Preparation of core–shell mesoporous silica nanoparticles with bimodal pore structures by regrowth method

Ishii, Hirotaka; Ikuno, Takaaki; Shimojima, Atsushi; Okubo, Tatsuya

doi:10.1016/j.jcis.2015.01.057

Cited by 19 publications

(11 citation statements)

References 35 publications

(37 reference statements)

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“…Apart from MSCSNs, mesoporous carbon and titania microspheres also exhibit great potential for applications in energy conversion and sensing . Recently, hierarchically structured mesoporous silica‐based core–shell nanoparticles have become an emerging field . Different core–shell pore sizes, uniformly distributed over the entire nanoparticle, are proposed to create a unique nanosystem for further‐reaching applications in the aforementioned areas.…”

Section: Introductionmentioning

confidence: 99%

“…Such multistep syntheses are promising in controlling the core and shell properties, but are considered tedious and not easy to handle. Hence, a simple procedure for the fabrication of MSCSNs, ideally a one‐pot synthesis, seems more attractive …”

Section: Introductionmentioning

confidence: 99%

“…[13,14] Recently,h ierarchically structured mesoporous silica-based core-shell nanoparticles have become an emerging field. [15][16][17][18][19][20][21][22][23][24][25] Different core-shell pore sizes, uniformly distributed over the entire nanoparticle, are proposed to create au nique nanosystem for further-reaching applications in the aforementioned areas. However,t he fabrication of perfectly uniform core-shell nanoparticles requires the coating of ap reformedc ore with a porouss hell, which will counteract the formation of multicomposite aggregateso fv arious shapes.…”

Section: Introductionmentioning

confidence: 99%

“…Hence, a simplep rocedure for the fabrication of MSCSNs, ideally ao nepot synthesis, seems more attractive. [4,6,7,17,[22][23][24] Organic-inorganic hybrid mesoporous silica nanoparticles are au nique class of materials exploiting the combined functionalities of the organic and inorganic components and minimizinga ny intrinsic drawbacks of the individualc omponents. [26] Diverse sets of functional entities/structures are routinely implemented into core-shell frameworks to afford hybridmultifunctional nanoparticles with intriguing application potential(Ta ble1).…”

Section: Introductionmentioning

confidence: 99%

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Hierarchical Mesoporous Organosilica–Silica Core–Shell Nanoparticles Capable of Controlled Fungicide Release

Luo

Liang

Erichsen

et al. 2018

Chemistry A European J

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A new class of hierarchically structured mesoporous silica core-shell nanoparticles (HSMSCSNs) with a periodic mesoporous organosilica (PMO) core and a mesoporous silica (MS) shell is reported. The applied one-pot, two-step strategy allows rational control over the core/shell chemical composition, topology, and pore/particle size, simply by adjusting the reaction conditions in the presence of cetyltrimethylammonium bromide (CTAB) as structure-directing agent under basic conditions. The spherical, ethylene- or methylene-bridged PMO cores feature hexagonal (p6mm) or cage-like cubic symmetry (Pm3‾ n) depending on the organosilica precursor. The hexagonal MS shell was obtained by n-hexane-induced controlled hydrolysis of TEOS followed by directional co-assembly/condensation of silicate/CTAB composites at the PMO cores. The HSMSCSNs feature a hierarchical pore structure with pore diameters of about 2.7 and 5.6 nm in the core and shell domains, respectively. The core sizes and shell thicknesses are adjustable in the ranges of 90-275 and 15-50 nm, respectively, and the surface areas (max. 1300 m g ) and pore volumes (max. 1.83 cm g ) are among the highest reported for core-shell nanoparticles. The adsorption and controlled release of the fungicide propiconazole by the HSMSCSNs showed a three-stage release profile.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Hierarchical Mesoporous Organosilica–Silica Core–Shell Nanoparticles Capable of Controlled Fungicide Release

Luo

Liang

Erichsen

et al. 2018

Chemistry A European J

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“…130 Furthermore, they prepared core shell-structured MSNs with different pore sizes in the cores and shells by adding a swelling agent during either the core or shell formation step as shown in Figure 32. 344 Such coreshellstructured MSNs may be valuable for tuning the release rates of accommodated guest species and for keeping internal pores protected from being plugged by other species. In addition, Peng et al investigated the effect of the amount of trimethylbenzene on various parameters, such as hydrodynamic diameter and pore size, which will enable us to prepare colloidal MSNs with desired pore sizes and structures.…”

Section: Soft Template;mentioning

confidence: 99%

Colloidal Mesoporous Silica Nanoparticles

Yamamoto

Kuroda

2016

Bulletin of the Chemical Society of Japan

187

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IMMA. His current research interests include mesostructured materials, and several fields of inorganic materials chemistry. Some examples are intercalation chemistry, silicate chemistry, inorganic polymers, sol-gel chemistry, inorganic-organic hybrids, and self-organized materials. AbstractMesoporous silica nanoparticles (MSNs) with colloidal stability have attracted increasing interest because of their important properties, such as high transparency and cell uptake. Colloidal MSNs are comprehensively reviewed from the viewpoints of their preparation, characterization, and applications which include biomedical, catalytic, and optical materials. The following two points have been emphasized. The first point is that this review covers the widest range of introduction and discussion of the preparation and applications of both colloidal and noncolloidal MSNs. The second point is that this account contains a discussion from the viewpoints of both inorganic and colloid chemistries. After the introduction of the historical background of preparation of MSNs, preparative methods of colloidal MSNs and the major factors for the preparation of nanosized and colloidal MSNs are discussed. The methods to control the size, composition, morphology, and pore size of MSNs are also presented. Appropriate methods to obtain MSNs with high colloidal dispersibility are also discussed. Applications of colloidal MSNs are introduced with an emphasis on the colloidal stability. Issues to be addressed for further developments of colloidal MSNs are finally described.

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Uniform formation of mesoporous silica shell on micron-sized cores in the presence of hydrocarbon used as a swelling agent

Ishii

Nara

Hashimoto

et al. 2018

J Sol-Gel Sci Technol

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Preparation of core–shell mesoporous silica nanoparticles with bimodal pore structures by regrowth method

Cited by 19 publications

References 35 publications

Hierarchical Mesoporous Organosilica–Silica Core–Shell Nanoparticles Capable of Controlled Fungicide Release

Hierarchical Mesoporous Organosilica–Silica Core–Shell Nanoparticles Capable of Controlled Fungicide Release

Colloidal Mesoporous Silica Nanoparticles

Uniform formation of mesoporous silica shell on micron-sized cores in the presence of hydrocarbon used as a swelling agent

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