ZnO nanoparticles prepared via a green synthesis approach: Physical properties, photocatalytic and antibacterial activity

Aldeen, Thana Shuga; Mohamed, Hamza Elsayed Ahmed; Mâaza, M.

doi:10.1016/j.jpcs.2021.110313

Cited by 239 publications

(76 citation statements)

References 37 publications

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“…Comparatively, our teetotum-like ZnO nanocrystals are more efficient and degrade MB molecules faster than the near-spherical activated by V Zn + V + O defects reported by Ferreira et al [4] that found the maximum degradation of 30.67% and reaction rate of 2.9 × 10 −3 min −1 after 120 min of irradiation with visible light. The defective spherical nanocrystals of Aldeen et al [18] displayed an MB overall degradation of ~98%, but the reaction kinetic (3.7 × 10 −3 min −1 ) was significantly slower than the reported in the present work. Moreover, these authors have used UV illumination, which is a more energetic light source and properly can lead to the destruction of MB molecules.…”

Section: Resultscontrasting

confidence: 73%

“…Several other recent reports have also demonstrated that green synthesized ZnO nanocrystals can be used for photocatalytic purposes [15][16][17][18][19]. Such approaches have been increased due to the expansion of the textile industry, where factories use synthetic dyes composed of R − N = N − R chromophore group that is generally part of aromatic rings [20].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the Photocatalytic Activity of Distinctive-Shaped ZnO Nanocrystals Synthesized Using Latex of Different Plants Native to the Amazon Rainforest

et al. 2022

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ZnO nanocrystals with three different morphologies have been synthesized via a simple sol-gel-based method using Brosimum parinarioides (bitter Amapá) and Parahancornia amapa (sweet Amapá) latex as chelating agents. X-ray diffraction (XRD) and electron diffraction patterns (SAED) patterns showed the ZnO nanocrystals were a pure hexagonal wurtzite phase of ZnO. XRD-based spherical harmonics predictions and HRTEM images depicted that the nanocrystallites constitute pitanga-like (~15.8 nm), teetotum-like (~16.8 nm), and cambuci-like (~22.2 nm) shapes for the samples synthesized using bitter Amapá, sweet Amapá, and bitter/sweet Amapá chelating agent, respectively. The band gap luminescence was observed at ~2.67–2.79 eV along with several structural defect-related, blue emissions at 468–474 nm (VO, VZn, Zni), green emissions positioned at 513.89–515.89 (h-), and orange emission at 600.78 nm (–). The best MB dye removal efficiency (85%) was mainly ascribed to the unique shape and oxygen vacancy defects found in the teetotum-like ZnO nanocrystals. Thus, the bitter Amapá and sweet Amapá latex are effective chelating agents for synthesizing distinctive-shaped ZnO nanocrystals with highly defective and remarkable photocatalytic activity.

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Section: Resultscontrasting

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Evaluation of the Photocatalytic Activity of Distinctive-Shaped ZnO Nanocrystals Synthesized Using Latex of Different Plants Native to the Amazon Rainforest

et al. 2022

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“…aeruginosa, B. subtilis, and so forth. , In this study, the antibacterial properties of ZnO nanoparticles synthesized using B. orellana leaf, seed, and seed coat extracts were analyzed before and after calcination with the help of Gram positive (S.…”

Section: Results and Discussionmentioning

confidence: 99%

Non-antimicrobial and Non-anticancer Properties of ZnO Nanoparticles Biosynthesized Using Different Plant Parts of Bixa orellana

