Photodegradation of Methylene Blue and Rhodamine B Using Laser-Synthesized ZnO Nanoparticles

Materials

Andrea Jurov¹  Janez Zavašnik¹  Andrea Jagodar²  Eva Kovačević²  Julio Car³  Nikola Klobučar³  Damjan Blažeka³  Nikša Krstulović³ 

[1] Department of Gaseous Electronics, Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia;GREMI, UMR7344 CNRS/Université d’Orléans, F-45067 Orléans, France;Institute of Physics, Bijenička cesta 46, 10000 Zagreb, Croatia;

关键词: photocatalysis;    pulsed laser ablation in water;    ZnO nanoparticles;    Methylene Blue;    Rhodamine B;   

DOI  :  10.3390/ma13194357

来源: DOAJ

【 摘 要 】

In this paper we examined the photocatalytic efficiency of a laser-synthesized colloidal solution of ZnO nanoparticles synthesized by laser ablation in water. The average size of the obtained colloidal ZnO nanoparticles is about 47 nm. As revealed by electron microscopy, other nanostructures were also present in the colloidal solution, especially nanosheets. A photocatalytic degradation of UV-irradiated Methylene Blue and Rhodamine B solutions of different concentration in the presence of different ZnO catalyst mass concentrations was studied in order to examine their influence on photodegradation rates. ZnO nanoparticles have shown high photocatalytic efficiency, which is limited due to different effects related to UV light transmittivity through the colloidal solution. Therefore, increasing catalyst concentration is effective way to increase photocatalytic efficiency up to some value where photodegradation rate saturation occurs. The photodegradation rate increases as the dye concentration decreases. These findings are important for water purification applications of laser-synthesized ZnO nanoparticles.

【 授权许可】

Unknown