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10.3390/ma13194357
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Article

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

by
Damjan Blažeka
1,
Julio Car
1,
Nikola Klobučar
1,
Andrea Jurov
2,3,
Janez Zavašnik
2,
Andrea Jagodar
4,
Eva Kovačević
4 and
Nikša Krstulović
1,*
1
Institute of Physics, Bijenička cesta 46, 10000 Zagreb, Croatia
2
Department of Gaseous Electronics, Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
3
Jožef Stefan International Postgraduate School, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
4
GREMI, UMR7344 CNRS/Université d’Orléans, F-45067 Orléans, France
*
Author to whom correspondence should be addressed.
Materials 2020, 13(19), 4357; https://doi.org/10.3390/ma13194357
Submission received: 4 September 2020 / Revised: 25 September 2020 / Accepted: 28 September 2020 / Published: 30 September 2020
(This article belongs to the Special Issue Laser Ablation: Materials and Applications)
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Abstract

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.
Keywords: photocatalysis; pulsed laser ablation in water; ZnO nanoparticles; Methylene Blue; Rhodamine B photocatalysis; pulsed laser ablation in water; ZnO nanoparticles; Methylene Blue; Rhodamine B

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MDPI and ACS Style

Blažeka, D.; Car, J.; Klobučar, N.; Jurov, A.; Zavašnik, J.; Jagodar, A.; Kovačević, E.; Krstulović, N. Photodegradation of Methylene Blue and Rhodamine B Using Laser-Synthesized ZnO Nanoparticles. Materials 2020, 13, 4357. https://doi.org/10.3390/ma13194357

AMA Style

Blažeka D, Car J, Klobučar N, Jurov A, Zavašnik J, Jagodar A, Kovačević E, Krstulović N. Photodegradation of Methylene Blue and Rhodamine B Using Laser-Synthesized ZnO Nanoparticles. Materials. 2020; 13(19):4357. https://doi.org/10.3390/ma13194357

Chicago/Turabian Style

Blažeka, Damjan, Julio Car, Nikola Klobučar, Andrea Jurov, Janez Zavašnik, Andrea Jagodar, Eva Kovačević, and Nikša Krstulović. 2020. "Photodegradation of Methylene Blue and Rhodamine B Using Laser-Synthesized ZnO Nanoparticles" Materials 13, no. 19: 4357. https://doi.org/10.3390/ma13194357

APA Style

Blažeka, D., Car, J., Klobučar, N., Jurov, A., Zavašnik, J., Jagodar, A., Kovačević, E., & Krstulović, N. (2020). Photodegradation of Methylene Blue and Rhodamine B Using Laser-Synthesized ZnO Nanoparticles. Materials, 13(19), 4357. https://doi.org/10.3390/ma13194357

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