Sol-gel technology for greener and more sustainable antimicrobial textiles that use silica matrices with C, and Ag and ZnO as biocides

Igal, Katerine; Zanotti, Karine; Zuin, Vânia Gomes; Vázquez, Patricia

doi:10.1016/j.crgsc.2021.100177

Cited by 9 publications

(5 citation statements)

References 33 publications

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“…Using green biomaterials as a viable alternative to fossil-based biomaterials opens many opportunities to process them via eco-friendly processing technologies. In recent years, a significant emphasis was mainly addressed on chemical methods based on green-inspired reactions (i.e., sol–gel technology, redox processes, pyrolysis, microwave, photo-chemical/electrochemical, hydrothermal) able to satisfy some sustainability issues posed by conventional synthesis methods [ 52 , 53 ]. This facilitates the development of different typologies of nanoparticles—i.e., basically made of inorganic materials—exhibiting bio-accumulative or toxic features that limit their applicability in the biomedical field, mainly due to reduced reproducibility of the final products and limited stability in biological fluids [ 54 , 55 ].…”

Section: Bioprocessing Techniquesmentioning

confidence: 99%

Green Routes for Bio-Fabrication in Biomedical and Pharmaceutical Applications

et al. 2023

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In the last decade, significant advances in nanotechnologies, rising from increasing knowledge and refining of technical practices in green chemistry and bioengineering, enabled the design of innovative devices suitable for different biomedical applications. In particular, novel bio-sustainable methodologies are developing to fabricate drug delivery systems able to sagely mix properties of materials (i.e., biocompatibility, biodegradability) and bioactive molecules (i.e., bioavailability, selectivity, chemical stability), as a function of the current demands for the health market. The present work aims to provide an overview of recent developments in the bio-fabrication methods for designing innovative green platforms, emphasizing the relevant impact on current and future biomedical and pharmaceutical applications.

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Section: Bioprocessing Techniquesmentioning

confidence: 99%

Green Routes for Bio-Fabrication in Biomedical and Pharmaceutical Applications

et al. 2023

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“…Common methods for preparing ZnO nanoparticles include sol–gel synthesis, precipitation, hydrothermal reaction, chemical vapor deposition, and thermal decomposition. , Among these methods, sol–gel synthesis stands out as a particularly advantageous technique due to its simplicity, cost-effectiveness, and ability to achieve precise control over the size and morphology of ZnO nanoparticles. Additionally, sol–gel synthesis offers the potential for enhanced purity and the incorporation of dopants or functionalization for tailored properties in various applications. , This synthesis method not only offers the possibility of producing high-quality materials of the same size on an industrial scale, but also corresponds to the current trend toward more sustainable and environmentally friendly manufacturing processes through integrated green synthesis or the use of sustainable materials. , …”

Section: Introductionmentioning

confidence: 99%

“…2,7 This synthesis method not only offers the possibility of producing high-quality materials of the same size on an industrial scale, 8 but also corresponds to the current trend toward more sustainable and environmentally friendly manufacturing processes through integrated green synthesis or the use of sustainable materials. 9,10 In cancer therapy, a key challenge is to overcome the resistance of tumors to conventional treatments while minimizing the harmful side effects. 4,11,12 Therefore, the targeted and efficient use of ZnO nanoparticles is of great importance.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Therapeutic Potential of Sol–Gel ZnO Nanocrystals: Anticancer, Antioxidant, and Antimicrobial Tri-Action

Eren,

Gunduz,

Kaymak

et al. 2024

ACS Omega

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Zinc oxide nanocrystals (ZnO NCs) hold great promise in nanomedicine with fascinating multifunctional properties. We investigated the therapeutic potential of sol−gel synthesized ZnO NCs with crystal sizes of 52.65 and 25.11 nm, focusing on their anticancer effects on HepG2 and HT29 cells, antioxidant properties, and antimicrobial activity. Both samples displayed a hexagonal wurtzite ZnO structure, wherein the crystal sizes diminished with lower calcination temperatures according to X-ray diffraction. The scanning electron microscopy analysis revealed that lowering the calcination temperature resulted in a decrease in the grain size of the ZnO NCs, as expected. This reduction in grain size combined with a decrease in crystal size resulted in a significant 40% reduction in the reflectance of the ZnO NCs in UV−vis−NIR spectroscopy. It was also observed that the ZnO NCs calcined at higher temperatures exhibited larger particle sizes with a reduced surface area mean of 69.30 μm and a stable negative zeta potential of −11.2 mV. In contrast, the ZnO NCs calcined at lower temperatures exhibited a larger surface area mean of 34.56 μm and a positive zeta potential of +10 mV. In both cell lines, the cytotoxic potential was found to be higher in HepG2 cells. Specifically, when ZnO nanocrystals (NCs) with a crystal size of 52.65 nm were used, the lowest cell viability was observed at a concentration of 5.74 μg/mL. Based on oxidative stress index values, a lower crystal size of ZnO NCs displayed greater effectiveness in HT29 cells, while a higher crystal size of ZnO NCs had pronounced effects in HepG2 cells. Moreover, both ZnO NCs exhibited significant antimicrobial activity against Gram-positive bacteria (Enterococcus faecalis and Staphylococcus aureus) and Candida parapsilopsis fungus. These findings emphasize sol−gel ZnO NCs' potential as versatile agents in nanomedicine, spurring research on targeted cancer therapies and antimicrobial innovations.

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“…Manufacturing coatings via a sol-gel process can have environmental benefits such as reduced processing times and energy requirements, can use non-toxic chemistries, and are often produced via scalable one-pot reactions [15][16][17]. Additionally, sol-gel coatings are typically an order of magnitude thinner than organic coating systems, resulting in VOC, CO2 and material reductions.…”

Section: Introductionmentioning

confidence: 99%

Processing and Weathering of Sol-Gel Clearcoats for Coil-Coated Steel

Watkins,

Griffiths,

Batchelor

et al. 2023

Coatings

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Clearcoats provide long-term aesthetics and protection for underlying coating systems, increasing product lifetimes. However, organic clearcoats are predominantly produced using fossil-fuel feedstocks. In search of a sustainable alternative, an experimental investigation was conducted on the development of glass-like clearcoats produced using the sol-gel process. The processing of sol-gel clearcoats over a pigmented polyurethane coating was studied by modifying the sol-gel solution pH, ageing, curing, precursor chemistry and deposition techniques. Under optimal formulation and processing conditions, defect-free sol-gel clearcoats were produced that have the potential to be scaled up to a coil-coating line using existing technologies. Mechanical testing demonstrated the coatings had excellent adhesion, hardness, and flexibility. Furthermore, accelerated laboratory weathering tests revealed the sol-gel coatings had superior degradation resistance compared to the organic coatings tested, resulting in negligible colour changes and higher gloss retention after 4000 h of exposure. The durability and environmental benefits of sol-gel clearcoats highlight their potential as a replacement for traditional organic clearcoats in a variety of applications.

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Sol-gel technology for greener and more sustainable antimicrobial textiles that use silica matrices with C, and Ag and ZnO as biocides

Cited by 9 publications

References 33 publications

Green Routes for Bio-Fabrication in Biomedical and Pharmaceutical Applications

Green Routes for Bio-Fabrication in Biomedical and Pharmaceutical Applications

Therapeutic Potential of Sol–Gel ZnO Nanocrystals: Anticancer, Antioxidant, and Antimicrobial Tri-Action

Processing and Weathering of Sol-Gel Clearcoats for Coil-Coated Steel

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