Fine-tuning the release of molecular guests from mesoporous silicas by controlling the orientation and mobility of surface phenyl substituents

Manzano, J. Sebastián; Singappuli-Arachchige, Dilini; Parikh, Bosky Lalitkumar; Slowing, Igor I.

doi:10.1016/j.cej.2017.12.015

Cited by 14 publications

(7 citation statements)

References 51 publications

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“…Functionalized MSN-PNB samples (25.0 mg each) were introduced into a dialysis membrane (Spectrum Labs, MW cutoff = 12-14 kDa) and immersed into an aqueous HCl solution of pH 5 (10.0 mL). The intact aqueous solution was continuously circulated through a quartz flow cuvette as described in a previous work, 29 and the absorption band at 274 nm was monitored for 7 h via UV-vis spectroscopy, taking scans every 5 min. Three separate hydrolysis experiments were performed for each material, and the results were averaged.…”

Section: Hydrolysis Of Pnb Acetalmentioning

confidence: 99%

Control of interfacial pH in mesoporous silica nanoparticles via surface functionalization

Singappuli-Arachchige

Slowing

2020

The Journal of Chemical Physics

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Section: Hydrolysis Of Pnb Acetalmentioning

confidence: 99%

Control of interfacial pH in mesoporous silica nanoparticles via surface functionalization

Singappuli-Arachchige

Slowing

2020

The Journal of Chemical Physics

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“…IPNs are three-dimensional network structures composed of two or more interpenetrating polymers with no chemical bonds between them [ 33 , 34 ]. The cross-linking of silica and KGM frameworks in the aerogel networks significantly improves the toughness, while also reducing the porosity and transparency of the samples [ 35 , 36 , 37 ]. The physical blending method, in which SiO 2 aerogel particles are mixed and gelled with a second-phase material to form composite aerogels, is a fast, simple, and low-cost classical method for preparing organic–inorganic composite aerogels.…”

Section: Introductionmentioning

confidence: 99%

Study on the Influence of the Preparation Method of Konjac Glucomannan-Silica Aerogels on the Microstructure, Thermal Insulation, and Flame-Retardant Properties

et al. 2023

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Natural polysaccharides with high viscosity, good thermal stability, and biocompatibility can improve the mechanical properties of inorganic silica aerogels and enhance their application safety. However, the effects of the preparation methods of polysaccharide-silica aerogels on their microstructure and application properties have not been systematically studied. To better investigate the effect of the microstructure on the properties of aerogel materials, two aerogels with different structures were prepared using Konjac glucomannan (KGM) and tetraethoxysilane (TEOS) via physical blending (KTB) and co-precursor methods (KTC), respectively. The structural differences between the KTB and KTC aerogels were characterized, and the thermal insulation and fire-retardant properties were further investigated. The compressive strength of the KTC aerogels with a cross-linked interpenetrating network (IPN) structure was three times higher than that of the KTB aerogels, while their thermal conductivity was 1/3 of that of the KTB aerogels. The maximum limiting oxygen index (LOI) of the KTC aerogels was 1.4 times, the low peak heat release rate (PHRR) was reduced by 61.45%, and the lowest total heat release (THR) was reduced by 41.35% compared with the KTB aerogels. The results showed that the KTC aerogels with the IPN have better mechanical properties, thermal insulation, and fire-retardant properties than the simple physically blending KTB aerogels. This may be due to the stronger hydrogen-bonding interactions between KGM and silica molecules in the KTC aerogels under the unique forcing effect of the IPN, thus enhancing their structural stability and achieving complementary properties. This work will provide new ideas for the microstructure design of aerogels and the research of new thermal insulation and fire-retardant aerogels.

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“…Pharmaceutical wastes have reached the emerging level in aquatic ecosystem especially in seawater. Several research showed that the amounts of pharmaceutical wastes in seawater as 0.1–3551.7 ng L −1 , which reveals that the urgency in the treatment of pharmaceutical wastes [ 1 , 2 ]. Ibuprofen (IBP), as one example of pharmaceutical wastes, is the big five of the pharmaceutical products produced that reach 450 kilotons per year [ 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal effect of gunningite use Pluronic F127-Gelatin as template and the ibuprofen adsorption performance

Ulfa¹,

Iswanti²,

Irwanti³

et al. 2023

Heliyon

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Fine-tuning the release of molecular guests from mesoporous silicas by controlling the orientation and mobility of surface phenyl substituents

Cited by 14 publications

References 51 publications

Control of interfacial pH in mesoporous silica nanoparticles via surface functionalization

Control of interfacial pH in mesoporous silica nanoparticles via surface functionalization

Study on the Influence of the Preparation Method of Konjac Glucomannan-Silica Aerogels on the Microstructure, Thermal Insulation, and Flame-Retardant Properties

Hydrothermal effect of gunningite use Pluronic F127-Gelatin as template and the ibuprofen adsorption performance

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