Visible light photo-degradation of methylene blue over Fe or Cu promoted ZnO nanoparticles.CuxZn(1-x)O, FexZn(1-x)O (x=0.01) and ZnO nanoparticles were and were characterized by X-ray diffraction, ultraviolet and visible spectroscopy, FTIR spectroscopy and SEM. 
X-ray diffraction
Visible light photo-degradation of methylene blue over Fe or Cu promoted ZnO nanoparticles.CuxZn(1-x)O, FexZn(1-x)O (x=0.01) and ZnO nanoparticles were and were characterized by X-ray diffraction, ultraviolet and visible spectroscopy, FTIR spectroscopy and SEM. 
ultraviolet and visible spectroscopy
Visible light photo-degradation of methylene blue over Fe or Cu promoted ZnO nanoparticles.CuxZn(1-x)O, FexZn(1-x)O (x=0.01) and ZnO nanoparticles were and were characterized by X-ray diffraction, ultraviolet and visible spectroscopy, FTIR spectroscopy and SEM. 
FTIR spectroscopy
Visible light photo-degradation of methylene blue over Fe or Cu promoted ZnO nanoparticles.CuxZn(1-x)O, FexZn(1-x)O (x=0.01) and ZnO nanoparticles were and were characterized by X-ray diffraction, ultraviolet and visible spectroscopy, FTIR spectroscopy and SEM. 
SEM
The photodegradation of an aqueous solution of methylene blue (as an organic pollutant) by nanoparticles with H2O2 (30%) under visible light and the progress of the reaction were monitored by UV-Vis spectroscopy absorption. 
UV-Vis spectroscopy