Author:
Nguyen N. T.,Nguyen V. A.
Abstract
In this study we synthesized nano-sized ZnO particles by ultrasonic-assisted sol-gel method. The materials were, then, sintered at different temperatures of 400 o C, 500 o C, 600 o C, and 700 o C. The structural, morphological, and optical properties of the obtained ZnO nanoparticles were characterized by XRD, UV VIS, FE-SEM, and TEM. The results showed that ZnO nanoparticles have a hexagonal wurtzite crystalline structure, spherical and hexagonal shapes, and an average size of 22-30 nm. ZnO nanoparticles were used as photocatalysts to decompose methylene blue under ultraviolet light. The results showed that the materials are able to decompose methylene blue under ultra-violet lights. The material sintered 600o C achieved the highest efficiency. From that, it can be concluded that ZnO nanoparticles have potential applications as photocatalysts for organic dyes removal in aqueous solutions.
Publisher
Virtual Company of Physics
Subject
Physical and Theoretical Chemistry,Condensed Matter Physics,General Materials Science,Biomedical Engineering,Atomic and Molecular Physics, and Optics,Structural Biology
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