Hierarchical Porous SiO2 Cryogel via Sol-Gel Process

Horváth, Marius; Sinkó, Katalin

doi:10.3390/gels8120808

Cited by 5 publications

(3 citation statements)

References 21 publications

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“…Sol-gel method offers advantages over green synthesis by providing superior control over the morphology and particle size of NPs (Arya et al, 2021). Sol-gel approach entails hydrolysis and condensation of specific precursor substances, such as tetra-ethyl ortho-silicate or sodium silicate (Na2SiO3), in the hydrogen chloride or ammonia presence as a catalyst (Horváth and Sinkó, 2022). Furthermore, by amending the Stober method, various kinds of SiNPs can be obtained (Sarkar et al, 2022).…”

Section: Synthesis Of Sinpsmentioning

confidence: 99%

Role of silica nanoparticles in enhancing drought tolerance of cereal crops

SULAIMAN,

EL-BELTAGI,

SHEHATA

et al. 2023

Not Bot Horti Agrobo

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Cereal crops are essential for providing essential nutrients and energy in the daily human diet. Additionally, they have a crucial role as a significant constituent of cattle feed, hence enhancing meat production. Drought, being an abiotic stressor, adversely affects the growth and yield of numerous crops on a global scale. This issue poses a significant and pressing obstacle to maintaining global cereal crop production and ensuring food security. Nanoparticles have become a valuable resource for improving cereal crop yield and productivity under ongoing rapid climate change and escalating drought conditions. Among these, silica nanoparticles (SiNPs) have demonstrated their potential for agricultural applications in regions with limited water availability. Drought stress has detrimental effects on cereal crops, impacting their growth, metabolic, and physiological processes, hampering water and nutrient absorption, disrupting cellular membranes, damaging the photosynthetic apparatus, and reducing antioxidant activities by altering gene expression. SiNPs help preserve cellular membranes, regulate water balance, and improve water and nutrient absorption, resulting in a substantial enhancement in plant growth under water-deficit conditions. SiNPs also protect the photosynthetic system and enhance its efficiency, facilitate the accumulation of phenolics, hormones, osmolytes, antioxidant activities, and gene expression, thus empowering plants with increased resistance to drought stress. Moreover, SiNPs decrease leaf water loss by promoting stomatal closure, primarily by fostering the accumulation of abscisic acid (ABA) and mitigating oxidative stress damage by activating the antioxidant defence system and reducing reactive oxygen species (ROS). However, a limited number of studies examine the role of SiNPs in cereal crops under drought stress conditions. In this review, we highlighted the promising potential of SiNPs to improve cereal crop resilience by changing morpho-histological traits, antioxidant properties, and gene expression to maintain food security in drought-prone areas. This study will aid researchers in using SiNPs as an environmentally benign way to improving drought resistance in cereal crops in order to fulfill global food supply needs.

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Section: Synthesis Of Sinpsmentioning

confidence: 99%

Role of silica nanoparticles in enhancing drought tolerance of cereal crops

SULAIMAN,

EL-BELTAGI,

SHEHATA

et al. 2023

Not Bot Horti Agrobo

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“…Hence, in many countries, CT is used in traditional and modern medicine, cosmetics, agriculture, and the food industry [ 42 , 43 ]. Sol-gel is known as an environmentally friendly synthesis method and is economically viable [ 44 , 45 , 46 ]. Briefly, it consists of three stages hydrolysis, polycondensation, and thermal densification [ 47 ].…”

Section: Introductionmentioning

confidence: 99%

Anticorrosion and Antimicrobial Evaluation of Sol-Gel Hybrid Coatings Containing Clitoria ternatea Modified Clay

Sheydaei,

Edraki,

Radeghi Mehrjou

2023

Gels

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In this study, Clitoria ternatea (CT) was incorporated into the structure of sodium montmorillonite (Na+-MMT), then these new nanoparticles (CT-MMT) were added to sol-gel-based hybrid silanol coatings (SGC). The results of the CT-MMT investigation using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscope (TEM) confirmed the presence of CT in the structure. The results of polarization and electrochemical impedance spectroscopy (EIS) tests showed that the presence of CT-MMT in the matrix improves corrosion resistance. The EIS results showed that the coating resistance (Rf) of the sample containing 3 wt.% CT-MMT after immersion was 687 Ω·cm2, while this value was 218 Ω·cm2 for pure coating. CT and MMT compounds improve corrosion resistance by blocking anodic and cathodic regions, respectively. Additionally, the presence of CT in the structure created antimicrobial properties. CT contains phenolic compounds that have the ability to suppress by membrane perturbation, reduction of host ligands adhesion, and neutralizing bacterial toxins. Therefore, CT-MMT showed inhibitory effects and killing of Staphylococcus aureus (gram-positive bacteria) and Salmonella paratyphi-A serotype (gram-negative bacteria), and also improved corrosion resistance.

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“…Among the options that have undergone significant development in recent years, the sol-gel process stands out as a very versatile, environmentally friendly and economically viable synthesis method [ 18 , 19 ]. It basically consists of the chemical reaction of precursors in three successive stages: a first hydrolysis stage, followed by polycondensation and finally, thermal densification.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Low-Toxic Hybrid Sol-Gel Coatings with Organic pH-Sensitive Inhibitors for Corrosion Protection of AA2024 Aluminium Alloy

Serrano

López-Sánchez

García-Galván

et al. 2023

Gels

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Today’s environmental needs require the reduction of the weight of vehicles, thus reducing fuel consumption and associated emissions. For this reason, the use of light alloys is being studied, which, due to their reactivity, must be protected before use. In this work, the effectiveness of a hybrid sol-gel coating doped with various organic environmentally friendly corrosion inhibitors applied to an AA2024 lightweight aluminium alloy is evaluated. Some of the inhibitors tested are pH indicators, acting as both corrosion inhibitors and optical sensors for the surface of the alloy. Samples are subjected to a corrosion test in a simulated saline environment and characterised before and after the test. The experimental results regarding their best inhibitor performance for their potential application in the transport industry are evaluated.

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Hierarchical Porous SiO2 Cryogel via Sol-Gel Process

Cited by 5 publications

References 21 publications

Role of silica nanoparticles in enhancing drought tolerance of cereal crops

Role of silica nanoparticles in enhancing drought tolerance of cereal crops

Anticorrosion and Antimicrobial Evaluation of Sol-Gel Hybrid Coatings Containing Clitoria ternatea Modified Clay

Evaluation of Low-Toxic Hybrid Sol-Gel Coatings with Organic pH-Sensitive Inhibitors for Corrosion Protection of AA2024 Aluminium Alloy

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