期刊
CERAMICS INTERNATIONAL
卷 39, 期 4, 页码 3909-3914出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2012.10.237
关键词
Sol-gel; Grain size; Nanoparticles; Nickel oxide
资金
- High Impact Research Grant from the University of Malaya [UM.C/625/1/HIR/030]
- High Impact Research Grant from the Ministry of Higher Education Malaysia [UM.C/625/1/HIR/MOHE/05]
- University of Malaya [PS350-2010B]
Nickel oxide nanoparticles (NiO NPs) were synthesised using a sol gel method in a gelatinous medium. Gelatine was used as a size-limiting polymerisation agent for the growth of NiO NPs. X-ray diffraction (XRD) analysis revealed that increasing the calcination temperature increased the crystallite size and decreased the size of the lattice constant. The size-strain plot method (SSP) was used to measure the individual contribution of grain sizes and micro strain on the peak broadening of NiO NPs. Transmission electron microscopy (TEM) showed the ultrasmall size of the NiO NPs with a narrow size distribution(10 +/- 0.2 nm). The band gap value of NiO NPs was calculated using ultraviolet visible (UV-Vis) spectroscopy and decreased with increased calcination temperature. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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