Improved photocatalytic decomposition of carbaryl pesticide in wastewater using ZnO nanorods.

Autor: Thi HP; Laboratory of Environmental Sciences and Climate Change, Institute for Computational Science and Artificial Intelligence, Van Lang University, Ho Chi Minh City, Vietnam.; Faculty of Environment, School of Technology, Van Lang University, Ho Chi Minh City, Vietnam., Chu TTH; Department of Chemistry, Faculty of Building Materials, Ha Noi University of Civil Engineering (HUCE), Giai Phong, Hanoi, Vietnam., Nguyen MV; VNU Key Laboratory of Advanced Material for Green Growth, Faculty of Chemistry, VNU University of Science, Thanh Xuan, Hanoi, Vietnam.
Jazyk: angličtina
Zdroj: Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes [J Environ Sci Health B] 2024 Nov 11, pp. 1-9. Date of Electronic Publication: 2024 Nov 11.
DOI: 10.1080/03601234.2024.2424088
Abstrakt: This study explores the enhanced photocatalytic performance of ZnO nanorods (ZnO-R) for degrading the carbaryl pesticide (CB) in wastewater. For comparison, commercial ZnO (ZnO-C) was used to evaluate the differences in the photocatalytic decomposition of CB between ZnO-R and ZnO-C. The results regarding the material properties demonstrated that ZnO-R enhances CB removal performance due to its unique rod shape, which extends light absorption and improves electron-hole separation. The removal rates of the carbaryl pesticide from the aqueous solution using ZnO-R and ZnO-C were 98.2% and 87.3%, respectively. Besides, the presence of other pesticides had a more negative impact on the performance of CB than inorganic contaminants. The degradation rates of CB using ZnO-R in wastewater were 99.8%, 68.2%, and 21.7% under UV, solar, and visible light, respectively. In addition, the degradation mechanism of CB using ZnO-R under UV light was proposed based on the n-type photocatalysis process. This work provides a method for selecting a suitable type of ZnO photocatalyst to control pesticide residue pollutants that are commonly found in agricultural activities.
Databáze: MEDLINE