Green Preparation of Multiwalled Carbon Nanotubes Supported Pd and Cu Nanoparticles with Novel Vic-dioxime Metal Complexes

Year 2018, Volume: 5 Issue: 3, 1249 - 1256, 01.09.2018

Fatma Ulusal , Bilgehan Güzel

https://doi.org/10.18596/jotcsa.381305

Abstract

The preparation of multi-walled
carbon nanotubes (MW-CNTs) supported Cu and Pd nanoparticles on utilizing a
supercritical carbon dioxide deposition method were
investigated. Novel vic-dioxime
complexes of Cu(II) and Pd(II) were used as metallic precursors. The ligand
used in these precursors were 4-(trifluoromethyl)aniline-vic-dioxide. Ligand and metal complexes were synthesized and identified
with various analyses method including ¹H and ¹⁹F NMR,
FT-IR, UV-Vis, elemental analysis and magnetic susceptibility. MW-CNTs
supported Pd and Cu nanoparticles were characterized by high-resolution
transmission electron microscopy (HR_TEM), X-ray diffraction (XRD) and scanning
electron microscopy with EDX (SEM_EDX). SEM_EDX and HR_TEM micrographs showed a
homogenous distribution of reasonably well-dispersed
Cu and Pd nanoparticles on the support. The nature and crystallinity of the
nano metal particles were confirmed using XRD. Crystallite sizes ranged from
7-20 nm for palladium and 20-30 nm for copper. This study demonstrated that
these oxime complexes are suitable precursors for the preparation of supported
nanoparticles using a supercritical carbon dioxide deposition method. 

Keywords

vic-dioxime, metal complex, precursor, green chemistry, supercritical deposition

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