Microwave-assisted sol-gel process for production of spherical mesoporous silica materials

Miki Inada; Akira Nishinosono; Kai Kamada; Naoya Enomoto; Junichi Hojo

doi:10.1007/s10853-007-2022-y

Microwave-assisted sol-gel process for production of spherical mesoporous silica materials

Miki Inada, Akira Nishinosono, Kai Kamada, Naoya Enomoto, Junichi Hojo

Center of Advanced Instrumental Analysis

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

Spherical mesoporous SiO₂ and SiO₂-TiO₂ particles were synthesized by sol-gel method using W/O emulsion under microwave irradiation. In SiO₂ system, W/O emulsion was prepared by mixing partially hydrolyzed Si(OC₂H₅)₄ aqueous solution including C₁₈TAC as template with n-hexane solution including polyglycerol polyricinalate as emulsifier. In SiO₂-TiO ₂ system, Ti(OC₂H₅)₄ capped by acetylacetone was added to the aqueous phase. In both cases, spherical products were synthesized by heating of W/O emulsion for 30 min under microwave irradiation. The specific surface area and pore size of spherical products were 800 m²/g and 1.6 nm, respectively, which indicates that the spherical products are mesoporous. These results suggest that sol-gel reaction in water phase proceeds rapidly because microwave quickly and selectively heats up the aqueous solution.

Original language	English
Pages (from-to)	2362-2366
Number of pages	5
Journal	Journal of Materials Science
Volume	43
Issue number	7
DOIs	https://doi.org/10.1007/s10853-007-2022-y
Publication status	Published - Apr 2008

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1007/s10853-007-2022-y

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title = "Microwave-assisted sol-gel process for production of spherical mesoporous silica materials",

abstract = "Spherical mesoporous SiO2 and SiO2-TiO2 particles were synthesized by sol-gel method using W/O emulsion under microwave irradiation. In SiO2 system, W/O emulsion was prepared by mixing partially hydrolyzed Si(OC2H5)4 aqueous solution including C18TAC as template with n-hexane solution including polyglycerol polyricinalate as emulsifier. In SiO2-TiO 2 system, Ti(OC2H5)4 capped by acetylacetone was added to the aqueous phase. In both cases, spherical products were synthesized by heating of W/O emulsion for 30 min under microwave irradiation. The specific surface area and pore size of spherical products were 800 m2/g and 1.6 nm, respectively, which indicates that the spherical products are mesoporous. These results suggest that sol-gel reaction in water phase proceeds rapidly because microwave quickly and selectively heats up the aqueous solution.",

author = "Miki Inada and Akira Nishinosono and Kai Kamada and Naoya Enomoto and Junichi Hojo",

year = "2008",

month = apr,

doi = "10.1007/s10853-007-2022-y",

language = "English",

volume = "43",

pages = "2362--2366",

journal = "Journal of Materials Science",

issn = "0022-2461",

publisher = "Springer Netherlands",

number = "7",

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T1 - Microwave-assisted sol-gel process for production of spherical mesoporous silica materials

AU - Inada, Miki

AU - Nishinosono, Akira

AU - Kamada, Kai

AU - Enomoto, Naoya

AU - Hojo, Junichi

PY - 2008/4

Y1 - 2008/4

N2 - Spherical mesoporous SiO2 and SiO2-TiO2 particles were synthesized by sol-gel method using W/O emulsion under microwave irradiation. In SiO2 system, W/O emulsion was prepared by mixing partially hydrolyzed Si(OC2H5)4 aqueous solution including C18TAC as template with n-hexane solution including polyglycerol polyricinalate as emulsifier. In SiO2-TiO 2 system, Ti(OC2H5)4 capped by acetylacetone was added to the aqueous phase. In both cases, spherical products were synthesized by heating of W/O emulsion for 30 min under microwave irradiation. The specific surface area and pore size of spherical products were 800 m2/g and 1.6 nm, respectively, which indicates that the spherical products are mesoporous. These results suggest that sol-gel reaction in water phase proceeds rapidly because microwave quickly and selectively heats up the aqueous solution.

AB - Spherical mesoporous SiO2 and SiO2-TiO2 particles were synthesized by sol-gel method using W/O emulsion under microwave irradiation. In SiO2 system, W/O emulsion was prepared by mixing partially hydrolyzed Si(OC2H5)4 aqueous solution including C18TAC as template with n-hexane solution including polyglycerol polyricinalate as emulsifier. In SiO2-TiO 2 system, Ti(OC2H5)4 capped by acetylacetone was added to the aqueous phase. In both cases, spherical products were synthesized by heating of W/O emulsion for 30 min under microwave irradiation. The specific surface area and pore size of spherical products were 800 m2/g and 1.6 nm, respectively, which indicates that the spherical products are mesoporous. These results suggest that sol-gel reaction in water phase proceeds rapidly because microwave quickly and selectively heats up the aqueous solution.

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JO - Journal of Materials Science

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ER -

Microwave-assisted sol-gel process for production of spherical mesoporous silica materials

Abstract

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