2022

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As traditional cancer therapy is toxic to both normal and cancer cells, there is a need for newer approaches to specifically target cancer cells. ZnO nanoparticles can be promising due their biocompatible nature. However, ZnO nanoparticles have also shown cytotoxicity against mammalian cells in some cases, because of which there is a need for newer synthesis approaches for biocompatible ZnO nanoparticles to be used as carrier molecules in drug delivery applications. Here, we report the biosynthesis of ZnO nanoparticles using different plant parts (leaf, seed, and seed coat) of Bixa orellana followed by different characterizations. The UV−visible spectra of ZnO showed absorption maxima at 341 and 353 nm, 378 and 373 nm, and 327 and 337 nm, respectively, before and after calcination corresponding to the band gap energy of 3.636 and 3.513 eV, 3.280 and 3.324 eV, and 3.792 and 3.679 eV for L-ZnO, S-ZnO, and Sc-ZnO, respectively. Xray diffraction analysis confirmed the formation of hexagonal wurtzite structures. Attenuated total reflectance infrared spectra revealed the presence of stretching vibrations of C−C, CC, CO, and NH 3 + groups along with C−H deformation involving biomolecules from extracts responsible for reduction and stabilization of nanoparticles. Field emission scanning electron microscopy and transmission electron microscopy images showed spherical and almond-like morphologies of L-ZnO and Sc-ZnO with spherical morphologies, whereas S-ZnO showed almond-like morphologies. The presence of antibacterial activity was observed in L-ZnO against Staphylococcus aureus and Bacillus subtilis, in S-ZnO nanoparticles only against Escherichia coli, and in Sc-ZnO only against Staphylococcus aureus. Uncalcinated ZnO nanoparticles showed weak antibacterial activities, whereas calcinated ZnO nanoparticles showed a non-antibacterial nature. The antifungal activity against different fungi (Penicillium sp., Aspergillus flavus, Fusarium oxysporum, and Rhizoctonia solani) and cytotoxicity against HCT-116 cancer cells were not observed before and after calcination in all three ZnO nanoparticles. The antimicrobial nature and biocompatibility of ZnO nanoparticles were influenced by different parameters of the nanoparticles along with microorganisms and the human cells. Non-antimicrobial properties of ZnO nanoparticles can be treated as a pre-requisite for its biocompatibility due to its inert nature. Thus, biosynthesized ZnO nanoparticles showed a nontoxic nature, which can be exploited as promising alternatives in biomedical applications.

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“…The microorganisms have become resistant due to several factors, such as drug use or genetic mutations. ZnO NPs are potential bacteriostatic and bactericidal agents that lead to cell death of these microorganisms. − In addition, ZnO has high degradability and biocompatibility and does not affect fabric dyeing.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Antibacterial Activity of Polyamide Fabrics Containing ZnO Nanoparticles

Garcia

Silva

Sorrechia

et al. 2022

ACS Appl. Bio Mater.

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In this study, we present an unprecedented study on the influence of parameters such as dyeing, softening, and number of washes on the maintenance of the antibacterial activity of polyamide fabrics containing zinc oxide nanoparticles (ZnO NPs) impregnated by a simple and easy-to-scale technique. ZnO NPs were synthesized by the sol–gel method at different reaction times (1, 3, and 24 h), followed by surface modification with (3-glycidyloxypropyl)trimethoxysilane (GPTMS) and water dispersion. The reaction times of ZnO NP synthesis were modified to evaluate their influence on particle size and antibacterial activity after impregnation in fabrics. The presence of ZnO NPs in fabrics was observed by different techniques such as X-ray diffraction, infrared vibrational spectroscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The mean diameter values of the ZnO NPs calculated in this work from different techniques remained at 5 nm regardless of the reaction time revealing the efficient control of the nanoparticle size, important for desired applications as ZnO NPs smaller than 10 nm show improved antibacterial activity. The antibacterial activity of fabrics containing ZnO NPs indicated that polyamide fabrics after impregnation with ZnO NPs synthetized have great and similar biocidal potential against Staphylococcus aureus and Escherichia coli both with and without the presence of a fabric softener or a dye. The antibacterial behavior of the different polyamide fabrics remained after 10 and 20 washing cycles. The results shown in this study demonstrated the possibility of obtaining polyamide fabrics containing ZnO NPs with the antibacterial activity resistant to chemical treatments used by industries as a softener or a dye. The results also reveal the maintenance of the antimicrobial activity of fabrics after several washing cycles. The reaction time of 1 for the production of ZnO NPs and the versatility of polyamide fabrics allow their application in different environments to control microbial infections.

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ZnO nanoparticles prepared via a green synthesis approach: Physical properties, photocatalytic and antibacterial activity

Cited by 239 publications

References 37 publications

Evaluation of the Photocatalytic Activity of Distinctive-Shaped ZnO Nanocrystals Synthesized Using Latex of Different Plants Native to the Amazon Rainforest

Evaluation of the Photocatalytic Activity of Distinctive-Shaped ZnO Nanocrystals Synthesized Using Latex of Different Plants Native to the Amazon Rainforest

Non-antimicrobial and Non-anticancer Properties of ZnO Nanoparticles Biosynthesized Using Different Plant Parts of Bixa orellana

Sustainable Antibacterial Activity of Polyamide Fabrics Containing ZnO Nanoparticles

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