◽  
Author(s):  
Shui Miao ◽  
◽  
Yue Lin-Hai ◽  
Xu Zhe-De
Keyword(s):  
Photocatalytic Activity ◽  
Iron Doping

scholarly journals Effect of temperature, pressure and power in obtaining TiO2 and TiO2-Fe via microwaves and evaluation of photocatalytic activity with synthesis time

2019 ◽  
Vol 29 ◽  
pp. 1-13
Author(s):  
Ulises Zurita Luna ◽  
Juan Zárate Medina ◽  
Anayeli Yazmin Gallegos Hernández ◽  
Rafael Romero Toledo ◽  
José Apolinar Cortés
Keyword(s):  
Photocatalytic Activity ◽  
Diffuse Reflectance Spectroscopy ◽  
Uv Light ◽  
Effect Of Temperature ◽  
Blue Dye ◽  
Iron Doping ◽  
X Ray Diffraction ◽  
Synthesis Time ◽  
Power Change ◽  
Acid Blue

Photocatalysts of titanium dioxide (TiO2) doped with different percentages of iron were synthesized via microwave at 180 °C, with two different times, 2 min and 10 min. Temperature, pressure, and power change were analyzed. Important changes were mainly observed in the pressure conditions. The synthesized photocatalysts were characterized using: Scanning electron microscopy (SEM), X-ray diffraction (XRD), specific surface area (BET), and UV-vis diffuse reflectance spectroscopy. The presence of nanoparticles was observed; furthermore, anatase crystalline phase of TiO2 was the only found. A study of the photocatalytic activity for discoloration acid blue dye 9 (AB9) with UV light was performed, and it was compared with the commercial photocatalyst Degussa P-25, being the best result a total discoloration of dye at 45 min of reaction using the TiO2 photocatalyst undoped synthesized at 2 min. The iron doping did not show an improvement in the photocatalytic activity, and it was also observed that the time of synthesis considerably influences in the photocatalytic activity, with best efficiencies at minor synthesis time.

Photocatalytic degradation of methylene blue from aqueous solutions using nanopillars-TiO2 thin films: Batch reactor studies

2018 ◽  
Vol 18 (3) ◽  
pp. 81-91 ◽  
Author(s):  
C. Lalhriatpuia
Keyword(s):  
Thin Films ◽  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Organic Carbon ◽  
Photocatalytic Degradation ◽  
Batch Reactor ◽  
Tio2 Thin Films ◽  
Initial Concentration ◽  
Bet Specific Surface Area ◽  
Interfering Ions

Nanopillars-TiO2 thin films was obtained on a borosilicate glass substrate with (S1) and without (S2) polyethylene glycol as template. The photocatalytic behaviour of S1 and S2 thin films was assessed inthe degradation of methylene blue (MB) dye from aqueous solution under batch reactor operations. The thin films were characterized by the SEM, XRD, FTIR and AFM analytical methods. BET specific surface area and pore sizes were also obtained. The XRD data confirmed that the TiO2 particles are in its anatase mineral phase. The SEM and AFM images indicated the catalyst is composed with nanosized pillars of TiO2, evenly distributed on the surface of the substrate. The BET specific surface area and pore sizes of S1 and S2 catalyst were found to be 5.217 and 1.420 m2/g and 7.77 and 4.16 nm respectively. The photocatalytic degradation of MB was well studied at wide range of physico-chemical parameters. The effect of solution pH (pH 4.0 to 10.0) and MB initial concentration (1.0 to 10.0 mg/L) was extensively studied and the effect of several interfering ions, i.e., cadmium nitrate, copper sulfate, zinc chloride, sodium chloride, sodium nitrate, sodium nitrite, glycine, oxalic acid and EDTA in the photocatalytic degradation of MB was demonstrated. The maximum percent removal of MB was observed at pH 8.0 beyond which it started decreasing and a low initial concentration of the pollutant highly favoured the photocatalytic degradation using thin films and the presence of several interfering ions diminished the photocatalytic activity of thin films to some extent. The overall photocatalytic activity was in the order: S2 > S1 > UV. The photocatalytic degradation of MB was followed the pseudo-first-order rate kinetics. The mineralization of MB was studied with total organic carbon measurement using the TOC (total organic carbon) analysis.

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