Structural features and adsorption behaviour of mesoporous silica particles formed from droplets generated in a spraying chamber

Andersson, Nina; Alberius, Peter; Pedersen, Jan Skov; Bergström, Lennart

doi:10.1016/j.micromeso.2004.04.019

Cited by 54 publications

(51 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 41 ] As a consequence, the mesophases transition usually observed for thin fi lms when the surfactant content increases (for example with CTAB: disordered → 3D-hexagonal → cubic → 2D-hexagonal or Lamellar) [ 180 ] is rarely observed for aerosolassisted particles wherein limit phase transitions to the wormlike → 2D-hexagonal → lamellar sequence. [ 41 , 123 ] To this date the only one example showing the following sequence disordered cubic → 2D-hexagonal → lamellar was reported by Andersson et al [ 124 ] with P104 block copolymers. In addition to that, well-oriented domains remain mainly at the periphery of particles while a disordered domain (worm-like type) appears in the core, excepted for the lamellar mesophase, which gives an onion-like structure throughout the particle.…”

Section: Infl Uence Of Organic Species On Formation Of Mesoporous Parmentioning

confidence: 99%

Aerosol Route to Functional Nanostructured Inorganic and Hybrid Porous Materials

Boissière¹,

Grosso²,

Chaumonnot³

et al. 2010

Advanced Materials

337

295

View full text Add to dashboard Cite

The major advances in the field of the designed construction of hierarchically structured porous inorganic or hybrid materials wherein multiscale texturation is obtained via the combination of aerosol or spray processing with sol-gel chemistry, self-assembly and multiple templating are the topic of this review. The available materials span a very large set of structures and chemical compositions (silicates, aluminates, transition metal oxides, nanocomposites including metallic or chalcogenides nanoparticles, hybrid organic-inorganic, biohybrids). The resulting materials are manifested as powders or smart coatings via aerosol-directed writing combine the intrinsic physical and chemical properties of the inorganic or hybrid matrices with defined multiscale porous networks having a tunable pore size and connectivity, high surface area and accessibility. Indeed the combination of soft chemical routes and spray processing provides "a wind of change" in the field of "advanced materials". These strategies give birth to a promising family of innovative materials with many actual and future potential applications in various domains such as catalysis, sensing, photonic and microelectronic devices, nano-ionics and energy, functional coatings, biomaterials, multifunctional therapeutic carriers, and microfluidics, among others.

show abstract

Section: Infl Uence Of Organic Species On Formation Of Mesoporous Parmentioning

confidence: 99%

Aerosol Route to Functional Nanostructured Inorganic and Hybrid Porous Materials

Boissière¹,

Grosso²,

Chaumonnot³

et al. 2010

Advanced Materials

337

295

View full text Add to dashboard Cite

show abstract

“…The chemical routes to mesostructured silica nanoparticles are not significantly different from that used for pure silica particle growth. In particular, many studies have been focusing on the use of the spray-drying technique (Andersson et al 2004). This is due to the fact that this process induces a fast evaporation step from precursors in solution to solid particles.…”

Section: Hybrid Silica Nanoparticle Formationmentioning

confidence: 99%

Silica-Based Nanoparticles for Intracellular Drug Delivery

Quignard

Masse

Coradin

2011

Intracellular Delivery

View full text Add to dashboard Cite

Silica-based nanoparticles have recently raised a great deal of attention as possible drug carriers. Such an interest is driven by the possibility to control their size, the chemical composition and the porous structure as well as to easily modify their surface with a wide range of biologically-relevant functionalities, favoring colloidal stability, long-time blood circulation and even specific targeting. Drug loading can be performed during particle formation but, at this time, the most popular method relies on the impregnation of pre-formed mesoporous colloids. Strategies to control drug delivery via bio-responsive pore capping are also developed. However, despite an increasing number of in vitro and in vivo studies related to the interaction of silica particles with cells and animals, their biocompatibility is still an issue, especially if applications in intracellular drug delivery are foreseen.

show abstract

“…We demonstrated the facile preparation of PMO with different organic contents in the frameworks by changing the BTSE/TEOS molar ratios of initial precursor solutions. To the best our knowledge, a systematical study focusing on the control of organic contents has not been reported thus far, though several spray-dried mesoporous materials with different compositions have been designed by adjusting the composition of precursor solutions [23][24][25][26][27][28][29][30][31][32][33][34]. We demonstrated here that ethane and benzene fragments were successfully embedded in the frameworks (up to a BTSE/TEOS molar ratio of 0.50) with the formation of ordered mesoporous structures.…”

Section: Introductionmentioning

confidence: 99%

“…silica [23][24][25][26][27], organosilica [28][29][30], maghemite-organosilica [31], carbon [32] and metal oxide [33]) have been prepared by spray drying (i.e. aerosol-assisted process) [34].…”

Section: Introductionmentioning

confidence: 99%

“…clear precursor solution) is sprayed through a nozzle into a hot steam gas, in which the supplied liquid is vaporized and droplets are dried immediately. The system used previously is not suitable for the continuous production of solids, because dried samples are collected using membrane filters [23][24][25][26][27][28][29][30][31][32][33][34]. Recently, we developed a laboratory-made apparatus suitable for rapid mass production and industrial uses [35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Aerosol-assisted synthesis of mesoporous organosilica microspheres with controlled organic contents

Yamauchi

Suzuki

Gupta

et al. 2009

Science and Technology of Advanced Materials

View full text Add to dashboard Cite

Periodic mesoporous organosilica (PMO) spherical particles with different organic contents were synthesized in one pot by reacting 1,2-bis(triethoxysilyl)ethane (BTSE) with tetraethylorthosilicate (TEOS) using a spray-drying technique. The scanning electron microscopy observation of spray-dried products clearly showed the formation of spherical particles. The 29 Si magic angle spinning nuclear magnetic resonance data revealed that the organic contents due to ethane fragments embedded in the frameworks were controllable and consistent with the BTSE/TEOS molar ratios of precursor solutions. Transmission electron microscopy, small-angle x-ray scattering, and N 2 adsorption data of PMO with controlled organic contents indicated that the ethane fragments were embedded in the frameworks with the formation of ordered mesostructures. PMO with a high organic content (BTSE/TEOS = 0.50) only showed a hydrophobic property. According to the same procedure, benzene groups were also integrated to a similar degree in the frameworks by using 1,4-bis(triethoxysilyl)benzene.

show abstract

Structural features and adsorption behaviour of mesoporous silica particles formed from droplets generated in a spraying chamber

Cited by 54 publications

References 49 publications

Aerosol Route to Functional Nanostructured Inorganic and Hybrid Porous Materials

Aerosol Route to Functional Nanostructured Inorganic and Hybrid Porous Materials

Silica-Based Nanoparticles for Intracellular Drug Delivery

Aerosol-assisted synthesis of mesoporous organosilica microspheres with controlled organic contents

Contact Info

Product

Resources

About