School of Science (SSC)

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Browsing School of Science (SSC) by Subject "Aluminium Template"

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    Fabrication and characterization of Ni nanorods by electrodeposition into alumina template
    (University of Management and Technology Lahore, 2017) Maryam Nazir
    Highly ordered one dimensional Ni nanorods were successfully fabricated through a simple and inexpensive method of electro-deposition of commercially available Nickel Nitrate powder [Ni(NO3)2.6H2O] inside the aluminium template. The aluminium template was prepared in the lab by two step anodization process by using 0.3M oxalic acid solution as an electrolyte and under a constant voltage of 40V. The electro-deposition process was carried out at a constant current density of 10mAcm-2. The morphological and structural properties of grown Ni nanorods were characterized through Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD) and Atomic Force Microscopy (AFM). The SEM images showed the uniform growth of Ni nanorods and indicated the vertical alignment of nanorods on the aluminium substrate. The diameter of as-prepared Ni nanorods was 40 to 90 nm which is in agreement with the pore diameter of aluminium template. XRD analysis showed the face centerd cubic structure of Ni nanorods and verifies the presence of Ni in the template. The topographical study and nanomechanical properties of nanorods were studied using atomic force microscope (AFM). Images taken by AFM indicated the average width and length of Ni nanorods to be 46 nm and 93 nm, respectively. Densely assembled and unidirectionally arranged nanorods with diameters 35 nm to 95 nm and lengths of several micrometers are observed. The diameter of these nanorods is almost fitting the diameter of the alumina template. The purpose of using aluminium template has many advantages as it is cost effective method and one dimensional nanostructure of desired length and diameter can be obtained. Template directed synthesis of Ni nanorods indicate the suitability of Direct Current (DC) electro-deposition process as a successful route for template filling to synthesize various metal nanostructures.