Research Paper

Journal of Nanoparticle Research

, Volume 11, Issue 6, pp 1421-1427

Generation and characterization of NiO nanoparticles by continuous wave fiber laser ablation in liquid

  • Sohaib Z. KhanAffiliated withCorrosion and Protection Centre, School of Materials, The University of ManchesterLaser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester Email author 
  • , Yudie YuanAffiliated withCorrosion and Protection Centre, School of Materials, The University of Manchester
  • , Amin AbdolvandAffiliated withLaser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester
  • , Marc SchmidtAffiliated withLaser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester
  • , Philip CrouseAffiliated withLaser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester
  • , Lin LiAffiliated withLaser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester
  • , Zhu LiuAffiliated withCorrosion and Protection Centre, School of Materials, The University of Manchester
  • , Martin SharpAffiliated withLaser Engineering Group, Department of Engineering, The University of Liverpool
  • , K. G. WatkinsAffiliated withLaser Engineering Group, Department of Engineering, The University of Liverpool

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Abstract

Pulsed laser ablation in liquid (PLAL) has been widely applied for the generation of nanoparticles (NPs). We report on the generation of NiO NPs using a high-power, high-brightness continuous wave (CW) fiber laser source at a wavelength of 1,070 nm. Characterization of such NPs in terms of size distribution, shape, chemical composition, and phase structure was carried out by transmission electron microscopy (TEM), high-resolution TEM equipped with energy-dispersive X-ray (EDX), and X-ray diffraction (XRD). The results revealed the formation of NiO NPs in water with an average size of 12.6 nm. The addition of anionic surfactant sodium dodecyl sulfate (SDS) reduced the size of NiO NPs down to 10.4 nm. The shape of the NPs was also affected by the SDS, showing the change of shapes from spherical domination in water to tetragonal with increased SDS concentrations. Furthermore, the NiO NPs generated in water and SDS solutions were dual phase containing both cubic and rhombohedral structures. It was also found that the NiO NPs were single crystalline in nature irrespective of the size and shape.

Keywords

Nanomaterials Cubic and rhombohedral nickel oxide CW laser Nanoparticle synthesis Colloids