پديدآورندگان :
Rastegar S. Chemical Engineering Faculty, Sahand University of Technology, Tabriz, Iran , Allahyari S. Allahyari@sut.ac.ir Chemical Engineering Faculty, Sahand University of Technology, Tabriz, Iran , Kahforooshan D. Chemical Engineering Faculty, Sahand University of Technology, Tabriz, Iran , Rahemi N. Chemical Engineering Faculty, Sahand University of Technology, Tabriz, Iran
كليدواژه :
Photocatalyst , Wastewater , Natural zeolite , Clinoptilolite , Bentonite.
چكيده فارسي :
In this study, silicotungstic acid (HSiW) was impregnated on natural zeolites of clinoptilolite (HSiW/Clin) and bentonite (HSiW/Bent). SEM analysis indicated while both samples had homogeneous distribution and nano scale particles, but particles of HSiW/Clin were smaller with no agglomeration. Optical studies with DRS showed that HSiW/Clin had more light absorption both in visible and UV regions and its band gap was lower. While HSiW/Clin as a photocatalyst degraded 92% of methylene blue, HSiW/Bent barely could degrade 40%. Study on effect of HSiW/Clin loading indicated that there was an optimum amount of 0.2 g in which the highest MB degradation took place.
