Photoreduction of Potassium Dichromate in Aqueous Solution using Cobalt doped ZnO Nanoparticles
(ندگان)پدیدآور
Fallah Shojaei, AbdollahFathi, Shivaنوع مدرک
Textزبان مدرک
Englishچکیده
Co-doped ZnO nanoparticles with different Cobalt contents were prepared by direct precipitation method. The materials were characterized by XRD, SEM and TEM techniques. The XRD results indicated that the particle size of pure ZnO and Co-doped ZnO is about 30-45nm. The toxic Cr(VI) in industrial wastewaters can be removed by a reduction from Cr(VI) to Cr(III). The reduction of Cr(VI) to Cr(III) can be achieved by a photocatalytic process. The effect of Co loading on the photocatalytic activity of Co-doped ZnO in the reduction of Cr(VΙ) was studied and the results are compared with the pure ZnO. The results showed that the rate of photoreduction of Cr(VΙ) over Co-doped ZnO is much higher as compared to that of pure ZnO. The photocatalytic reaction were carried out under UV radiation towards the reduction of Cr(VI) by varying different parameters such as irradiation time, pH of the solution, catalyst amount and substrate concentration.
کلید واژگان
Photocatalytic ReductionCo-doped ZnO
Nano Particles
Cr(VI) Elimination
Environmental Pollution
تخصصی
شماره نشریه
1تاریخ نشر
2016-04-011395-01-13
ناشر
University of Isfahanدانشگاه اصفهان
سازمان پدید آورنده
Department of Chemistry, Faculty of Science, University of Guilan, Rasht, IranDepartment of Chemistry, Faculty of Science, University of Guilan, Rasht, Iran