Mesoporous and nanoflowers (ZnO2) via a hydrothermal technique for dye removal and antibacterial applications

• Published in: Inorganic chemistry communications Vol. 151; p. 110575
• Main Author: Al Naim, Abdullah F.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.05.2023
• Subjects: Antibacterial; Dye removal; Nanoflowers; Structural; Zinc peroxide; Nanoflowers; Dye removal; Antibacterial; Zinc peroxide; Structural
• ISSN: 1387-7003; 1879-0259
• DOI: 10.1016/j.inoche.2023.110575

[Display omitted] •New zinc peroxide (ZnO2) nanoflowers with a petal width of 67.3 nm have been created via a new facile hydrothermal reaction at 200 °C for 5 h for efficient dye adsorption and antibacterial applications.•Prepared ZnO2 nanoflowers are able to remove 50 ml of (50 mg/L) of methylene blue dye with a high adsorption capacity (239 mg/g).•The Langmuir model and the pseudo-second-order kinetics have characterized the adsorption isotherms and the adsorption kinetics of the methylene blue dye. Also,•The catalytic efficiency was still remains without any loss for along five runs showing a high stability of ZnO2 nanoflowers.•The antibacterial test of the ZnO2 nanoflowers has been studied in details for different categories of bacteria (Gram- negative type and Gram- positive type).•The obtained results show that the ZnO2 nanoflowers are promising materials for the elimination of the dye from wastewater and biological control. In this work, new zinc peroxide (ZnO2) nanoflowers with a petal width of 67.3 nm were created via a new facile hydrothermal reaction at 200 °C for 5 h for efficient dye adsorption and antibacterial applications. In addition, the as-synthesized ZnO2 nanoflowers were described by different techniques, such as BET, FE-SEM and XRD. Moreover, 10 mg of ZnO2 nanoflowers were able to remove 50 ml of (50 mg/L) of methylene blue dye, achieving a high adsorption capacity (239 mg/g). The Langmuir model and pseudo-second-order kinetics characterized the adsorption isotherms and the adsorption kinetics of the methylene blue dye, respectively. The catalytic efficiency still remained without any loss for five runs, showing the high stability of the ZnO2 nanoflowers. Furthermore, the antibacterial test of the ZnO2 nanoflowers were studied in detail for different categories of bacteria (i.e., Gram-negative and Gram-positive). The bacteriostatic activity of the ZnO2 nanoflowers were detected against Escherichia coli (E. coli) and Bacillus subtilis (Bacillus sp.) bacteria. The bacterial growth decreased with an increasing amount of ZnO2 nanoflowers. Finally, the obtained results showed that the ZnO2 nanoflowers are promising materials for the elimination of the dye from wastewater and biological control.