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Correlation between Mechanical Strength of Amorphous TiO2 Nanotubes and Their Solid State Crystallization Pathways

Gao, Zhonghui and Hao, Zhangxiang and Yi, Min and Huang, Ying and Xu, Yiming and Zhao, Ying and Li, Zhaoyang and Zhu, Shengli and Xu, Bai-Xiang and Liu, Porun and Wang, Feng Ryan and Huang, Yunhui and Zhao, Huijun and Yang, Xianjin :
Correlation between Mechanical Strength of Amorphous TiO2 Nanotubes and Their Solid State Crystallization Pathways.
In: Chemistry Select, 3 (38) pp. 10711-10716.
[Article] , (2018)

Abstract

Developing TiO2 crystals with specific morphologies and nanostructured architectures is highly desirable in energy storage, conversion and catalysis applications. Thermally activated amorphous‐to‐crystal transition provides effective growth of poly or monocrystalline TiO2, while an in‐depth understanding of different crystallization pathways at the solid state is still lacking. Herein, we report a close correlation between mechanical strength of the TiO2 precursors and their different crystallization pathways. Two different morphologies, i. e., well‐defined anatase TiO2 single nanocrystals and anatase polycrystalline nanotubes are obtained via rapid heating of two amorphous TiO2 precursors with distinctive mechanical strengths. The mechanical‐strength‐dependent crystallization from amorphous solid‐state precursors provides additional control on the crystallization pathway and thus the desirable properties of the resultant nanostructures. In this study, the well‐defined anatase nanocrystals with controlled morphology show higher storage capacity of sodium ion than that of polycrystalline ones in sodium ion batteries.

Item Type: Article
Erschienen: 2018
Creators: Gao, Zhonghui and Hao, Zhangxiang and Yi, Min and Huang, Ying and Xu, Yiming and Zhao, Ying and Li, Zhaoyang and Zhu, Shengli and Xu, Bai-Xiang and Liu, Porun and Wang, Feng Ryan and Huang, Yunhui and Zhao, Huijun and Yang, Xianjin
Title: Correlation between Mechanical Strength of Amorphous TiO2 Nanotubes and Their Solid State Crystallization Pathways
Language: English
Abstract:

Developing TiO2 crystals with specific morphologies and nanostructured architectures is highly desirable in energy storage, conversion and catalysis applications. Thermally activated amorphous‐to‐crystal transition provides effective growth of poly or monocrystalline TiO2, while an in‐depth understanding of different crystallization pathways at the solid state is still lacking. Herein, we report a close correlation between mechanical strength of the TiO2 precursors and their different crystallization pathways. Two different morphologies, i. e., well‐defined anatase TiO2 single nanocrystals and anatase polycrystalline nanotubes are obtained via rapid heating of two amorphous TiO2 precursors with distinctive mechanical strengths. The mechanical‐strength‐dependent crystallization from amorphous solid‐state precursors provides additional control on the crystallization pathway and thus the desirable properties of the resultant nanostructures. In this study, the well‐defined anatase nanocrystals with controlled morphology show higher storage capacity of sodium ion than that of polycrystalline ones in sodium ion batteries.

Journal or Publication Title: Chemistry Select
Volume: 3
Number: 38
Publisher: Wiley
Uncontrolled Keywords: Mechanical strength, Na-ion battery, Nanoindentation, TiO2 nanotubes
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Mechanics of functional Materials
Date Deposited: 26 Nov 2018 06:07
DOI: 10.1002/slct.201802588
Funders: This work was financially supported by the China Postdoctoral Fund (0500229044), National Natural Science Foundation of China (51771131), the EPSRC First Grant project (EP/P02467X/1) and Royal Society research grant (RG160661).
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