Surface analysis of nickel nanomaterials electrodeposited on graphite surface

Ivan Saldan; Erik Lewin; Oksana Dobrovetska; Dennis Karlsson; Oleh Bilan; Orest Kuntyi

Surface analysis of nickel nanomaterials electrodeposited on graphite surface

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Author(s): Ivan Saldan^{1, 2} ; Erik Lewin² ; Oksana Dobrovetska³ ; Dennis Karlsson² ; Oleh Bilan⁴ ; Orest Kuntyi³
- Affiliations: 1: Faculty of Chemistry , Ivan Franko National University of Lviv , Kyryla & Mefodia 6, Lviv 79005 , Ukraine ;
  2: Department of Chemistry, Ångström Laboratory , Uppsala University , Box 538, Uppsala 75121 , Sweden ;
  3: Institute of Chemistry and Chemical Technologies, Lviv Polytechnic National University , Bandery 12, Lviv 79013 , Ukraine ;
  4: Industrial Company “Autonomous Power Sources” , Lvivska 2, Velyki Mosty 80074 , Ukraine
Source: Volume 14, Issue 12, 23 October 2019, p. 1233 – 1237
DOI: 10.1049/mnl.2019.0319 , Online ISSN 1750-0443

Received 17/05/2019, Accepted 02/08/2019, Revised 09/07/2019, Published 23/10/2019

Pure Nickel (Ni) and Nickel–Palladium (Ni–Pd) alloy were electrodeposited on graphite surface via pulse electrolysis in dimethyl sulfoxide in form of rods and nanoparticles with a diameter of ∼100–350 and ∼10–35 nm, respectively. X-ray photoelectron spectroscopy (XPS) spectra of Ni 2p_3/2 region for these nanomaterials suggests on their surface Ni²⁺ precursor while after Ar⁺ ion-etching metallic nickel starts to be dominated. Both Pd⁰ and Pd²⁺ for XPS spectra of Pd 3d_5/2 and 3d_3/2 were observed after electrodeposition. Scanning electron microscope-energy dispersive X-ray and XPS analysis confirmed electrodeposition of nickel nanomaterials in non-aqueous electrolyte. Using a lower concentration of Ni²⁺ precursor, nanoparticles with an average particle size of ∼10–23 nm were prepared on a graphite surface.

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