Asymmetric anatase TiO2 nanocrystals with exposed high-index facets and their excellent lithium storage properties

Hao Bin Wu; Jun Song Chen; Xiong Wen Lou; Huey Hoon Hng

doi:10.1039/c1nr10854a

Asymmetric anatase TiO₂ nanocrystals with exposed high-index facets and their excellent lithium storage properties

Hao Bin Wu, Jun Song Chen, Xiong Wen Lou^*, Huey Hoon Hng

^*Corresponding author for this work

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

66 Citations (Scopus)

Abstract

In this work, we demonstrate a unique organic solvent system to synthesize asymmetric anatase TiO₂ nanocrystals with a bipyramidal structure, where the upper pyramid is bound by (201) facets, and the lower pyramid is bound by (401) surfaces. Due to the high surface energy of these (401) high-index facets, the nanocrystals tend to assemble on these facets to minimize the free energy, leading to the formation of a dandelion-like hierarchical structure.

Original language	English
Pages (from-to)	4082-4084
Number of pages	3
Journal	Nanoscale
Volume	3
Issue number	10
DOIs	https://doi.org/10.1039/c1nr10854a
Publication status	Published - Oct 2011
Externally published	Yes

ASJC Scopus Subject Areas

General Materials Science

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abstract = "In this work, we demonstrate a unique organic solvent system to synthesize asymmetric anatase TiO2 nanocrystals with a bipyramidal structure, where the upper pyramid is bound by (201) facets, and the lower pyramid is bound by (401) surfaces. Due to the high surface energy of these (401) high-index facets, the nanocrystals tend to assemble on these facets to minimize the free energy, leading to the formation of a dandelion-like hierarchical structure.",

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AU - Hng, Huey Hoon

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AB - In this work, we demonstrate a unique organic solvent system to synthesize asymmetric anatase TiO2 nanocrystals with a bipyramidal structure, where the upper pyramid is bound by (201) facets, and the lower pyramid is bound by (401) surfaces. Due to the high surface energy of these (401) high-index facets, the nanocrystals tend to assemble on these facets to minimize the free energy, leading to the formation of a dandelion-like hierarchical structure.

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Asymmetric anatase TiO₂ nanocrystals with exposed high-index facets and their excellent lithium storage properties

Abstract

ASJC Scopus Subject Areas

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