Anomalous phase transition of layered lepidocrocite titania nanosheets to anatase and rutile

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Anomalous phase transition of layered lepidocrocite titania nanosheets to anatase and rutile. / Rodriguez, Paramaconi; Pu, Yayun; Chen, Qianwen; Sun, Zongzhao; Huang, Limin .

In: Crystal Growth and Design, 23.04.2019.

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@article{736a97402a864254aaabb6d0247dc648,
title = "Anomalous phase transition of layered lepidocrocite titania nanosheets to anatase and rutile",
abstract = "In this study, phase transformations from lepidocrocite titania nanosheets (L-TiO2) to rutile (R-TiO2) and anatase (A-TiO2) have been systematically investigated as a function of the preparation conditions, such as pH and freeze drying, and as a function of the temperature treatment. We have found that the transformation of (L-TiO2) into rutile takes place upon freeze drying treatment. We report that temperature determined the final phase-structure in the transition phase of the L-TiO2 nanosheets into TiO2 nanoparticles, while the pH determined the final morphology and particle size. Based on the experimental results, two different transition pathways of dissolution-recrystallization and topologically rolling transition have been proposed. Our results give a full map of phase transition and morphology evolution of L-TiO2 to R-TiO2/A-TiO2 that can provide guideline to new materials design, especially for the photocatalysts.",
author = "Paramaconi Rodriguez and Yayun Pu and Qianwen Chen and Zongzhao Sun and Limin Huang",
year = "2019",
month = apr,
day = "23",
doi = "10.1021/acs.cgd.9b00147",
language = "English",
journal = "Crystal Growth and Design",
issn = "1528-7483",
publisher = "American Chemical Society",

}

RIS

TY - JOUR

T1 - Anomalous phase transition of layered lepidocrocite titania nanosheets to anatase and rutile

AU - Rodriguez, Paramaconi

AU - Pu, Yayun

AU - Chen, Qianwen

AU - Sun, Zongzhao

AU - Huang, Limin

PY - 2019/4/23

Y1 - 2019/4/23

N2 - In this study, phase transformations from lepidocrocite titania nanosheets (L-TiO2) to rutile (R-TiO2) and anatase (A-TiO2) have been systematically investigated as a function of the preparation conditions, such as pH and freeze drying, and as a function of the temperature treatment. We have found that the transformation of (L-TiO2) into rutile takes place upon freeze drying treatment. We report that temperature determined the final phase-structure in the transition phase of the L-TiO2 nanosheets into TiO2 nanoparticles, while the pH determined the final morphology and particle size. Based on the experimental results, two different transition pathways of dissolution-recrystallization and topologically rolling transition have been proposed. Our results give a full map of phase transition and morphology evolution of L-TiO2 to R-TiO2/A-TiO2 that can provide guideline to new materials design, especially for the photocatalysts.

AB - In this study, phase transformations from lepidocrocite titania nanosheets (L-TiO2) to rutile (R-TiO2) and anatase (A-TiO2) have been systematically investigated as a function of the preparation conditions, such as pH and freeze drying, and as a function of the temperature treatment. We have found that the transformation of (L-TiO2) into rutile takes place upon freeze drying treatment. We report that temperature determined the final phase-structure in the transition phase of the L-TiO2 nanosheets into TiO2 nanoparticles, while the pH determined the final morphology and particle size. Based on the experimental results, two different transition pathways of dissolution-recrystallization and topologically rolling transition have been proposed. Our results give a full map of phase transition and morphology evolution of L-TiO2 to R-TiO2/A-TiO2 that can provide guideline to new materials design, especially for the photocatalysts.

U2 - 10.1021/acs.cgd.9b00147

DO - 10.1021/acs.cgd.9b00147

M3 - Article

JO - Crystal Growth and Design

JF - Crystal Growth and Design

SN - 1528-7483

ER -