Photocatalytic degradation of methylene blue using ZnO and 2%Fe-ZnO semiconductor nanomaterials synthesized by sol-gel method: A comparative study

Journal of Water and Environmental Nanotechnology

ARTICLE

Isai, Kalpesh¹  Shrivastava, Vinod² 

[1] Department of Applied Sciences and Humanities, R.C.Patel Institute of Technology;Nanochemistry Research Laboratory, G. T. Patil College

关键词: 2%Fe-ZnO;    Methylene Blue;    Photocatalytic Degradation;    Semiconductor Nanomaterial;    Sol-gel;    ZnO;   

DOI  :  10.22090/jwent.2019.03.008

学科分类：数学（综合）

来源: Iranian Environmental Mutagen Society

【 摘 要 】

ZnO and 2%Fe-ZnO nanomaterials were prepared by using a low-cost sol-gel method. The synthesized nanomaterials were characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDX). The XRD and SEM studies reveal that the synthesized nanomaterials have a hexagonal wurtzite structure with average crystalline size ~ 22-23 nm. EDX analysis confirmed the composition and purity of synthesized nanomaterial. The photocatalytic activity of synthesized nanomaterials was monitored using the spectrophotometric method. Also, the photocatalytic removal of methylene blue (MB) dye from its aqueous solution by using ZnO and 2%FeZnO nanopowder under UV light irradiation was studied. The effect of various parameters such as pH of dye solution, dye concentration, contact time and catalyst dose were investigated. Results of the current study demonstrated that, the maximum degradation using ZnO was 86 % and that for 2%Fe-ZnO was 92 % (under the optimum condition initial dye concentration=10 mg/L and pH =2). This study showed that 2%Fe-ZnO is a promising and better photocatalyst than ZnO.

【 授权许可】

CC BY