Green synthesis and characterization of zinc oxide nanoparticles using Eucalyptus globulus Labill. leaf extract and zinc nitrate hexahydrate salt

• Published in: SN applied sciences Vol. 2; no. 5; p. 991
• Main Authors: Barzinjy, Azeez Abdullah, Azeez, Himdad Hamad
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.05.2020; Springer Nature B.V
• Subjects: Antimicrobial agents; Applications; Applied and Technical Physics; Atoms & subatomic particles; Biosynthesis; Calorimetry; Chelation; Chemical composition; Chemistry/Food Science; Crystallization; Cytotoxicity; Differential scanning calorimetry; Earth Sciences; Engineering; Environment; Eucalyptus; Eucalyptus globulus; Evaporation; Fourier transforms; Fundamental Properties; Infrared analysis; Infrared spectroscopy; Leaves; Materials Science; Materials Science: 2D Materials: Synthesis; Metabolites; Metal hydroxides; Metal oxides; Molecular weight; Morphology; Nanoparticles; Nitrogen; Optical properties; Organic materials; Plant extracts; Pollutants; Research Article; Spectroscopy; Stability analysis; Surface stability; Synthesis; Thermodynamic properties; Zeta potential; Zinc compounds; Zinc oxide; Zinc oxides; United Kingdom > UK; United States > US; Green synthesis method of NPs; ZnO NPs; Biosynthesis; Zinc nitrate hexahydrate
• ISSN: 2523-3963; 2523-3971
• DOI: 10.1007/s42452-020-2813-1

This study consists of a reliable process for synthesizing ZnO NPs by green method. Here, Eucalyptus globulus Labill. leaf extract is utilized as an efficient chelating and capping agent for synthesizing ZnO NPs from zinc nitrate hexahydrate salt. The plant ingredients, structure, morphology, thermal behavior, chemical composition and optical properties of ZnO nanoparticles were investigated using several characterization techniques, namely XRD, FE-SEM, EDX, BET, Zeta potential, DLS, differential scanning calorimetry (DSC) analysis, FT-IR analysis and UV–Vis spectroscopy. The UV–Vis and FTIR analysis of Eucalyptus globulus leaf extract verified that this extract is a promising candidate for biosynthesizing ZnO NPs. The XRD spectrum, DLS and the SEM images confirmed the crystallinity and the spherical-shape of the ZnO NPs with an average size between 27 and 35 nm. The band-gap of the ZnO were measured to be around 2.67 eV. Zeta potential and BET analysis showed that, the biosynthesized ZnO NPs possess good stability and the their specific surface area is 23.481 m 2 /g. DSC analysis exhibits two endothermic peaks related to the water evaporation absorbed by the NPs and modification of zinc complex to zinc hydroxide, with a single exothermic peak related to the crystallization of ZnO NPs and degradation of organic materials.