Preparation methods of different nanomaterials for various potential applications: A review

El‐Khawaga, Ahmed M.; Zidan, Alaa; El‐Mageed, Ahmed I. A. Abd

doi:10.1016/j.molstruc.2023.135148

Cited by 75 publications

(31 citation statements)

References 191 publications

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“…Cobalt ferrites are employed often in sensors, recording devices, magnetic cards, solar cells, magnetic drug delivery, healthcare, catalysis, and biotechnology because of these properties 14 . CoFe 2 O 4 nanoparticles have been synthesized using a variety of preparation methods, including microemulsion 15 , sol–gel techniques 16 , hydrothermal synthesis 17 , solvothermal method 18 , co-precipitation 19 and green synthesis method by using Plant extract, Bacteria, Fungi and algea as biological agents for generation of nanomaterials 20 . Co-precipitation technique is one of these techniques, and it is simple and inexpensive to use to make cobalt ferrite nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Promising photocatalytic and antimicrobial activity of novel capsaicin coated cobalt ferrite nanocatalyst

El‐Khawaga

El-Sayed

Fahim³

et al. 2023

Sci Rep

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In this study, CoFe2O4 nanoparticles were prepared by the co-precipitation method then surface modified with Capsaicin (Capsicum annuum ssp.). The virgin CoFe2O4 NPs and Capsaicin-coated CoFe2O4 NPs (CPCF NPs) were characterized by XRD, FTIR, SEM, and TEM. The antimicrobial potential and photocatalytic degradation efficiencies of the prepared samples via Fuchsine basic (FB) were investigated. The results revealed that CoFe2O4 NPs have spherical shapes and their diameter varied from 18.0 to 30.0 nm with an average particle size of 25.0 nm. Antimicrobial activity was tested on Gram-positive (S. aureusATCC 52923) and Gram-negative (E. coli ATCC 52922) by disk diffusion and broth dilution methods to determine the zone of inhibition (ZOI) and minimum inhibitory concentration (MIC), respectively. UV-assisted photocatalytic degradation of FB was examined. Various parameters affecting the photocatalytic efficiency such as pH, initial concentration of FB, and dose of nanocatalyst were studied. The in-vitro ZOI and MIC results verified that CPCF NPs were more active upon Gram-Positive S. aureus ATCC 52923 (23.0 mm ZOI and 0.625 μg/ml MIC) than Gram-Negative E. coli ATCC 52922 (17.0 mm ZOI and 1.250 μg/ml MIC). Results obtained from the photocatalytic activity indicated that the maximum FB removal achieving 94.6% in equilibrium was observed using 20.0 mg of CPCF NPS at pH 9.0. The synthesized CPCF NPs were effective in the removal of FB and also as potent antimicrobial agent against both Gram-positive and Gram-negative bacteria with potential medical and environmental applications.

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Section: Introductionmentioning

confidence: 99%

Promising photocatalytic and antimicrobial activity of novel capsaicin coated cobalt ferrite nanocatalyst

El‐Khawaga

El-Sayed

Fahim³

et al. 2023

Sci Rep

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“…The preparation of small nanosized particles involves the breakdown of bulk precursor material using various physical methods, such as sputtering, grinding, milling, thermal or laser ablation. 51–55 These processes result in the formation of nanoparticles with reduced dimensions compared to the original bulk material. 56 Top–down methods are categorized into two type of methods:…”

Section: Synthetic Approaches For Metal Sulfide Nanoparticlesmentioning

confidence: 99%

Response surface methodology: a powerful tool for optimizing the synthesis of metal sulfide nanoparticles for dye degradation

Sandhu,

Raza,

Farwa

et al. 2023

Mater. Adv.

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“…Nanofabrication via bottom‐up techniques can be classified into vapor deposition, aerosol process, laser pyrolysis, sol–gel process, and biological methods. [ 115 ] These processes could easily prepare the nanostructures of the 2–10 nm range. [ 112 ] The bottom‐up methods are primarily employed to form well‐defined structures that occur naturally, and it is possible to produce ultrafine powders, porous microstructures, nanoshells, and nanotubes.…”

Section: Micro/nanoscale Technologies In Mechanical Metamaterialsmentioning

confidence: 99%

Advanced Fabrication of Mechanical Metamaterials Based on Micro/Nanoscale Technology

Chen,

Lin,

Salehi

et al. 2023

Adv Eng Mater

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In recent years, mechanical metamaterials have shown good mechanical properties such as ultra‐lightness, programmable stiffness, and tunable Poisson’s ratio through clever structural design of microstructures. Micro/nanotechnology has been used to ensure mechanical metamaterials’ fabrication quality and performance for use as structural substrates in multifunctional applications. Mechanical metamaterials are intentionally engineered with periodic microstructures in diverse shapes, allowing for the creation of complex structural substrates. However, this sophisticated design poses significant challenges in the fabrication process, particularly at the micro/nanoscale level, where current technology hinders mechanical metamaterials’ performance improvement and function realization. This review explores the fabrication processes of mechanical metamaterials using micro/nanotechnology and showcase recent progress and future trends. Particular attention is given to recent development, challenges, and future trends in advanced fabrication technologies for mechanical metamaterials. This survey aims to explain why mechanical metamaterials have significant benefits and are well‐suited as structural substrates for multifunctional applications, what advanced fabrication technologies at the micro/nanoscale have been introduced to prepare mechanical metamaterials and how to overcome manufacturing technology bottlenecks of mechanical metamaterials in terms of synthesis, materials and design method.This article is protected by copyright. All rights reserved.

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Preparation methods of different nanomaterials for various potential applications: A review

Cited by 75 publications

References 191 publications

Promising photocatalytic and antimicrobial activity of novel capsaicin coated cobalt ferrite nanocatalyst

Promising photocatalytic and antimicrobial activity of novel capsaicin coated cobalt ferrite nanocatalyst

Response surface methodology: a powerful tool for optimizing the synthesis of metal sulfide nanoparticles for dye degradation

Advanced Fabrication of Mechanical Metamaterials Based on Micro/Nanoscale Technology

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