Development of metal-doped ZnO catalysts for photocatalytic degradation of caffeine
DOI:
https://doi.org/10.33448/rsd-v11i14.36395Keywords:
Photocatalysis; ZnO; Degradation; Caffeine.Abstract
Currently, conventional wastewater treatment processes are unable to remove certain pollutants, such as contaminants of emerging concern, considered an environmental problem. In this way, there is a growing search for new alternatives to effluent treatments, in order to remove these pollutants, including caffeine, which is present in different foods, being found in water for human consumption. Heterogeneous photocatalysis, an advanced oxidation process, is an efficient alternative for the removal of these substances. In this context, the present work aimed to develop metal-doped ZnO catalysts and study their performance in the photocatalytic degradation reaction of caffeine. The addition of metals to the catalyst improves its properties, especially its absorption capacity in the visible region. First, the commercial ZnO catalyst was tested in the photocatalytic removal of caffeine under UV radiation, being determined, through an experimental design, the best experimental conditions, in which 96.88% of caffeine degradation was reached. Subsequently, commercial ZnO was doped with silver (Ag), nickel (Ni) and copper (Cu), and these synthesized catalysts were characterized by means of specific surface area analysis, scanning electron microscopy, infrared spectroscopy and fluorescence of X ray. Finally, the performance of the synthesized catalysts was evaluated in the photocatalytic degradation reaction of caffeine, under the best experimental conditions under visible radiation. The catalyst with the addition of 8% of Ag by weight, was the one that obtained the best performance in the photocatalytic removal of caffeine, reaching a degradation of 87.47%.
References
Almeida, L. N. B., Lenzi, G. G., Pietrobelli, J. M. T. A., et al. (2019). Óxido de Zinco (ZnO) e a degradação fotocatalítica cafeína. Ciência, tecnologia e inovação [recurso eletrônico] / Organizadores Franciele Bonatto, Jair de Oliveira, João Dallamuta. – Ponta Grossa (PR): Atena Editora, 26p.
Almeida, L. N. B., Lenzi, G. G., Pietrobelli, J. M. T. A., et al. (2020)., Degradation of Caffeine by Heterogeneous Photocatalysus Using ZnO with Fe and Ag. Brazilian Archives of Biology and Technology, 63, p. e20180614.
Canela, M. C. (2014). Cafeína em águas de abastecimento público no Brasil / Instituto Nacional de Ciências e Tecnologias Analíticas Avançadas. São Carlos: Editora Cubo, 96p.
Dalponte, I., Mathias, A. L., Jorge, R. M. M., et al. (2016). Degradação fotocatalítica de tartrazina com TiO2 imobilizado em esferas de alginato. Química. Nova, 39(10), p. 1165-1169.
Elhalil, A., Elmoubarki, R., Machrouhi, A., et al. (2017). Photocatalytic degradation of caffeine by ZnO-ZnAl2O4 nanoparticles derived from LDH structure. Journal of Environmental Chemical Engineering, 5(4), p. 3719-3726.
Estrela, C. (2018). Metodologia científica: Ciência, Ensino e Pesquisa. (3ª Edição), Editora: Artes Médicas, Universidade Federal de Goiás (FO/UFG) – Goiás, 738p.
Gayatri, R., Agustina, T. E., Moeksin, R., et al. (2021). Preparation and Characterization of ZnO-Zeolite Nanocomposite for Photocatalytic Degradation by Ultraviolet Light. Journal of Ecological Engineering, 22(2), p. 178–186.
Giraldi, T. R., Swerts, J. P., Vicente, M. A., et al. (2016). Utilização de partículas de ZnO: Mn para a degradação do azul de metileno por processo de fotocatálise. Cerâmica, 62(364), p. 345-350.
Guo, L., Wang, Y., Shang Y., et al. (2022). Preparation of Pd/PdO@ZnO-ZnO nanorods by using metal organic framework templated catalysts for selective detection of triethylamine. Sensors and Actuators B: Chemical, 350(1), p. 130840.
Machado, K. C., Grassi, M. T., Vidal, C., et al. (2016). A preliminar nationwide survey of the presence of emerging contaminants in drinking and source waters in Brazil. Science of the Total Environment 572, p. 138-146.
Machado, T. C., Pizzolato, T. M., Arenzon, A. S., et al. (2015). Photocatalytic degradation of rosuvastatin: Analytical studies and toxicity evaluations. Science of the Total Environment, 502, p. 571–577.
Mai, L. T., Hoai, L. T., & Tuan, V. A. (2018). Effects of reaction parameters on photodegradation of caffeine over hierarchical flower-like ZnO nanostructure. Vietnam Journal of Chemistry, 56(5), p. 647-653.
Nogueira, R. F. P., & Jardim, W. F. (1998). A fotocatálise heterogênea e sua aplicação ambiental. Química Nova, 21(1), p. 69-72.
Prado, T. M., Silva F. L., Carrico A., et al. (2022). Photoelectrocatalytic degradation of caffeine using bismuth vanadate modified with reduced graphene oxide. Materials Research Bulletin, 145, p. 111539.
Pereira, A. S., Shitsuka, D. M., Parreira, F. J., & Shitsuka, R. (2018). Metodologia da pesquisa científica. (1ª Edição) UAB/NTE/UFSM, Universidade Federal de Santa Maria – RS, 119p.
Raj, R., Tripathi, A., Das, S., & Ghangrekar, M. M. (2021). Removal of caffeine from wastewater using electrochemical advanced oxidation process: A mini review. Case Studies in Chemical and Environmental Engineering, 4, p. 100129.
Severino, A. J. (2013). Metodologia do trabalho científico. (3ª Edição), Cortez Editora, São Paulo – SP, 274p.
Silva, S. S., Magalhães, F., & Sansiviero, M. T. C. (2010). Nanocompósitos semicondutores ZnO/TiO2, Testes Fotocatalíticos. Química. Nova, 33(1), p. 85-89.
Silva, W. L., Lansarin, M. A., & Moro, C. C. (2013). Síntese, caracterização e atividade fotocatalítica de catalisadores nanoestruturados de TiO2 dopados com metais. Química. Nova, 36(3), p. 382-386.
Vaiano, V., Jaramillo-Paez, C. A., Matarangolo, M., et al. (2019). UV and visible-light driven photocatalytic removal of caffeine using ZnO modified with different noble metals (Pt, Ag and Au). Material Research Bulletin, 112, p. 251-260.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2022 Bianca Simone Schneider; Caroline Moreira; Sandra Raquel Kunst; Fernando Dal Pont Morisso; Cláudia Trindade Oliveira; Tiele Caprioli Machado
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
1) Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2) Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
3) Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.
