Morphological control of vertically self-aligned nanosheets formed on magnesium alloy by surfactant-free hydrothermal synthesis

Takahiro Ishizaki; Sung Pyo Cho; Naobumi Saito

doi:10.1039/b907490b

Morphological control of vertically self-aligned nanosheets formed on magnesium alloy by surfactant-free hydrothermal synthesis

Takahiro Ishizaki, Sung Pyo Cho, Naobumi Saito

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

20 Citations (Scopus)

Abstract

Crystalline nanosheets were successfully formed on magnesium alloy AZ31 by a facile surfactant-free hydrothermal treatment using aqueous solution. The crystal structures and shapes of the nanosheets changed with the treatment temperature. On treatment at 120 °C, rosette-like structures made from curved nanosheets of crystalline Mg_1-xAl_x(OH) ₂(NO₃)_x·nH₂O were formed. At 150 °C, plate-like nanosheets of crystalline Mg_1-xAl _x(OH)₂(NO₃)_x·nH₂O and Mg(OH)₂ were formed. Further increase in the treatment temperature to 180 °C yielded larger crystals with sharp edges. The crystallites were crystalline Mg(OH)₂ with a distinct plate-like shape with the edges preferentially directed out of the magnesium alloy. The formation mechanism of this morphology is also discussed.

Original language	English
Pages (from-to)	2338-2343
Number of pages	6
Journal	CrystEngComm
Volume	11
Issue number	11
DOIs	https://doi.org/10.1039/b907490b
Publication status	Published - 2009
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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abstract = "Crystalline nanosheets were successfully formed on magnesium alloy AZ31 by a facile surfactant-free hydrothermal treatment using aqueous solution. The crystal structures and shapes of the nanosheets changed with the treatment temperature. On treatment at 120 °C, rosette-like structures made from curved nanosheets of crystalline Mg1-xAlx(OH) 2(NO3)x·nH2O were formed. At 150 °C, plate-like nanosheets of crystalline Mg1-xAl x(OH)2(NO3)x·nH2O and Mg(OH)2 were formed. Further increase in the treatment temperature to 180 °C yielded larger crystals with sharp edges. The crystallites were crystalline Mg(OH)2 with a distinct plate-like shape with the edges preferentially directed out of the magnesium alloy. The formation mechanism of this morphology is also discussed.",

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AB - Crystalline nanosheets were successfully formed on magnesium alloy AZ31 by a facile surfactant-free hydrothermal treatment using aqueous solution. The crystal structures and shapes of the nanosheets changed with the treatment temperature. On treatment at 120 °C, rosette-like structures made from curved nanosheets of crystalline Mg1-xAlx(OH) 2(NO3)x·nH2O were formed. At 150 °C, plate-like nanosheets of crystalline Mg1-xAl x(OH)2(NO3)x·nH2O and Mg(OH)2 were formed. Further increase in the treatment temperature to 180 °C yielded larger crystals with sharp edges. The crystallites were crystalline Mg(OH)2 with a distinct plate-like shape with the edges preferentially directed out of the magnesium alloy. The formation mechanism of this morphology is also discussed.

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Morphological control of vertically self-aligned nanosheets formed on magnesium alloy by surfactant-free hydrothermal synthesis

Abstract

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