Structural evolution of NiAl-based layered nanostructures grown by a low-temperature hydrothermal method

Chan Woo Jeon; Sang Seok Lee; Il Kyu Park

doi:10.1016/j.apsusc.2018.12.126

Structural evolution of NiAl-based layered nanostructures grown by a low-temperature hydrothermal method

Chan Woo Jeon, Sang Seok Lee, Il Kyu Park

Dept. of Materials Science & Engineering

Seoul National University of Science and Technology (SNUST)

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

19 Scopus citations

Abstract

We report on the growth mechanism of NiAl-based layered nanostructures on rigid substrates using a low-temperature hydrothermal method. NiAl-layered double hydroxide (LDH) structures were grown with various source concentrations and growth times. Structural and optical investigations showed that uniform NiAl-LDHs were grown on the substrates because Al(OH) ₃ was sufficiently supplied from the aluminum thin film seed layer when the Ni source concentration was low and in the initial stage of the growth. However, a bilayer of NiAl-LDH and α-Ni(OH) ₂ was formed when the Ni sources were sufficiently supplied and the growth time was long enough because of the deficient Al(OH) ₃ sources at the growth front.

Original language	English
Pages (from-to)	65-69
Number of pages	5
Journal	Applied Surface Science
Volume	473
DOIs	https://doi.org/10.1016/j.apsusc.2018.12.126
State	Published - 15 Apr 2019

Keywords

Glancing X-ray diffraction
Growth mechanism
Hydrothermal
NiAl-layered double hydroxide
UV–Vis spectroscopy

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10.1016/j.apsusc.2018.12.126

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title = "Structural evolution of NiAl-based layered nanostructures grown by a low-temperature hydrothermal method",

abstract = " We report on the growth mechanism of NiAl-based layered nanostructures on rigid substrates using a low-temperature hydrothermal method. NiAl-layered double hydroxide (LDH) structures were grown with various source concentrations and growth times. Structural and optical investigations showed that uniform NiAl-LDHs were grown on the substrates because Al(OH) 3 was sufficiently supplied from the aluminum thin film seed layer when the Ni source concentration was low and in the initial stage of the growth. However, a bilayer of NiAl-LDH and α-Ni(OH) 2 was formed when the Ni sources were sufficiently supplied and the growth time was long enough because of the deficient Al(OH) 3 sources at the growth front.",

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AU - Lee, Sang Seok

AU - Park, Il Kyu

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Y1 - 2019/4/15

N2 - We report on the growth mechanism of NiAl-based layered nanostructures on rigid substrates using a low-temperature hydrothermal method. NiAl-layered double hydroxide (LDH) structures were grown with various source concentrations and growth times. Structural and optical investigations showed that uniform NiAl-LDHs were grown on the substrates because Al(OH) 3 was sufficiently supplied from the aluminum thin film seed layer when the Ni source concentration was low and in the initial stage of the growth. However, a bilayer of NiAl-LDH and α-Ni(OH) 2 was formed when the Ni sources were sufficiently supplied and the growth time was long enough because of the deficient Al(OH) 3 sources at the growth front.

AB - We report on the growth mechanism of NiAl-based layered nanostructures on rigid substrates using a low-temperature hydrothermal method. NiAl-layered double hydroxide (LDH) structures were grown with various source concentrations and growth times. Structural and optical investigations showed that uniform NiAl-LDHs were grown on the substrates because Al(OH) 3 was sufficiently supplied from the aluminum thin film seed layer when the Ni source concentration was low and in the initial stage of the growth. However, a bilayer of NiAl-LDH and α-Ni(OH) 2 was formed when the Ni sources were sufficiently supplied and the growth time was long enough because of the deficient Al(OH) 3 sources at the growth front.

KW - Glancing X-ray diffraction

KW - Growth mechanism

KW - Hydrothermal

KW - NiAl-layered double hydroxide

KW - UV–Vis spectroscopy

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JO - Applied Surface Science

JF - Applied Surface Science

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Structural evolution of NiAl-based layered nanostructures grown by a low-temperature hydrothermal method

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Keywords

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