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Synthesis of NiSe2 and Ni0.85Se nano-materials by salt-alkali-composited-mediated and their structure transformation mechanism(PDF)

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2018年06期
Page:
732-
Research Field:
Publishing date:

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Title:
Synthesis of NiSe2 and Ni0.85Se nano-materials by salt-alkali-composited-mediated and their structure transformation mechanism
Author(s):
Guan Jianxiang12Lei Jia3Shi Tailong3Wang Zhengyuan3Liu Wanying2Kong Chunyang1
1.College of Physics and Electronic Engineering,Chongqing Normal University,Chongqing 401331,China; 2.Department of Information Technology,Yancheng Kindergarten Teachers College,Yanchen 224000,China; 3.School of Material Science and Engineering,China University of Mining and Technology,Xuzhou 221116,China
Keywords:
salt-alkali-composited-mediated method nickelous selenide nano-materials X-ray diffraction energy-dispersive X-ray spectroscopy field emission scanning electron microscope
PACS:
O482
DOI:
10.14177/j.cnki.32-1397n.2018.42.06.015
Abstract:
Two nano-materials with different structures of NiSe2 octahedron and Ni0.85Se nanometre slice are synthesized using the melting salt-alkali-composited-mediated(SACM)method. The influences of the reaction time and added water on the products are researched. The two nano-materials are characterized by X-ray diffraction(XRD),energy-dispersive X-ray spectroscopy(EDS)and field emission scanning electron microscope(FESEM),and the mechanism of growth and structure change of nickelous selenide are explored. The band gaps of NiSe2 and Ni0.85Se are evaluated as 1.47 eV and 1.75 eV through UV-visible absorption spectrum,and correspond to the visible region. NiSe2 and Ni0.85Se are typical semiconductor materials.

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Last Update: 2018-12-30