A High Photo-Catalytic Activity of Magnetic Composite Based on Chitosan and Manganese-Doped Zinc Oxide Nanoparticles for Removal of Dyeing Wastewater

作者：Ngoc Lam Giang Nguyen; Quoc Hue Pho; Van Cuong Nguyen^*

来源：Journal of Nanoscience and Nanotechnology, 2016, 16(8): 7959-7967.

DOI：10.1166/jnn.2016.12763

• Photo-Degradation
• Magnetic Nanocomposite
• Photo-Catalytic Activity
• Textile Dyeing Wastewater
• Manganese Doped Zinc Oxide Nanoparticles
• Chitosan

In this study, a novel high photo-catalytic activity of magnetic composite based on chitosan and manganese-doped zinc oxide nanoparticles (Mn-ZnO/Fe3O4/CS) was synthesized using a combination of sol-gel and co-precipitation methods. The results showed the role of manganese in improvement of photo-catalytic activity of Mn-doped ZnO/Fe3O4/CS compared with ZnO/Fe3O4/CS. Physical properties and characterization of prepared material were investigated by FT-IR, SEM, VSM, XRD and TGA. The photo-catalytic activity of composite was performed on the reactive blue 198 dye (RB198). Various parameters (pH, initial concentration, illumination time, dosage of material) effecting photo-catalytic activities were also examined. Moreover, the composite was applied for real dyeing wastewater with high efficiency. Excitingly, the COD results indicated that the photo-catalytic activity of Mn-doped ZnO/Fe3O4/CS composite improved with representation of manganese doped into structure of magnetic composite. Finally, the reusability of the material was still remained with high discoloration efficiency after 4 times of treatment with dyes.

• 出版日期2016-8