Appraisal of the biological aspect of Zinc oxide nanoparticles prepared using extract of <i>Camellia sinensis L.</i>

Akbarian, Maedeh; Mahjoub, S.; Elahi, Seyed Mohammad; Zabihi, Ebrahim; Tashakkorian, Hamed

doi:10.1088/2053-1591/ab2c49

Cited by 16 publications

(4 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some studies indicated high specific toxicity of ZnO NPs against bacteria, and only minimal effects were observed on human cells [3]. Green synthesis of ZnO NPs using aqueous leaves extract Camellia sinensis recorded the formation of hexagonal wurtzite bionanomaterials of 16 nm-sized ZnO NPs exhibited excellent antimicrobial activity against bacteria and fungi compared to the synthetic antibiotic [106]. Fatty acid in the Anchusa italica flower extract yielded ~8-14 nm in size.…”

Section: Zinc Oxide Nps (Zno Nps)mentioning

confidence: 99%

Recent Advances in Green Synthesis, Characterization, and Applications of Bioactive Metallic Nanoparticles

Begum

Pratibha²,

Rawat

et al. 2022

Pharmaceuticals

View full text Add to dashboard Cite

Nanoparticles (NPs) are elements derived from a cluster of atoms with one or more dimensions in the nanometer scale in the range of 1–100 nm. The bio nanofabrication of metallic NPs is now an important dynamic area of research, with major significance in applied research. Biogenic synthesis of NPs is more desirable than physical and chemical synthesis due to its eco-friendliness, non-toxicity, lower energy consumption, and multifunctional nature. Plants outperform microorganisms as reducing agents as they contain large secondary biomolecules that accelerate the reduction and stability of the NPs. The produced NPs can then be studied spectroscopically (UV-Visible, XRD, Raman, IR, etc.) and microscopically (SEM, TEM, AFM, etc.). The biological reduction of a metallic ion or its oxide to a nanoparticle is quick, simple, and may be scaled up at room temperature and pressure. The rise in multi-drug resistant (MDR) microbes due to the immoderate use of antibiotics in non-infected patients is a major cause of morbidity and mortality in humans. The contemporary development of a new class of antibiotics with different mechanisms of action to kill microbes is crucial. Metals and their oxides are extremely toxic to microbes at unprecedentedly low concentrations. In addition, prevailing infections in plants and animals are raising significant concerns across the globe. NPs’ wide range of bioactivity makes them ideal antimicrobial agents in agricultural and medical fields. The present review outlines the synthesis of metallic NPs from botanicals, which enables the metals to be in a stabilized form even after ionization. It also presents a valuable database on the biofunctionalization of synthesized NPs for further drug development.

show abstract

Section: Zinc Oxide Nps (Zno Nps)mentioning

confidence: 99%

Recent Advances in Green Synthesis, Characterization, and Applications of Bioactive Metallic Nanoparticles

Begum

Pratibha²,

Rawat

et al. 2022

Pharmaceuticals

View full text Add to dashboard Cite

show abstract

“…As displayed in Table 1, six factors influence the morphology of ZnO NPs. [31][32][33][34][35][36][37][38][39][40][41][42] However, due to differing levels of active reducing compounds in different plant species, 30 the reducing capability is also affected, which fundamentally affects the synthesis of ZnO NPs. Therefore, the effects of plant extract concentration, precursor concentration, reaction time, and calcination temperature are related to the species of plant.…”

Section: Preparation Conditionsmentioning

confidence: 99%

A review of the green synthesis of ZnO nanoparticles using plant extracts and their prospects for application in antibacterial textiles

Huang

Zhu

et al. 2021

Journal of Engineered Fibers and Fabrics

View full text Add to dashboard Cite

In an era of environmentally friendly development, methods of the green synthesis of zinc oxide nanoparticles (ZnO NPs) from plant extracts have become a focus of research attention because of the benefits of environmental sustainability, simplicity, and low price. The present review introduces a green mechanism for the synthesis of ZnO NPs using the extracts of plants, exploring factors that influence the morphology of ZnO NPs and their antibacterial properties, and the mechanisms of antibacterial action. The results indicate that the factors that influence morphology include the intrinsic crystallographic morphological properties and conditions of the preparation of ZnO NPs. In terms of preparation conditions, the influence of plant extract concentration, precursor concentration, reaction time, and calcination temperature on NP morphology is related to the species of plants used, with precursor concentration the most significant factor affecting the morphology of ZnO NPs. A pH of 12 appears be the most appropriate alkalinity for the synthesis of ZnO NPs from plant extracts. In addition, the synthesized ZnO NPs display excellent antibacterial properties, the mechanism of which involves photocatalysis, reactive oxygen species, and interactions between ZnO NPs and bacterial surfaces. Factors influencing the antibacterial properties are the type of bacteria and the concentration and morphology of ZnO NPs. Finally, the methods of preparation of antibacterial textiles using synthetic ZnO NPs are discussed in relation to the preparation of antibacterial fibers, fabric, and composite textiles. Here, the future trend of such antibacterial textiles is considered, providing the direction for further research of antibacterial textiles.

show abstract

“…The FTIR spectra of ZnO nanoparticles are shown in Figure .1 and peaks at 566.46 and 784.81 cm -1 are due to Zn-O bond stretching vibrations. The crystalline nature of the ZnO photocatalyst is reflected in the broadness of a peak, and the absorption band at 2333.83 cm -1 is created by the asymmetric and symmetric stretching mode vibrations of an air-absorbed CO 2 molecule [9]. Also, the wide peak at 3419.97 cm -1 and 1378.07 cm -1 , 1553.14 cm -1 may be due to stretching and bending vibrations of-OH group absorbed from the environment on the surface of the catalyst during FTIR measurement [10].…”

Section: Vibrational Spectroscopymentioning

confidence: 99%

Surface parametric influences on the photocatalytic behaviour of zinc oxide nanoparticles

Jagadeeswari,

Rathika,

Satheesh Kumar

et al. 2024

JOR

View full text Add to dashboard Cite

Zinc oxide nanoparticles were chemically synthesised and characterised by UV-DRS spectroscopy, FTIR, scanning electron microscopy with energy-dispersive X-ray diffraction, and X-ray powder diffraction. In order to evaluate the impact of the synthesis process on the structural parameters, Rietveld refinement was done using the GSAS-II programme on experimentally acquired XRD data. ZnO was found to have a hexagonal structure with lattice parameters of a = b =3.247 Å; c = 5.205Å and an average size of about 20-40 nm, as determined by Rietveld refinement of XRD and SEM data. FTIR and EDX analysis was used to confirm the functional group and elemental composition of ZnO NPs. The UV-DRS spectra revealed that the synthesised ZnO had an optical band gap of 3.05 eV. Parametric investigations of the surface morphology of ZnO nanostructures were conducted using the Gwyddion programme. Pseudo-first-order rate kinetics were observed for the photodegradation of two cationic dyes, MB (87.87%) and RhB (74.79%), in the presence of UV light.

show abstract

Appraisal of the biological aspect of Zinc oxide nanoparticles prepared using extract of Camellia sinensis L.

Cited by 16 publications

References 40 publications

Recent Advances in Green Synthesis, Characterization, and Applications of Bioactive Metallic Nanoparticles

Recent Advances in Green Synthesis, Characterization, and Applications of Bioactive Metallic Nanoparticles

A review of the green synthesis of ZnO nanoparticles using plant extracts and their prospects for application in antibacterial textiles

Surface parametric influences on the photocatalytic behaviour of zinc oxide nanoparticles

Contact Info

Product

Resources

About