Photoluminescence and magnetic properties of β-Ni(OH)2 nanoplates and NiO nanostructures



Single-crystalline β-nickel hydroxide (β-Ni(OH)2) nanoplates of hexagonal structure have been synthesized through 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. 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. Two photoluminescence emission peaks appear at 390.5 nm and 467 nm in the photoluminescence spectrum of NiO nanostructures and were assigned to the 1T1 g (G) → 3A2 g and 1T2 g (D) → 3A2 g transitions of Ni2+ in oxygen octahedral sites, respectively. Temperature-dependent magnetic measurement results show that an antiferromagnetic-paramagnetic transition occur at 26.3 K in β-Ni(OH)2 nanoplates.


Select Area Electron Diffraction Pattern Brucite Nickel Hydroxide Transmission Electron Microscopy Investigation Landscape Dimension 
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The authors thank S. S. Pan and Prof. G. H. Li for help in photoluminescence measurement. This work was supported by the Research Foundation of Ph.D-degree-conferred subject in University (20070512002), the Program for New Century Excellent Talents (NCET) in University, and the Program for Excellent Young Scientists in Wuhan City, China.


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© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.Department of Materials Science and EngineeringHubei UniversityWuhanPeople’s Republic of China
  2. 2.Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key LaboratoryQingdao UniversityQingdaoPeople’s Republic of China
  3. 3.Superconductivity R&D CenterSouthwest Jiaotong UniversityChengduPeople’s Republic of China
  4. 4.School of Materials Science and EngineeringUniversity of New South WalesSydneyAustralia

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