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B. Varghese, M. V. Reddy, Z. Yanwu, C. S. Lit, T. C. Hoong, G. V. Subba Rao, B. V. R. Chowdari, A. T. S. Wee, C. T. Lim and C. H. Sow, “Fabrication of NiO Nanowall Electrodes for High Performance Lithium Ion Battery,” Chemistry of Material, Vol. 20, No. 10, May 2008, pp. 3360-3367. doi:10.1021/cm703512k

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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.