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X. Wang, J. Song, L. Gao, J. Jin, H. Zheng and Z. Zhang, “Optical and Electrochemical Properties of Nanosized NiO via Thermal Decomposition of Nickel Oxalate Nanofibres,” Nanotechnology, Vol. 16, No. 1, 2005, pp. 37-39. doi:10.1088/0957-4484/16/1/009

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• TITLE: Surfactant-Free Production of Ni-Based Nanostructures

  AUTHORS: Yaser Bahari Mollamahaleh, Davood Hosseini, Mehdi Mazaheri, Sayed Khatiboleslam Sadrnezhaad

  KEYWORDS: Nanoparticles, Nickel, Nickel Oxide, Chip-Like Nanoflakes, Solvothermal Technique

  JOURNAL NAME: Materials Sciences and Applications, Vol.2 No.5, May 23, 2011

  ABSTRACT: This paper introduces a facile surfactant-free method for fabrication of different types of Ni-based nanostructures including metallic nickel nanoparticles (MNNP), nickel oxide nanoparticles (NONP) and chip-like nickel oxide nanoflakes (CNONF) by solvothermal technique at 190°C. Nickel acetyl acetonate (Ni(ac ac)2) was used as nickel precursor for both MNNP and CNONF and NiCO3●2Ni(OH)2●nH2O was utilized for NONP. Organic alcohols including 1-hexanol and benzyl alcohol were used as solvent to produce all powders. The crystallite sizes of MNNP, NONP and CNONF were determined by X-ray diffraction (XRD) to be 30, 9 and 27 nm, respectively. Electron microscopy indicated final particle sizes of 80 nm and 20 nm for MNNP and NONP, respectively and a thickness-layer less than 90 nm for CNONF. Brunauer-Emmett-Teller (BET) experiment determined a high surface area of 68 m2/gr for CNONF.