Synthesis of visible-light-active nanosize rutile titania photocatalyst by low temperature dissolution-reprecipitation process

Shu Yin; Hitoshi Hasegawa; Daisaku Maeda; Masayuki Ishitsuka; Tsugio Sato

doi:10.1016/S1010-6030(03)00289-2

Synthesis of visible-light-active nanosize rutile titania photocatalyst by low temperature dissolution-reprecipitation process

Shu Yin, Hitoshi Hasegawa, Daisaku Maeda, Masayuki Ishitsuka, Tsugio Sato

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

171 Citations (Scopus)

Abstract

Titania nanocrystals were prepared by a "low temperature dissolution-reprecipitation process" (LTDRP) in liquid media. The crystallization of amorphous precursor could proceed at low temperature around room temperature, which was much lower than those of conventional calcination and hydrothermal reactions. The thermodynamically stable rutile formed at low temperature below 70 °C, while the metastable anatase formed at higher temperature. The phase composition, microstructure, morphology, and specific surface area of titania changed significantly depending on the reprecipitation temperatures. Needle-like rutile titania and spherical anatase titania crystals with high specific surface areas were prepared. Well-crystallized needle-like nanosize rutile crystals possessed higher photocatalytic activities than those of anatase crystals under visible light irradiation of wavelength >400 and/or >510 nm.

Original language	English
Pages (from-to)	1-8
Number of pages	8
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	163
Issue number	1-2
DOIs	https://doi.org/10.1016/S1010-6030(03)00289-2
Publication status	Published - 2004 Apr 15

Keywords

Hydrogen evolution
Low temperature dissolution-reprecipitation process
Nanosize rutile titania
Nitrogen monoxide destruction
Visible-light-active photocatalyst

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Physics and Astronomy(all)

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Synthesis of visible-light-active nanosize rutile titania photocatalyst by low temperature dissolution-reprecipitation process. / Yin, Shu; Hasegawa, Hitoshi; Maeda, Daisaku; Ishitsuka, Masayuki; Sato, Tsugio.

In: Journal of Photochemistry and Photobiology A: Chemistry, Vol. 163, No. 1-2, 15.04.2004, p. 1-8.

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

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title = "Synthesis of visible-light-active nanosize rutile titania photocatalyst by low temperature dissolution-reprecipitation process",

abstract = "Titania nanocrystals were prepared by a {"}low temperature dissolution-reprecipitation process{"} (LTDRP) in liquid media. The crystallization of amorphous precursor could proceed at low temperature around room temperature, which was much lower than those of conventional calcination and hydrothermal reactions. The thermodynamically stable rutile formed at low temperature below 70 °C, while the metastable anatase formed at higher temperature. The phase composition, microstructure, morphology, and specific surface area of titania changed significantly depending on the reprecipitation temperatures. Needle-like rutile titania and spherical anatase titania crystals with high specific surface areas were prepared. Well-crystallized needle-like nanosize rutile crystals possessed higher photocatalytic activities than those of anatase crystals under visible light irradiation of wavelength >400 and/or >510 nm.",

keywords = "Hydrogen evolution, Low temperature dissolution-reprecipitation process, Nanosize rutile titania, Nitrogen monoxide destruction, Visible-light-active photocatalyst",

author = "Shu Yin and Hitoshi Hasegawa and Daisaku Maeda and Masayuki Ishitsuka and Tsugio Sato",

note = "Funding Information: This work was partly supported by a grant in aid for Scientific Research, No. 14750660, from the Ministry of Education, Science and Culture.",

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AU - Yin, Shu

AU - Hasegawa, Hitoshi

AU - Maeda, Daisaku

AU - Ishitsuka, Masayuki

AU - Sato, Tsugio

N1 - Funding Information: This work was partly supported by a grant in aid for Scientific Research, No. 14750660, from the Ministry of Education, Science and Culture.

PY - 2004/4/15

Y1 - 2004/4/15

N2 - Titania nanocrystals were prepared by a "low temperature dissolution-reprecipitation process" (LTDRP) in liquid media. The crystallization of amorphous precursor could proceed at low temperature around room temperature, which was much lower than those of conventional calcination and hydrothermal reactions. The thermodynamically stable rutile formed at low temperature below 70 °C, while the metastable anatase formed at higher temperature. The phase composition, microstructure, morphology, and specific surface area of titania changed significantly depending on the reprecipitation temperatures. Needle-like rutile titania and spherical anatase titania crystals with high specific surface areas were prepared. Well-crystallized needle-like nanosize rutile crystals possessed higher photocatalytic activities than those of anatase crystals under visible light irradiation of wavelength >400 and/or >510 nm.

AB - Titania nanocrystals were prepared by a "low temperature dissolution-reprecipitation process" (LTDRP) in liquid media. The crystallization of amorphous precursor could proceed at low temperature around room temperature, which was much lower than those of conventional calcination and hydrothermal reactions. The thermodynamically stable rutile formed at low temperature below 70 °C, while the metastable anatase formed at higher temperature. The phase composition, microstructure, morphology, and specific surface area of titania changed significantly depending on the reprecipitation temperatures. Needle-like rutile titania and spherical anatase titania crystals with high specific surface areas were prepared. Well-crystallized needle-like nanosize rutile crystals possessed higher photocatalytic activities than those of anatase crystals under visible light irradiation of wavelength >400 and/or >510 nm.

KW - Hydrogen evolution

KW - Low temperature dissolution-reprecipitation process

KW - Nanosize rutile titania

KW - Nitrogen monoxide destruction

KW - Visible-light-active photocatalyst

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Synthesis of visible-light-active nanosize rutile titania photocatalyst by low temperature dissolution-reprecipitation process

Abstract

Keywords

ASJC Scopus subject areas

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