Photocatalytic degradation of Malachite Green using ZnO and ZnO-TiO2 nanoparticles from aqueous solution

Journal of Nanoanalysis

مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 04 مرداد 1397

نوع مقاله: Original Research Paper

شناسه دیجیتال (DOI): 10.22034/jna.2018.564328.1082

نویسندگان

hadi baseri^{* 1}؛ Elahe Alizadeh²

¹department of engineering, University of Damghan, Damghan, Iran

²Damghan University, Damghan, Iran

چکیده

Today, despite of the increasing demands for the products of chemical industries and the related factories, the challenges of environmental pollution has not been improved and it is approaching a very dangerous stage. In this regard, the role of dyeing industries in contaminating the environment is undeniable. In this research, ZnO and ZnO-TiO2 nanoparticles were synthesized by co-precipitation and sol-gel methods, respectively. The synthesized nanoparticles were characterized by XRD and FE-SEM techniques and their band gap energy were determined using the UV-Vis spectrum obtained from the suspension of nanoparticles. By using synthesized nanoparticles, degradation of malachite green under irradiation of the UV (A)-Visible mixture light from aqueous solution were evaluated and the effect of different parameters such as amount of photo catalyst, time of light irradiation and dose of H2O2 have been studied. The destruction amount was determined by UV-Vis spectroscopy method. Based on the reported results, the maximum degradation efficiency of about 99% was obtained in the optimal values of experimental conditions.

کلیدواژه‌ها

Photo Catalyst؛ nanoparticles؛ Zno-Tio2؛ ZnO؛ Malachite green