New hierarchically porous titania monoliths for chromatographic separation media

George Hasegawa; Kei Morisato; Kazuyoshi Kanamori; Kazuki Nakanishi

doi:10.1002/jssc.201100538

New hierarchically porous titania monoliths for chromatographic separation media

George Hasegawa, Kei Morisato, Kazuyoshi Kanamori, Kazuki Nakanishi

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

30 Citations (Scopus)

Abstract

Separation media based on hierarchically porous titania (TiO₂) monoliths for highperformance liquid chromatography (HPLC) have been successfully fabricated by the sol-gel process of titanium alkoxide in a mild condition utilizing a chelating agent and mineral salt. The as-gelled TiO ₂ monoliths were subjected to a simple solvent exchange process from ethanol (EtOH) to H₂O followed by drying and calcination. The resultant monolithic TiO₂ columns consist of anatase crystallites with the typical specific surface area of more than 200m²/g. The resultant monolithic TiO₂ column calcined at 200 and 400°C exhibited a good separation performance for organophosphates as well as for polar benzene derivatives in the normal-phase mode.

Original language	English
Pages (from-to)	3004-3010
Number of pages	7
Journal	Journal of Separation Science
Volume	34
Issue number	21
DOIs	https://doi.org/10.1002/jssc.201100538
Publication status	Published - Nov 2011
Externally published	Yes

All Science Journal Classification (ASJC) codes

Analytical Chemistry
Filtration and Separation

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10.1002/jssc.201100538

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abstract = "Separation media based on hierarchically porous titania (TiO2) monoliths for highperformance liquid chromatography (HPLC) have been successfully fabricated by the sol-gel process of titanium alkoxide in a mild condition utilizing a chelating agent and mineral salt. The as-gelled TiO 2 monoliths were subjected to a simple solvent exchange process from ethanol (EtOH) to H2O followed by drying and calcination. The resultant monolithic TiO2 columns consist of anatase crystallites with the typical specific surface area of more than 200m2/g. The resultant monolithic TiO2 column calcined at 200 and 400°C exhibited a good separation performance for organophosphates as well as for polar benzene derivatives in the normal-phase mode.",

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AU - Morisato, Kei

AU - Kanamori, Kazuyoshi

AU - Nakanishi, Kazuki

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AB - Separation media based on hierarchically porous titania (TiO2) monoliths for highperformance liquid chromatography (HPLC) have been successfully fabricated by the sol-gel process of titanium alkoxide in a mild condition utilizing a chelating agent and mineral salt. The as-gelled TiO 2 monoliths were subjected to a simple solvent exchange process from ethanol (EtOH) to H2O followed by drying and calcination. The resultant monolithic TiO2 columns consist of anatase crystallites with the typical specific surface area of more than 200m2/g. The resultant monolithic TiO2 column calcined at 200 and 400°C exhibited a good separation performance for organophosphates as well as for polar benzene derivatives in the normal-phase mode.

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New hierarchically porous titania monoliths for chromatographic separation media

Abstract

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