Textural stability of yttria-doped titania membranes

Yu-Ting Wong; Ning-Bew Wong; Li Shi

doi:10.1023/A:1022329309774

Textural stability of yttria-doped titania membranes

Yu-Ting Wong
, Ning-Bew Wong
, Li Shi

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

8 Citations (Scopus)

Abstract

The textural stability of yttria-doped titania membranes prepared by the sol-gel method was studied using thermal analysis, X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), and N₂ physisorption techniques. In the membrane fabrication process, the hydrolysis time and geometry of the substituent group in the metal alkoxide precursor directly affected the particle size of the sol. An improvement in thermal stability was achieved in the 3 mol% yttria-doped titania membranes resulting in the retardation of the anatase-to-rutile phase transformation in the doped samples. This technology has potential application in preventing membrane cracking at high temperatures. XRD results revealed that pure and yttria-doped titanias transformed to more than 90% of rutile at temperatures higher than 600 and 800°C, respectively. © 2003 Kluwer Academic Publishers.

Original language	English
Pages (from-to)	973-977
Journal	Journal of Materials Science
Volume	38
Issue number	5
DOIs	https://doi.org/10.1023/A:1022329309774
Publication status	Published - 1 Mar 2003

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

The authors gratefully acknowledge the City University of Hong Kong for financial support of this work.

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title = "Textural stability of yttria-doped titania membranes",

abstract = "The textural stability of yttria-doped titania membranes prepared by the sol-gel method was studied using thermal analysis, X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), and N2 physisorption techniques. In the membrane fabrication process, the hydrolysis time and geometry of the substituent group in the metal alkoxide precursor directly affected the particle size of the sol. An improvement in thermal stability was achieved in the 3 mol\% yttria-doped titania membranes resulting in the retardation of the anatase-to-rutile phase transformation in the doped samples. This technology has potential application in preventing membrane cracking at high temperatures. XRD results revealed that pure and yttria-doped titanias transformed to more than 90\% of rutile at temperatures higher than 600 and 800°C, respectively. {\textcopyright} 2003 Kluwer Academic Publishers.",

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AU - Wong, Ning-Bew

AU - Shi, Li

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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N2 - The textural stability of yttria-doped titania membranes prepared by the sol-gel method was studied using thermal analysis, X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), and N2 physisorption techniques. In the membrane fabrication process, the hydrolysis time and geometry of the substituent group in the metal alkoxide precursor directly affected the particle size of the sol. An improvement in thermal stability was achieved in the 3 mol% yttria-doped titania membranes resulting in the retardation of the anatase-to-rutile phase transformation in the doped samples. This technology has potential application in preventing membrane cracking at high temperatures. XRD results revealed that pure and yttria-doped titanias transformed to more than 90% of rutile at temperatures higher than 600 and 800°C, respectively. © 2003 Kluwer Academic Publishers.

AB - The textural stability of yttria-doped titania membranes prepared by the sol-gel method was studied using thermal analysis, X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), and N2 physisorption techniques. In the membrane fabrication process, the hydrolysis time and geometry of the substituent group in the metal alkoxide precursor directly affected the particle size of the sol. An improvement in thermal stability was achieved in the 3 mol% yttria-doped titania membranes resulting in the retardation of the anatase-to-rutile phase transformation in the doped samples. This technology has potential application in preventing membrane cracking at high temperatures. XRD results revealed that pure and yttria-doped titanias transformed to more than 90% of rutile at temperatures higher than 600 and 800°C, respectively. © 2003 Kluwer Academic Publishers.

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DO - 10.1023/A:1022329309774

M3 - RGC 21 - Publication in refereed journal

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SP - 973

EP - 977

JO - Journal of Materials Science

JF - Journal of Materials Science

IS - 5

ER -

Textural stability of yttria-doped titania membranes

Abstract

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