Preparation and characterization of spray-pyrolyzed porous SiO2 nanoparticles for low dielectric constant applications

Ningsih, Henni Setia; Bakare, Fetene Fufa; Liu, Yucheng; Chou, Yu-Jen

doi:10.1007/s41779-021-00629-7

Cited by 2 publications

(3 citation statements)

References 18 publications

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“…It has been shown that both BG powders have spherical particle morphology depending on the SEM images presented in Figure 2. Tis is attributed to the "one particle per drop" or distinctive particle generation principle of the spray pyrolysis technique [27]. Moreover, it is clear from the TEM images shown in Figure 3 reveal that pure BG powders have solid structures, whereas PEG-derived BG powders exhibit hollow structures.…”

Section: Resultsmentioning

confidence: 95%

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Effect of Morphology on the In Vitro Bioactivity and Biocompatibility of Spray Pyrolyzed Bioactive Glass

Chuni

Dachasa

Aga

et al. 2023

Advances in Materials Science and Engineering

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Because of its fundamental characteristics, including bioactivity, biodegradability, and nontoxicity, bioactive glasses (BGs) become among the most impressive materials in the area of biomedical applications. It is primarily utilized in the applications of dermal fillers, orthopedic implants, and pharmaceutical delivery systems. Here in this study, simple and continuous methods were employed to produce hollow spherical bioactive glasses (HSBGs) microspheres. Using a spray pyrolysis method, solid and hollow spherical particles were successfully synthesized, and the particle formation mechanism was also discussed in detail. Surface and inner morphologies of synthesized bioactive glass (BG) powders were investigated using scanning electron microscopy (SEM) and transmission electron microscopy (TEM), respectively. BET was employed to measure the pore volume as well as specific surface area for pure BG and BG-derived-PEG powders; all p values are below 0.05, demonstrating noticeable distinction among both forms of synthesized powders. Using energy dispersive spectroscopy (EDS), the constituent components of prepared samples were assessed. In addition, by immersing samples in simulated bodily fluid (SBF) for 12 hr, in vitro bioactivity was tested by SEM. The viability of cells for both BG specimens was evaluated at various extraction concentrations by MTT assay (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenylte-trazolium bromide) for 72 hr. Relying on the Ca/P ratio obtained from SEM-EDS, HSBGs possessed higher hydroxyapatite-forming capacity than solid bioactive glasses (SBGs). In addition, the cell viability of both specimens showed that at all extraction concentrations, they pass the standard biocompatibility levels. Therefore, the HSBGs have better biocompatibility and in vitro bioactivity; hence they are promising for future tissue-engineering development.

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Section: Resultsmentioning

confidence: 95%

“…However, the entire procedure involves batch production and takes two to three days. On contrary, the pros of spray pyrolysis (SP) are relatively inexpensive, quick processing, and continuous production [4,27,28].…”

Section: Introductionmentioning

confidence: 99%

Effect of Morphology on the In Vitro Bioactivity and Biocompatibility of Spray Pyrolyzed Bioactive Glass

Chuni

Dachasa

Aga

et al. 2023

Advances in Materials Science and Engineering

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“…Cetyltrimethylammonium bromide (CTAB), poly(ethylene glycol) (PEG), polyurethane (PU), and Pluronics (i.e., synthetic block copolymers such as P123: EO20-PO70-EO20 and F127: EO106-PO70-EO106) are the typical surfactants used as pore-forming agents for synthesizing porous BGs [24][25][26][27]. However, the use of surfactants could lead to problems such as micelle aggregation and carbon contamination [28].…”

Section: Introductionmentioning

confidence: 99%

Citric Acid Catalyst-Assisted Bioactive Glass with Hydrogen Peroxide for In Vitro Bioactivity and Biodegradability Using Sol-Gel Method

Aklilu,

Ewnete,

Dachasa

et al. 2023

International Journal of Biomaterials

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In this study, carbon-free and completely soluble hydrogen peroxide (H2O2) was utilized in place of conventional surfactants as a pore-forming agent. Citric acid was also used in low concentration for the hydrolysis reaction. A sol-gel method was used to prepare bioactive glass (BG) specimens of H2O2-untreated BG, 1M, 2M, and 3M H2O2-treated BGs. X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), energy-dispersive spectroscopy (EDS), and nitrogen adsorption/desorption isotherm with the Brunauer–Emmett–Teller (BET) method were used for analyzing the samples’ phase, surface morphology, chemical composition, constituent composition, pore size, and specific surface area respectively. In vitro bioactivity, as well as biodegradability tests, was performed on samples by immersing them in simulated body fluid (SBF) solution. According to the results, BG particles treated with 2 M H2O2 exhibited higher specific surface area (SSA), which is 189.55 cc/g, and better in vitro bioactivity and biodegradability.

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Preparation and characterization of spray-pyrolyzed porous SiO2 nanoparticles for low dielectric constant applications

Cited by 2 publications

References 18 publications

Effect of Morphology on the In Vitro Bioactivity and Biocompatibility of Spray Pyrolyzed Bioactive Glass

Effect of Morphology on the In Vitro Bioactivity and Biocompatibility of Spray Pyrolyzed Bioactive Glass

Citric Acid Catalyst-Assisted Bioactive Glass with Hydrogen Peroxide for In Vitro Bioactivity and Biodegradability Using Sol-Gel Method

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