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Characteristics of Nanosized Ni, NiCo–Y2O3 Powders Synthesized by a PVA Solution Route at Low Temperature

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Nanosized Ni, NiCo–Y2O3 powders were successfully synthesized at low temperature via a simple polymer solution route. As an organic carrier, polyvinyl alcohol (PVA) afforded an atom-scale homogeneous precursor gel, which in turn gave fully crystallized nanosized Ni, NiCo–Y2O3 powder upon calcination at a low temperature under an Ar-4% H2 atmosphere. The PVA content, calcination temperature, heating time, and reduction conditions affected the microstructure and crystallization behavior of the as-synthesized powders. The PVA content also influenced the synthesis behavior and microstructure of the final powder. The particle size increased with an increase in the calcination temperature and decrease in the PVA content. At a PVA-metal ion ratio of 4:1, the measured particle size was about 20 nm. The results of TEM mapping on the NiCo–Y (0.6 wt%) powders revealed a well-dispersed Y2O3 phase in the NiCo crystalline matrix.
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Keywords: Ni Nano Powder; NiCo–Y2O3; Organic/Inorganic; PVA; Powder Synthesis

Document Type: Research Article

Affiliations: 1: Nuclear Materials Research Division, Korea Atomic Energy Research Institute, Daejeon, 34507, Korea 2: Graduate School of Department of Advanced Materials and Engineering, Chungnam National University, Daejeon, 34134, Korea 3: Department of Advanced Materials Science and Engineering, Mokpo National University, Muan, 58554, Korea

Publication date: April 1, 2019

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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