Synthesis of Mesoporous Silica Nanoparticles from a Low-concentration C<i>n</i>TMAX–Sodium Silicate Components

Lin, Hong Ping; Tsai, Chih Pin

doi:10.1246/cl.2003.1092

Cited by 70 publications

(46 citation statements)

References 8 publications

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“…The inset of Figure 2 100 nm can exhibit only one broad (100) peak because of its disorder. [12,15,16] The d 100 spacing of calcined and extracted HCMSNs contracted from 3.96 nm (as-synthesis) to 3.58 nm (after calcination) and 3.86 nm (after extraction) respectively (as shown in Table 1). The pore properties of these mesoporous silica nanoparticles were further analyzed by N 2 adsorption-desorption isotherms (Figure 3 b) and the surface area, pore volume, and BJH pore size distribution are tabulated in Table 1.…”

Section: Resultsmentioning

confidence: 98%

Uniform Mesoporous Silica Hexagon and Its Two‐Dimensional Colloidal Crystal

Lin¹,

Lu²,

Hung³

et al. 2009

ChemPhysChem

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Well-ordered mesoporous silica nanoparticles with uniform hexagonal disk shapes are synthesized under dilute alkaline conditions with a two-step process, separating the nucleation and growth process. The resulting monodisperse hexagons can be arranged in a 2-dimensional (2D) ordered periodical super-structure. The hexagonal symmetry is similar in both scales. A statistical mechanical cell model is applied to analyze consequences of the interesting packing structure, including osmotic bulk modulus, phase separation and defects.

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Section: Resultsmentioning

confidence: 98%

Uniform Mesoporous Silica Hexagon and Its Two‐Dimensional Colloidal Crystal

Lin¹,

Lu²,

Hung³

et al. 2009

ChemPhysChem

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“…[9] Even smaller particles down to 30 nm were reported by Lin and Tsai when a dilution of 1:2600 was used and the pH was reduced to 5.6. [10] Highly ordered single particles of 60-140 nm were obtained by Cai et al [11] in basic medium using dilutions of 1:1200. A versatile approach was introduced by Mann and co-workers [12] for the preparation of nanometersized mesoporous materials.…”

Section: Introductionmentioning

confidence: 99%

Colloidal Suspensions of Nanometer‐Sized Mesoporous Silica

Möller¹,

Kobler

Bein

2007

Adv Funct Materials

407

333

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Nanometer‐sized surfactant‐templated materials are prepared in the form of stable suspensions of colloidal mesoporous silica (CMS) consisting of discrete, nonaggregated particles with dimensions smaller than 200 nm. A high‐yield synthesis procedure is reported based on a cationic surfactant and low water content that additionally enables the adjustment of the size range of the individual particles between 50 and 100 nm. Particularly, the use of the base triethanolamine (TEA) and the specific reaction conditions result in long‐lived suspensions. Dynamic light scattering reveals narrow particle size distributions in these suspensions. Smooth spherical particles with pores growing from the center to the periphery are observed by using transmission electron microscopy, suggesting a seed‐growth mechanism. The template molecules could be extracted from the nanoscale mesoporous particles via sonication in acidic media. The resulting nanoparticles give rise to type IV adsorption isotherms revealing typical mesopores and additional textural porosity. High surface areas of over 1000 m2 g–1 and large pore volumes of up to 1 mL g–1 are obtained for these extracted samples.

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“…Most catalytic reactions that involve the diffusion of reaction species are greatly affected by the textural properties of the catalyst system. It has been claimed that the textural porosity, resulting from void spaces between primary particles, would favor the introduction of a reactant into the framework pores, leading to facile diffusion of reactant onto the active sites [49][50][51][52][53][54]. We successfully prepared mesoporous Ni-Alumina catalysts by a one-step sol-gel method [55] and controlled their textural properties by employing different hydrolysis methods [56].…”

Section: Mesoporous Ni-alumina Prepared By a One-step Sol-gel Methods mentioning

confidence: 99%

Preparation of nickel-mesoporous materials and their application to the hydrodechlorination of chlorinated organic compounds

Kim

Kang

et al. 2007

Catal Surv Asia

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Mesoporous materials have attracted considerable attention for use as a catalyst or a catalyst support due to their remarkable textural properties such as high surface area and large pore volume with a narrow pore size distribution. Many efforts have been made to design mesoporous materials for use in heterogeneous catalyst systems. Recent progress and results regarding the preparation of nickel-mesoporous materials and their application to the hydrodechlorination of chlorinated organic compounds were discussed in this review. Mesoporous materials were used as a support for nickel catalyst or a nickel-incorporated mesoporous catalytic material in this work. Two research areas were described and discussed in this review. One is the preparation of mesoporous alumina-supported nickel catalysts and their application to the hydrodechlorination of 1,2-dichloropropane and o-dichlorobenzene. The other is the preparation of mesoporous silica-supported nickel catalysts and their application to the hydrodechlorination of 1,1,2-trichloroethane and chlorobenzene.

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Synthesis of Mesoporous Silica Nanoparticles from a Low-concentration CnTMAX–Sodium Silicate Components

Abstract: The 30–100 nm primary particles of mesoporous silica have been conveniently synthesized from a highly dilute aqueous solution of CnTAMX–sodium silicate.

Cited by 70 publications

References 8 publications

Uniform Mesoporous Silica Hexagon and Its Two‐Dimensional Colloidal Crystal

Uniform Mesoporous Silica Hexagon and Its Two‐Dimensional Colloidal Crystal

Colloidal Suspensions of Nanometer‐Sized Mesoporous Silica

Preparation of nickel-mesoporous materials and their application to the hydrodechlorination of chlorinated organic compounds

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