Green synthesis of zinc oxide nanoparticles: A review of the synthesis methodology and mechanism of formation

Bandeira, Marina; Giovanela, Marcelo; Roesch‐Ely, Mariana; Devine, Declan M.; Crespo, Janaína da Silva

doi:10.1016/j.scp.2020.100223

Cited by 305 publications

(170 citation statements)

References 114 publications

Supporting

Mentioning

164

Contrasting

Unclassified

Order By: Relevance

“…Due to the nanotechnological boom, unusual physical, chemical, and biological methods have been developed for the synthesis and production of metal NPs [ 30 , 31 , 32 , 33 , 34 , 35 ]. Therefore, the novelty of this paper lies in describing the relevant reported green synthesis of AuNPs and AgNPs from plant extracts and their capacity as antimicrobial agents within the agricultural field for fighting against bacterial and fungal pathogens that can cause plant, waterborne, and foodborne diseases.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Gold and Silver Nanoparticles from Plant Extracts and Their Possible Applications as Antimicrobial Agents in the Agricultural Area

Henríquez¹,

et al. 2020

View full text Add to dashboard Cite

Currently, metal nanoparticles have varied uses for different medical, pharmaceutical, and agricultural applications. Nanobiotechnology, combined with green chemistry, has great potential for the development of novel and necessary products that benefit human health, environment, and industries. Green chemistry has an important role due to its contribution to unconventional synthesis methods of gold and silver nanoparticles from plant extracts, which have exhibited antimicrobial potential, among other outstanding properties. Biodiversity-rich countries need to collect and convert knowledge from biological resources into processes, compounds, methods, and tools, which need to be achieved along with sustainable use and exploitation of biological diversity. Therefore, this paper describes the relevant reported green synthesis of gold and silver nanoparticles from plant extracts and their capacity as antimicrobial agents within the agricultural field for fighting against bacterial and fungal pathogens that can cause plant, waterborne, and foodborne diseases. Moreover, this work makes a brief review of nanoparticles’ contribution to water treatment and the development of “environmentally-friendly” nanofertilizers, nanopesticides, and nanoherbicides, as well as presenting the harmful effects of nanoparticles accumulation in plants and soils.

show abstract

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Gold and Silver Nanoparticles from Plant Extracts and Their Possible Applications as Antimicrobial Agents in the Agricultural Area

Henríquez¹,

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Typically ZnO NPs are synthesized by sol-gel or hydrothermal processes including green synthesis using plant extracts for the reduction of the zinc salt [17]. Green synthesis of ZnO nanoparticles (ZnO NPs) is preferred for food and biomedical applications, as physical and chemical synthesis involve toxic chemicals and extreme reaction conditions [18,19]. Plant extracts are mainly used for green synthesis of ZnO NPs, which act as a reducing as well as a stabilizing agent [19,20].…”

Section: Introductionmentioning

confidence: 99%

Biodegradable Hybrid Nanocomposite of Chitosan/Gelatin and Green Synthesized Zinc Oxide Nanoparticles for Food Packaging

Kumar

Mudai

Roy

et al. 2020

Foods

128

View full text Add to dashboard Cite

In the context of emerging global concerns with synthetic plastic packaging, alternative natural biodegradable packaging materials are gaining increasing attention for food packaging applications. In this study, chitosan and gelatin nanocomposite hybrid films containing green synthesized zinc oxide (ZnO) nanoparticles (NPs) were developed and microstructural properties were studied. Antimicrobial activity of the developed films was evaluated using both Gram negative (Escherichia coli) and Gram positive bacteria (Staphylococcus aureus). Green synthesis protocol was used for the precipitation of ZnO NPs using fruit extract of Cassia fistula. The as-synthesized polyhedral ZnO NPs were in the range of 20–40 nm (average size ≈29 nm). Reinforcement with ZnO NPs in the hybrid films lead to improved thermal stability, elongation-at-break (EAB), and compactness properties. The developed films with 2% and 4% ZnO NPs showed a smooth, compact, and heterogeneous surface morphology compared to the control (chitosan-gelatin hybrid) films. Disc diffusion assays showed that the nanocomposite film had significant antimicrobial activity against E. coli. The developed hybrid nanocomposite films have potential to be developed as biodegradable alternative for postharvest packaging of fresh fruits and vegetables.

show abstract

“…ZnO is non-toxic and its NPs possess a high surface-to-volume ratio. Owing to the unique electrical, chemical and optical properties of ZnO NPs, they are used in wide applications (e.g., solar cells, light-emitting diodes, metal-insulator-semiconductor diodes, photocatalytic degradation, drug delivery and personal care products such as cosmetics and sunscreens) [ 17 , 18 ], which make them the most feasible, economically viable and time-efficient approach as the chemicals are less hazardous to the environment.…”

Section: Introductionmentioning

confidence: 99%

Greener Synthesis of Zinc Oxide Nanoparticles: Characterization and Multifaceted Applications

et al. 2020

View full text Add to dashboard Cite

Nanoparticles (NPs) have unique properties compared to their bulk counterparts, and they have potentials for various applications in many fields of life science. Green-synthesized NPs have garnered considerable interest due to their inherent features such as rapidity, eco-friendliness and cost-effectiveness. Zinc oxide nanoparticles (ZnO NPs) were synthesized using an aqueous extract of Kalanchoe blossfeldiana as a reducing agent. The resulting nanoparticles were characterized via X-ray diffraction (XRD), dynamic light scattering (DLS), UV-Vis spectroscopy, photoluminescence (PL), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS). The antimicrobial potential of the synthesized ZnO NPs against bacterial and fungal strains was examined by the disk diffusion method, and they showed a promising antibacterial and antifungal potential. The catalytic activity of the synthesized ZnO NPs in reducing methylene blue (MB) and eosin was studied via UV-Vis spectroscopy. The decolorization percentages of the MB and Eosin Y dyes were 84% and 94%, respectively, which indicate an efficient degradation of the ZnO NPs. In addition, the cytotoxic activity of the ZnO NPs on the HeLa cell line was evaluated via in vitro assay. The MTT assay results demonstrate a potent cytotoxic effect of the ZnO NPs against the HeLa cancer cell line.

show abstract

Green synthesis of zinc oxide nanoparticles: A review of the synthesis methodology and mechanism of formation

Cited by 305 publications

References 114 publications

Green Synthesis of Gold and Silver Nanoparticles from Plant Extracts and Their Possible Applications as Antimicrobial Agents in the Agricultural Area

Green Synthesis of Gold and Silver Nanoparticles from Plant Extracts and Their Possible Applications as Antimicrobial Agents in the Agricultural Area

Biodegradable Hybrid Nanocomposite of Chitosan/Gelatin and Green Synthesized Zinc Oxide Nanoparticles for Food Packaging

Greener Synthesis of Zinc Oxide Nanoparticles: Characterization and Multifaceted Applications

Contact Info

Product

Resources

About