Photo-Fenton degradation of malachite green catalyzed by aromatic compounds under visible light irradiation

2002 ◽  
Vol 26 (3) ◽  
pp. 336-341 ◽  
Author(s):  
Feng Chen ◽  
Jianjun He ◽  
Jincai Zhao ◽  
Jimmy C. Yu
Keyword(s):  
Visible Light ◽  
Malachite Green ◽  
Visible Light Irradiation ◽  
Aromatic Compounds ◽  
Light Irradiation

Remarkable photo-catalytic degradation of malachite green by nickel doped bismuth selenide under visible light irradiation

2017 ◽  
Vol 392 ◽  
pp. 540-548 ◽  
Author(s):  
Chiranjit Kulsi ◽  
Amrita Ghosh ◽  
Anup Mondal ◽  
Kajari Kargupta ◽  
Saibal Ganguly ◽  
...  
Keyword(s):  
Visible Light ◽  
Malachite Green ◽  
Visible Light Irradiation ◽  
Catalytic Degradation ◽  
Light Irradiation ◽  
Bismuth Selenide

Photocatalytic Decolorization of Malachite Green in the Presence of Fe3O4/TiO2/CuO Nanocomposites

2015 ◽  
Vol 1123 ◽  
pp. 264-269 ◽  
Author(s):  
Sarah A. Arifin ◽  
Shofianina Jalaludin ◽  
Rosari Saleh
Keyword(s):  
Visible Light ◽  
Malachite Green ◽  
Visible Light Irradiation ◽  
Sol Gel ◽  
Butyl Alcohol ◽  
Aqueous System ◽  
Light Irradiation ◽  
Oh Radicals ◽  
X Ray Diffraction ◽  
Photocatalytic Decolorization

Fe3O4/TiO2/CuO nanocomposites have been synthesized by sol-gel method and further used as photocatalyst for decolorization of malachite green from aqueous system under UV and visible light irradiation. X-ray diffraction confirmed the phase purity and crystallinity of nanocomposites. From UV-visible spectroscopy measurements it is found that the absorption peak of TiO2nanoparticles is shifted towards longer wavelength after formation of nanocomposites indicating a modification of bandgap. The photocatalytic activity of TiO2nanoparticles was enhanced by hybridization under visible light irradiation. The photodegradation of malachite green was significantly reduced by the addition oftert-butyl alcohol indicated that •OH radicals played an important role in the photocatalytic mechanism.

scholarly journals Photocatalytic activity of NiFe2O4 and Zn0.5Ni0.5Fe2O4 modified by Eu(III) and Tb(III) for decomposition of Malachite Green

2019 ◽  
Vol 17 (1) ◽  
pp. 1124-1132
Author(s):  
M. P. Tsvetkov ◽  
I. R. Ivanova ◽  
E. P. Valcheva ◽  
J. Ts. Zaharieva ◽  
M. M. Milanova
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Malachite Green ◽  
Visible Light Irradiation ◽  
Lanthanide Ions ◽  
Light Irradiation ◽  
Gelling Agent ◽  
Halogen Lamp ◽  
Equal Distribution ◽  
Positive Effects

AbstractThe mixed metal oxides NiFe2O4 and Zn0.5Ni0.5Fe2O4 with a spinel-like structure, pure and modified with the lanthanide ions Eu(III) and Tb(III), were prepared by a sol-gel process in which propylene oxide was used as a gelling agent and then tested as photocatalysts. The photocatalytic activity was studied under polychromic visible light irradiation (halogen lamp) for the decomposition of the water pollutant Malachite Green in model solutions which were prepared under laboratory conditions. The modified samples showed a better activity under visible light irradiation than the pure samples. The highest activity under visible light irradiation was observed for Zn0.5Ni0.5Fe2O4 that was modified with 5 wt. % Eu(III) or Tb(III), and which showed the positive effects of the doping ions. Based on the cartographic data for the smooth and equal distribution of Tb(III) on the surface of Zn0.5Ni0.5Fe2O4 particles, the surface processes may have influenced the photocatalytic activity. The energy band gap of the samples was calculated, showing somewhat lower values for the doped samples than the pure ferrites.

Photocatalyst Co3O4/red phosphorus for efficient degradation of malachite green under visible light irradiation

2020 ◽  
Vol 240 ◽  
pp. 122185 ◽  
Author(s):  
Jianli Tao ◽  
Meng Zhang ◽  
Xiang Gao ◽  
Hao Zhao ◽  
Zhenpeng Ren ◽  
...  
Keyword(s):  
Visible Light ◽  
Malachite Green ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Red Phosphorus
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