Photo-electrochemical and photocatalytic properties of hierarchical flower-like BiOI/CoFe2O4 nanocomposites synthesized by co-precipitation method

2020 ◽  
pp. 110643
Author(s):  
Shangpan Huang ◽  
Zhiqiang Wei ◽  
Meijie Ding ◽  
Chao Li ◽  
Qiang Lu
Keyword(s):  
Photocatalytic Properties ◽  
Precipitation Method ◽  
Co Precipitation

Decolorization of Methylene Blue by Photocatalyst in the Ag3PO4-AgI System

2014 ◽  
Vol 970 ◽  
pp. 29-32 ◽  
Author(s):  
Pongsaton Amornpitoksuk ◽  
Sumetha Suwanboon
Keyword(s):  
Methylene Blue ◽  
Mixed Phase ◽  
Photocatalytic Properties ◽  
Precipitation Method ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
X Ray Diffraction ◽  
X Ray ◽  
Diffraction Patterns ◽  
Co Precipitation

The co-effect of PO43- and I- on the formation of a heterosturucture photocatalyst in the Ag3PO4-AgI system was studied by the co-precipitation method between AgNO3 and the precipitating agent. The precipitating agent was prepared by varying the mole ratios between Na2HPO4 and KI. At 10 mol.% KI, the product showed the mixed phase between Ag3PO4 and un-identified phase. For 30 - 90 mol.% KI, the un-identified phase and AgI were detected in the x-ray diffraction patterns. The un-identified phase strongly adsorbed the methylene blue dye. The product prepared from 30 mol.% KI had the highest content of un-identified phase and also showed the highest degree of decolorization in the dark. The photocatalytic properties of products in this system were confirmed by the decolorization of methylene blue under visible illumination.

scholarly journals Effect of Ni doping on structural, optical and photocatalytic properties of Zn1-XNiXO nanoparticles prepared by different pH conditions

2013 ◽  
Vol 12 (6) ◽  
pp. 4097-4107 ◽  
Author(s):  
R. Jeyachitr ◽  
N. Sriharan ◽  
V. Senthilnathan ◽  
T. S. Senthil
Keyword(s):  
Average Crystallite Size ◽  
Hexagonal Wurtzite Structure ◽  
Photocatalytic Properties ◽  
Precipitation Method ◽  
Ni Doping ◽  
Zno Nanocrystals ◽  
Structure Morphology ◽  
Ph Conditions ◽  
Doped Zno ◽  
Co Precipitation

Zn1-XNiXO (x = 0.00, 0.02, 0.04 & 0.06 mol %) nanoparticles were prepared by simple co-precipitation method. The influences of Ni doping on structure, morphology, optical and photocatalytic properties were investigated by means of Xray diffraction, scanning electron microscopy, UV–Vis spectrophotometer and photochemical reaction method. The obtained result shows that the prepared ZnO nanocrystals were hexagonal wurtzite structure and the average crystallite size decreases with increase of Ni doping. The increase of visible light absorption and increase of band gap were found with the increase of Ni doping concentration, which enable the sample harvest more photons to excite the electron from valence band. The photocatalytic properties of Ni doped ZnO nanocrystals shows enhanced activity that the pure ZnO nanocrystals. The photocatalytic activities were not significantly affected by the particle size and 0.04% Ni doped ZnO nanocrystals shows best catalytic activity than the other catalysts.

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