Preparation of graphene-nickel nanoparticles hybrid by spray pyrolysis using nickel oleate precursor and its application as a ferrofluid. Issue 4 (3rd April 2017)

• Record Type: Journal Article
• Authors: Ghazaghi, Mehri; Mousavi, Hassan Zavvar; Rashidi, Ali Morad; Shirkhanloo, Hamid; Ghaffarian, Hamid Reza
• Is Part Of: Inorganic and nano-metal chemistry. Volume 47:Issue 4(2017)
• Page Start: 558
• Page End: 564
• Publication Date: 2017-04-03
• Subjects: Graphene-nickel nanoparticles hybrid -- spray pyrolysis -- nickel oleate -- thermal conductivity; Inorganic compounds -- Synthesis -- Periodicals; Nanostructured materials -- Periodicals; Reactivity (Chemistry) -- Periodicals; Inorganic compounds -- Synthesis; Nanostructured materials; Reactivity (Chemistry); Periodicals; 546
• DOI: 10.1080/15533174.2016.1186084
• Languages: English
• ISSNs: 2470-1556

Abstract

ABSTRACT: Graphene-nickel nanoparticles (G-Ni Nps) hybrid was produced in a single step through spray pyrolysis method. Toluene and nickel oleate were used as a carbon source and catalyst precursor with different concentrations, respectively. The reaction was performed in a continuous vertical reactor at 900–1000°C. G-Ni Nps was characterized using Raman spectroscopy, transmission electron microscopy, high-resolution transmission electron microscopy, and EDX. The results showed that in an optimized ratio of oleate in toluene, the G-Ni hybrid consisted of less than 10 layers with nickel on the surface of graphene. The thermal conductivity of G-Ni Nps was investigated with 1% nanohybrid in water. The results showed that this hybrid has enhanced thermal conductivity about 23% in comparison with base fluid. In addition, the magnetic properties of G-Ni Nps were investigated and saturation magnetization of 820 emu g −1 obtained.