Shape-controlled synthesis of Ni(OH)2/NiO nanowalls by surface reaction of Ni foil in aqueous NH4OH

Vu Xuan Hien; Dang Duc Vuong; Nguyen Duc Chien; Young Woo Heo

doi:10.1016/j.matchemphys.2018.06.054

Shape-controlled synthesis of Ni(OH)₂/NiO nanowalls by surface reaction of Ni foil in aqueous NH₄OH

Vu Xuan Hien, Dang Duc Vuong, Nguyen Duc Chien, Young Woo Heo

Hanoi University of Science and Technology

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

4 Scopus citations

Abstract

The nanoscale structures of nickel hydroxide and oxide materials attract considerable interest because of their potential application in several fields. This study introduces a facile method to synthesize Ni(OH)₂ nanowalls directly on a Ni foil by chemical treatment with an NH₄OH solution. The dimensions and shape of the Ni(OH)₂ nanowalls can be easily controlled by changing the temperature (50–90 °C), volume of the NH₄OH solution (25–50 ml), and treatment time (24–144 h). After annealing for 1 h at temperatures below 600 °C, the as-synthesized Ni(OH)₂ nanowalls transformed into the corresponding NiO nanostructures, without changes in morphology. The formation of the nanowalls and the influence of the temperature on the morphology of the formed nanostructures were analyzed in terms of the growth mechanism.

Original language	English
Pages (from-to)	74-81
Number of pages	8
Journal	Materials Chemistry and Physics
Volume	217
DOIs	https://doi.org/10.1016/j.matchemphys.2018.06.054
State	Published - 15 Sep 2018

Keywords

Nanowalls
Nickel foil
Nickel hydroxide
Nickel oxide
Surface treatment

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10.1016/j.matchemphys.2018.06.054

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title = "Shape-controlled synthesis of Ni(OH)2/NiO nanowalls by surface reaction of Ni foil in aqueous NH4OH",

abstract = "The nanoscale structures of nickel hydroxide and oxide materials attract considerable interest because of their potential application in several fields. This study introduces a facile method to synthesize Ni(OH)2 nanowalls directly on a Ni foil by chemical treatment with an NH4OH solution. The dimensions and shape of the Ni(OH)2 nanowalls can be easily controlled by changing the temperature (50–90 °C), volume of the NH4OH solution (25–50 ml), and treatment time (24–144 h). After annealing for 1 h at temperatures below 600 °C, the as-synthesized Ni(OH)2 nanowalls transformed into the corresponding NiO nanostructures, without changes in morphology. The formation of the nanowalls and the influence of the temperature on the morphology of the formed nanostructures were analyzed in terms of the growth mechanism.",

keywords = "Nanowalls, Nickel foil, Nickel hydroxide, Nickel oxide, Surface treatment",

author = "Hien, {Vu Xuan} and Vuong, {Dang Duc} and Chien, {Nguyen Duc} and Heo, {Young Woo}",

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doi = "10.1016/j.matchemphys.2018.06.054",

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T1 - Shape-controlled synthesis of Ni(OH)2/NiO nanowalls by surface reaction of Ni foil in aqueous NH4OH

AU - Hien, Vu Xuan

AU - Vuong, Dang Duc

AU - Chien, Nguyen Duc

AU - Heo, Young Woo

PY - 2018/9/15

Y1 - 2018/9/15

N2 - The nanoscale structures of nickel hydroxide and oxide materials attract considerable interest because of their potential application in several fields. This study introduces a facile method to synthesize Ni(OH)2 nanowalls directly on a Ni foil by chemical treatment with an NH4OH solution. The dimensions and shape of the Ni(OH)2 nanowalls can be easily controlled by changing the temperature (50–90 °C), volume of the NH4OH solution (25–50 ml), and treatment time (24–144 h). After annealing for 1 h at temperatures below 600 °C, the as-synthesized Ni(OH)2 nanowalls transformed into the corresponding NiO nanostructures, without changes in morphology. The formation of the nanowalls and the influence of the temperature on the morphology of the formed nanostructures were analyzed in terms of the growth mechanism.

AB - The nanoscale structures of nickel hydroxide and oxide materials attract considerable interest because of their potential application in several fields. This study introduces a facile method to synthesize Ni(OH)2 nanowalls directly on a Ni foil by chemical treatment with an NH4OH solution. The dimensions and shape of the Ni(OH)2 nanowalls can be easily controlled by changing the temperature (50–90 °C), volume of the NH4OH solution (25–50 ml), and treatment time (24–144 h). After annealing for 1 h at temperatures below 600 °C, the as-synthesized Ni(OH)2 nanowalls transformed into the corresponding NiO nanostructures, without changes in morphology. The formation of the nanowalls and the influence of the temperature on the morphology of the formed nanostructures were analyzed in terms of the growth mechanism.

KW - Nanowalls

KW - Nickel foil

KW - Nickel hydroxide

KW - Nickel oxide

KW - Surface treatment

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U2 - 10.1016/j.matchemphys.2018.06.054

DO - 10.1016/j.matchemphys.2018.06.054

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SP - 74

EP - 81

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

ER -

Shape-controlled synthesis of Ni(OH)₂/NiO nanowalls by surface reaction of Ni foil in aqueous NH₄OH

Abstract

Keywords

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