scholarly journals Sorption Preconcentration and Determination of Nickel in Wastes of Heat Power Industry by Diffuse Reflection Spectroscopy

2003 ◽  
Vol 24 (2) ◽  
pp. 173-177 ◽  
Keyword(s):  
Diffuse Reflection ◽  
Power Industry ◽  
Heat Power ◽  
Diffuse Reflection Spectroscopy ◽  
Reflection Spectroscopy ◽  
Sorption Preconcentration ◽  
Determination Of Nickel

Denitrification of water using ZnO/Cu as the photocatalyst

2018 ◽  
Vol 7 (3) ◽  
pp. 255-259 ◽  
Author(s):  
Ehasn Rahmani ◽  
Mohammad Rahmani
Keyword(s):  
Diffuse Reflection ◽  
Nano Particles ◽  
Diffuse Reflection Spectroscopy ◽  
Reflection Spectroscopy ◽  
X Ray Diffraction ◽  
Spectroscopy Analysis ◽  
Wet Impregnation ◽  
X Ray ◽  
Nanoparticle Morphology

Abstract The ZnO:xCu photocatalyst was prepared with reacting media, namely, water method followed by wet impregnation to deposit Cu on the ZnO nano particles. X-ray diffraction was used to perform crystallography and the determination of the ZnO:xCu particle size. Fourier transform infrared was employed for the detection of chemical bonds in the synthesized photocatalyst. The nanoparticle morphology was studied by field emission scanning electron microscope. The elemental composition of the synthesized catalysts was evaluated with X-ray fluorescence technique. Diffuse reflection spectroscopy analysis was performed to investigate the light absorption of the ZnO:xCu catalysts. The photocatalytic activity of the prepared ZnO:xCu nanoparticles was studied for the removal of nitrate from the aqueous solution of ammonium nitrate (50 mg·l−1) under UV irradiation. Results indicated that the ZnO:xCu photocatalyst has high photocalytic activity to remove nitrate from water. Moreover, complete degradation was achieved after 2.5 h.

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