<abstract xmlns="http://www.w3.org/1999/xhtml">Different types of titanate one-dimensional nanostructured materials were synthesized and characterized using scanning and transmission electron microscopy, X-ray diffraction and Raman spectroscopy. The results presented in this work unquestionably showed dependence of morphology and structure of the titanate nanopowders on parameters of hydrothermal synthesis. It was found that nanotubes, nanowires and nanoribbons are three unavoidable kinetic products of hydrothermal reaction. Moreover, increasing temperature of reaction or hydrothermal treatment duration results in acceleration of nanotube-nanowire-nanoribbon transformation. However, the sequence of titanate morphology transformation is invariable. The detailed studies further revealed that the crystal structure of hydrothermally prepared nanotubes and nanowires are indistinguishable but the determination of the exact structure is practically impossible. Because of higher crystallinity, the structure of nanoribbons can be established. It was shown that it corresponds to the monoclinic layered trititanic acid H2Ti3O7 and is isostructural with sodium derivatives Na2_xHxTi3O7.nH20 (with x near 2).</abstract>

Different types of titanate one-dimensional nanostructured materials were synthesized and characterized using scanning and transmission electron microscopy, X-ray diffraction and Raman spectroscopy. The results presented in this work unquestionably showed dependence of morphology and structure of the titanate nanopowders on parameters of hydrothermal synthesis. It was found that nanotubes, nanowires and nanoribbons are three unavoidable kinetic products of hydrothermal reaction. Moreover, increasing temperature of reaction or hydrothermal treatment duration results in acceleration of nanotube-nanowire-nanoribbon transformation. However, the sequence of titanate morphology transformation is invariable. The detailed studies further revealed that the crystal structure of hydrothermally prepared nanotubes and nanowires are indistinguishable but the determination of the exact structure is practically impossible. Because of higher crystallinity, the structure of nanoribbons can be established. It was shown that it corresponds to the monoclinic layered trititanic acid H2Ti3O7 and is isostructural with sodium derivatives Na2_xHxTi3O7.nH20 (with x near 2).

Insights into the multistep transformation of titanate nanotubes into nanowires and nanoribbons

Wrocław University of Technology, Department of Mechanics, Materials Science and Engineering, Smoluchowskiego 25, 50-370 Wrocław,

Wrocław University of Technology, Faculty of Chemistry, Smoluchowskiego 23, 50-370 Wroclaw,

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Different types of titanate one-dimensional nanostructured materials were synthesized and characterized using scanning and transmission electron microscopy,...

Insights into the multistep transformation of titanate nanotubes into nanowires and nanoribbons

Publié en ligne: 17 nov. 2016

Pages: 691 - 702

Reçu: 20 août 2015

Accepté: 26 juil. 2016

DOI: https://doi.org/10.1515/msp-2016-0094

Mots clés
titanate nanotubes, nanoribbons, nanowires, hydrothermal synthesis, structure and morphology

© Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Insights into the multistep transformation of titanate nanotubes into nanowires and nanoribbons

Publié en ligne: 17 nov. 2016

Pages: 691 - 702

Reçu: 20 août 2015

Accepté: 26 juil. 2016

DOI: https://doi.org/10.1515/msp-2016-0094

Mots cléstitanate nanotubes, nanoribbons, nanowires, hydrothermal synthesis, structure and morphology

© Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
titanate nanotubes, nanoribbons, nanowires, hydrothermal synthesis, structure and morphology