Experimental design applied to optimisation of silica nanoparticles size obtained by sonosynthesis

González-Álvarez, Rafael Jesús; Naranjo-Rodrı́guez, Ignacio; Hernández-Artiga, María P.; Palacios-Santander, José María; Aguilera, Laura Cubillana; Bellido-Milla, Dolores

doi:10.1007/s10971-016-4129-6

Cited by 14 publications

(7 citation statements)

References 50 publications

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“…In the case of the materials with AuNPs, the particle size ranged from 10–20 nm. The water increased the hydrolysis rate of the silica precursor and, consequently, the condensation was faster, promoting an increased growth of silica particles [ 75 ].…”

Section: Resultsmentioning

confidence: 99%

TiO2-SiO2 Coatings with a Low Content of AuNPs for Producing Self-Cleaning Building Materials

et al. 2018

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The high pollution levels in our cities are producing a significant increase of dust on buildings. An application of photoactive coatings on building materials can produce buildings with self-cleaning surfaces. In this study, we have developed a simple sol-gel route for producing Au-TiO2/SiO2 photocatalysts with application on buildings. The gold nanoparticles (AuNPs) improved the TiO2 photoactivity under solar radiation because they promoted absorption in the visible range. We varied the content of AuNPs in the sols under study, in order to investigate their effect on self-cleaning properties. The sols obtained were sprayed on a common building stone, producing coatings which adhere firmly to the stone and preserve their aesthetic qualities. We studied the decolourization efficiency of the photocatalysts under study against methylene blue and against soot (a real staining agent for buildings). Finally, we established that the coating with an intermediate Au content presented the best self-cleaning performance, due to the role played by its structure and texture on its photoactivity.

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Section: Resultsmentioning

confidence: 99%

TiO2-SiO2 Coatings with a Low Content of AuNPs for Producing Self-Cleaning Building Materials

et al. 2018

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“…Moreover, possible synergistic interactions between process factors are identified and provide detailed causal models for multiple process factors [ 17 , 32 , 33 , 34 ]. This approach has been used to study a wide range of chemical processes [ 35 , 36 , 37 , 38 ] and has also been successfully applied for the preparation of SNPs [ 39 , 40 , 41 , 42 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

Monodisperse Porous Silica/Polymer Nanocomposite Microspheres with Tunable Silica Loading, Morphology and Porosity

Steinbach

Fait

Mayer

et al. 2022

IJMS

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Hybrid organic/inorganic nanocomposites combine the distinct properties of the organic polymer and the inorganic filler, resulting in overall improved system properties. Monodisperse porous hybrid beads consisting of tetraethylene pentamine functionalized poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) particles and silica nanoparticles (SNPs) were synthesized under Stoeber sol-gel process conditions. A wide range of hybrid organic/silica nanocomposite materials with different material properties was generated. The effects of n(H2O)/n(TEOS) and c(NH3) on the hybrid bead properties particle size, SiO2 content, median pore size, specific surface area, pore volume and size of the SNPs were studied. Quantitative models with a high robustness and predictive power were established using a statistical and systematic approach based on response surface methodology. It was shown that the material properties depend in a complex way on the process factor settings and exhibit non-linear behaviors as well as partly synergistic interactions between the process factors. Thus, the silica content, median pore size, specific surface area, pore volume and size of the SNPs are non-linearly dependent on the water-to-precursor ratio. This is attributed to the effect of the water-to-precursor ratio on the hydrolysis and condensation rates of TEOS. A possible mechanism of SNP incorporation into the porous polymer network is discussed.

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“…As reported in the literature, Young's modulus measured by AFM for the hydrogel produced from human plasma was 1.5 kPa and increased to 8-10 kPa when Stöber silica nanoparticles (3 % w/v) were dispersed in the network [13]. These inorganic nanoparticles have tunable nanoscale size, mechanical stability, biodegradability, low toxicity, and versatility in surface chemical functionalization [34][35][36][37][38][39][40]. Organosilanes are efficient reagents to functionalize silica nanoparticles [41].…”

Section: Introductionmentioning

confidence: 75%

“…Unfunctionalized silica nanoparticles (S Nps) were prepared using a modified Stöber method [35]. In brief, 1.66 mmol TEOS were dropwise added to H 2 O: CH 3 CH 2 OH: NH 4 OH solution with a volume ratio of 3.40: 100: 3.78.…”

Section: Synthesis Of Silica Particles and Functionalization With Glymomentioning

confidence: 99%

Modulating the water behavior, microstructure, and viscoelasticity of plasma-derived hydrogels by adding silica nanoparticles with tailored chemical and colloidal properties

Galeano-Duque

Sharma

Mesa

2023

Materials Today Communications

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Experimental design applied to optimisation of silica nanoparticles size obtained by sonosynthesis

Cited by 14 publications

References 50 publications

TiO2-SiO2 Coatings with a Low Content of AuNPs for Producing Self-Cleaning Building Materials

TiO2-SiO2 Coatings with a Low Content of AuNPs for Producing Self-Cleaning Building Materials

Monodisperse Porous Silica/Polymer Nanocomposite Microspheres with Tunable Silica Loading, Morphology and Porosity

Modulating the water behavior, microstructure, and viscoelasticity of plasma-derived hydrogels by adding silica nanoparticles with tailored chemical and colloidal properties

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