Medium-high frequency sonication dominates spherical-SiO2 nanoparticle size

Liu, Xiaolin; Wu, Zhilin; Manzoli, Maela; Jicsinszky, László; Cavalli, Roberta; Battaglia, Luigi; Cravotto, Giancarlo

doi:10.1016/j.ultsonch.2022.106181

Cited by 6 publications

(5 citation statements)

References 66 publications

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“…In general, the effects of ultrasound irradiation during particle precipitation from the homogeneous phase include particle refinement and increased yield and have been applied to various systems. Finer silica particles can be obtained in the St

ber method by ultrasound irradiation during precipitation [24] . Ultrasound-induced particle refinement is believed to be due to an increase in nucleation, which is induced at the bubble interface [24] , [41] , [42] .…”

Section: Resultsmentioning

confidence: 99%

“…Finer silica particles can be obtained in the St

Section: Resultsmentioning

confidence: 99%

“…Ultrasound is a promising method for material synthesis [11] , [12] , [13] because various physicochemical processes can be performed at room temperature, such as agitation, dispersion, acceleration of chemical reactions, and generation of radical species [14] , [15] , [16] , [17] , [18] , [19] , [20] . Ultrasound processes have been examined for the synthesis of colloidal silica using the St

ber method [21] , [22] , [23] , [24] , [25] . However, in most cases, ultrasound has only been used as an adjunct to existing methods to increase yield, shorten time, and lower the temperature.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Facile room temperature synthesis of size-controlled spherical silica from silicon metal via simple sonochemical process

Zushi,

Hayashi,

Yamanaka

et al. 2024

Ultrasonics Sonochemistry

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Section: Resultsmentioning

confidence: 99%

“…Finer silica particles can be obtained in the St

Section: Resultsmentioning

confidence: 99%

ber method [21] , [22] , [23] , [24] , [25] . However, in most cases, ultrasound has only been used as an adjunct to existing methods to increase yield, shorten time, and lower the temperature.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Facile room temperature synthesis of size-controlled spherical silica from silicon metal via simple sonochemical process

Zushi,

Hayashi,

Yamanaka

et al. 2024

Ultrasonics Sonochemistry

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“…The achievable particle sizes in these devices depend on both the applied frequency and energy. Higher frequency/energy is better for the preparation of micro- or nanoparticles [ 90 ], but the situation is not so clear for chemical reactions [ 91 ]. The size of the cavitation bubbles varies inversely with energy and frequency, which can significantly affect chemical reactions in aqueous solutions [ 92 ].…”

Section: Discussionmentioning

confidence: 99%

Comparison of the Conventional and Mechanochemical Syntheses of Cyclodextrin Derivatives

et al. 2023

Self Cite

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Many scientists are working hard to find green alternatives to classical synthetic methods. Today, state-of-the-art ultrasonic and grinding techniques already drive the production of organic compounds on an industrial scale. The physicochemical and chemical behavior of cyclodextrins often differs from the typical properties of classic organic compounds and carbohydrates. The usually poor solubility and complexing properties of cyclodextrins can require special techniques. By eliminating or reducing the amount of solvent needed, green alternatives can reform classical synthetic methods, making them attractive for environmentally friendly production and the circular economy. The lack of energy-intensive synthetic and purification steps could transform currently inefficient processes into feasible methods. Mechanochemical reaction mechanisms are generally different from normal solution-chemistry mechanisms. The absence of a solvent and the presence of very high local temperatures for microseconds facilitate the synthesis of cyclodextrin derivatives that are impossible or difficult to produce under classical solution-chemistry conditions. Although mechanochemistry does not provide a general solution to all problems, several good examples show that this new technology can open up efficient synthetic pathways.

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“…For the dispersion of SiNPs in alginate, we used probe sonication (Sonics VCX 750, model CV334, Sonics & Materials, Newtown, CT, USA) with the following parameters: 20 kHz, 5 min, 80% amplitude, pulse 15 sec, and pause 30 sec ( Retamal Marín et al., 2017 ; Liu et al., 2022 ).…”

Section: Methodsmentioning

confidence: 99%

Mechanistic insights into the plant biostimulant activity of a novel formulation based on rice husk nanobiosilica embedded in a seed coating alginate film

Tritean,

Trică,

Dima

et al. 2024

Front. Plant Sci.

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Seed coating ensures the targeted delivery of various compounds from the early stages of development to increase crop quality and yield. Silicon and alginate are known to have plant biostimulant effects. Rice husk (RH) is a significant source of biosilica. In this study, we coated mung bean seeds with an alginate–glycerol–sorbitol (AGS) film with embedded biogenic nanosilica (SiNPs) from RH, with significant plant biostimulant activity. After dilute acid hydrolysis of ground RH in a temperature-controlled hermetic reactor, the resulting RH substrate was neutralized and calcined at 650°C. The structural and compositional characteristics of the native RH, the intermediate substrate, and SiNPs, as well as the release of soluble Si from SiNPs, were investigated. The film for seed coating was optimized using a mixture design with three factors. The physiological properties were assessed in the absence and the presence of 50 mM salt added from the beginning. The main parameters investigated were the growth, development, metabolic activity, reactive oxygen species (ROS) metabolism, and the Si content of seedlings. The results evidenced a homogeneous AGS film formation embedding 50-nm amorphous SiNPs having Si–O–Si and Si–OH bonds, 0.347 cm3/g CPV (cumulative pore volume), and 240 m2/g SSA (specific surface area). The coating film has remarkable properties of enhancing the metabolic, proton pump activities and ROS scavenging of mung seedlings under salt stress. The study shows that the RH biogenic SiNPs can be efficiently applied, together with the optimized, beneficial alginate-based film, as plant biostimulants that alleviate saline stress from the first stages of plant development.

show abstract

Medium-high frequency sonication dominates spherical-SiO2 nanoparticle size

Cited by 6 publications

References 66 publications

Facile room temperature synthesis of size-controlled spherical silica from silicon metal via simple sonochemical process

Facile room temperature synthesis of size-controlled spherical silica from silicon metal via simple sonochemical process

Comparison of the Conventional and Mechanochemical Syntheses of Cyclodextrin Derivatives

Mechanistic insights into the plant biostimulant activity of a novel formulation based on rice husk nanobiosilica embedded in a seed coating alginate film

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