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Materials 2019, 12(5), 805;

Synthesis of NiO Nanotubes via a Dynamic Thermal Oxidation Process

State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China
School of Physical Engineering, Zhengzhou University, Zhengzhou 450001, China
Beijing Synchrotron Radiation Facility Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
Department of Biochemistry, Pingdingshan Vocational and Technical College, Pingdingshan 467000, China
Author to whom correspondence should be addressed.
Received: 19 February 2019 / Revised: 5 March 2019 / Accepted: 6 March 2019 / Published: 8 March 2019
(This article belongs to the Section Advanced Nanomaterials)
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Nickel oxide (NiO) nanotubes were synthesized via a thermal oxidation process from Ni nanowires. The effects of oxidation temperature on the morphology, microstructures, and composition of nanowires were investigated using scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The results show that the Ni nanowires convert initially to Ni/NiO core-shell nanowires with increasing annealing temperatures, and then to the nanotubes at the critical transition temperature of about 425 °C. Our findings provide useful information for the preparation of NiO nanotubes to meet the required applications. View Full-Text
Keywords: NiO nanotubes; thermal oxidation; microstructure; critical transition temperature NiO nanotubes; thermal oxidation; microstructure; critical transition temperature

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Xiang, W.; Dong, Z.; Luo, Y.; Zhao, J.; Wang, J.-O.; Ibrahim, K.; Zhan, H.; Yue, W.; Guo, H. Synthesis of NiO Nanotubes via a Dynamic Thermal Oxidation Process. Materials 2019, 12, 805.

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