Preparation of large monodispersed spherical silica particles using seed particle growth

Chang, Sang‐Mok; Lee, Minhyung; Kim, Woo‐Sik

doi:10.1016/j.jcis.2005.01.059

Cited by 102 publications

(52 citation statements)

References 11 publications

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“…Although diverse studies on the Stöber method have been made, the size control of spherical particles with uniformity in size is still attracting much attention because diversification of the size broadens the realm of potential applications. In a large number of studies on the size control [2][3][4], the development of ''seed regrowth" technique is an outstanding achievement [5,6]. The seed regrowth technique is based on the further growth of pre-formed silica particles as a seed by adding the silica precursor (e.g., TEOS) with suppressing new particle formation.…”

Section: Introductionmentioning

confidence: 99%

Extension of size of monodisperse silica nanospheres and their well-ordered assembly

Watanabe

Yokoi

Kobayashi

et al. 2011

Journal of Colloid and Interface Science

125

100

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Section: Introductionmentioning

confidence: 99%

Extension of size of monodisperse silica nanospheres and their well-ordered assembly

Watanabe

Yokoi

Kobayashi

et al. 2011

Journal of Colloid and Interface Science

125

100

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“…The silica microspheres with 100 nm diameter were synthesized by hydrolysis and condensation of tetraethyl orthosilicate (TEOS) in an alcohol medium and in the presence of water and ammonia through the particle growth method [10,11]. In a typical opal assembling process, a suspension of silica microspheres was put into a beaker at 50°C and 90% relative humidity.…”

Section: Methodsmentioning

confidence: 99%

Preparation and evaluation of a well-ordered mesoporous nickel-molybdenum/silica opal hydrodesulfurization model catalyst

Zheng

Chen

Hua

et al. 2011

Transition Met Chem

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A silica-supported hydrodesulfurization (HDS) model catalyst with well-ordered pore structure was prepared by depositing Ni and Mo on the surface of silica opal. Using the voids of ordered packing of monodisperse silica microspheres, the pores of the model catalyst are wholly open-through and uniformly distributed. The ordered pore structure and regular smooth surface of the model catalyst make the surface states of metal oxides readily observable. As a result, the metal oxides were well dispersed on the silica, and the model catalyst exhibited a high activity in HDS of dibenzothiophene.

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“…Segundo Chang et al [25] , as partículas de sílica começam a aumentar de tamanho quando a concentração de TEOS no sistema alcança o nível saturado (C S ). Entretanto, se a concentração de TEOS ultrapassar um valor limite de saturação (C S *) ocorrem novas nucleações, comprometendo a monodispersão das partículas.…”

Section: O Processo Sol-gelunclassified

Suportes cromatográficos e fases estacionárias para cromatografia líquida: preparo, evolução e tendências

Nazário¹,

Lanças²

2013

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ResumoDesde o surgimento da instrumentação dedicada à HPLC, essa técnica analítica tem se destacado na separação e análise de uma grande variedade de compostos em diferentes campos de atuação. Nesse contexto, a área de pesquisa e desenvolvimento (P&D) de suportes cromatográficos e de fases estacionárias para HPLC tem recebido atenção de pesquisadores, objetivando análises rápidas, colunas eficientes e seletividade adequada. Neste trabalho discutem-se os métodos utilizados no preparo de suportes cromatográficos para HPLC (principalmente os baseados em sílica) e as estratégias de modificação de sua superfície no preparo de fases estacionárias. Palavras-chaveHPLC; suporte cromatográfico; sílica; fase estacionária.Chromatographic supports and stationary phases for liquid chromatography: preparation, evolution and trends AbstractSince the development of instrumentation for HPLC, this analytical technique has been widely employed in the separations and analysis of a large variety of compounds in different fields. In this context, research and development (R & D) area of chromatographic supports and stationary phases for HPLC have been receiving attention from researchers aiming the decrease in analysis time, increase column efficient and promote adequate selectivity. In this paper, we focused on the methods for the preparation of chromatographic supports for HPLC (especially silica-based materials) and strategies for modifying its surface in the preparation of stationary phases.

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Preparation of large monodispersed spherical silica particles using seed particle growth

Cited by 102 publications

References 11 publications

Extension of size of monodisperse silica nanospheres and their well-ordered assembly

Extension of size of monodisperse silica nanospheres and their well-ordered assembly

Preparation and evaluation of a well-ordered mesoporous nickel-molybdenum/silica opal hydrodesulfurization model catalyst

Suportes cromatográficos e fases estacionárias para cromatografia líquida: preparo, evolução e tendências

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