Synthesis, microstructures and UV–vis absorption properties of β-Ni(OH) 2 nanoplates and NiO nanostructures

Single-crystalline β-Ni(OH) 2 nanoplates of hexagonal structure have been synthesized through a hydrothermal process. The β-Ni(OH) 2 nanoplates possess well-defined hexagonal shapes with landscape dimension of 45–140 nm and thickness of 20–50 nm. The in-plane surfaces of hexagonal-shaped nanoplates...

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Bibliographic Details
Published in:Journal of crystal growth 2008-08, Vol.310 (18), p.4221-4225
Main Authors: Qi, Yajun, Qi, Hongyan, Li, Jinhua, Lu, Chaojing
Format: Article
Language:English
Subjects:
A1. Crystal morphology
A2. Hydrothermal crystal growth
B1. Nanomaterials
Chemical synthesis methods
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties
Materials science
Methods of nanofabrication
Nanocrystalline materials
Nanoscale materials and structures: fabrication and characterization
Physics
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
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Summary:Single-crystalline β-Ni(OH) 2 nanoplates of hexagonal structure have been synthesized through a hydrothermal process. The β-Ni(OH) 2 nanoplates possess well-defined hexagonal shapes with landscape dimension of 45–140 nm and thickness of 20–50 nm. The in-plane surfaces of hexagonal-shaped nanoplates lies on (0 0 1), and the side surfaces are (1 0 0), ( 0 1 ¯ 0 ) and ( 1 ¯ 1 0 ) . Post-thermal decomposition of the β-Ni(OH) 2 nanoplates led to the formation of single-crystalline NiO nanostructures with landscape dimension of 25–120 nm including nanorolls, nanotroughs and nanoplates. The sizes of the central hole in NiO nanorolls and the low-lying ground in NiO nanotroughs are in the range of 10–24 nm. The optical absorption bands in the wavelength range of 350–800 nm have been interpreted according to the ligand field theory.
ISSN:0022-0248
1873-5002
DOI:10.1016/j.jcrysgro.2008.06.047