The decoration of multi-walled carbon nanotubes with nickel oxide nanoparticles using chemical method

S Sahebian,J Vahdati Khaki,S M Zebarjad,A Lazzeri

doi:10.1007/s40089-016-0185-8

S Sahebian, J Vahdati Khaki + Show 2 more

Open Access

https://doi.org/10.1007/s40089-016-0185-8

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Abstract

In this paper, nickel oxide (NiO) nanoparticles have been fabricated using wet method and deposited on the surface of multi-walled carbon nanotube (MWCNT). To do so, functional groups were introduced on the surface of MWCNTs by treating with concentrated nitric acid. Nickel oxide nanoparticles were formed on the surface of functionalized MWCNTs by incipient wetness impregnation of nickel nitrate, and the resultant product was calcinated in air atmosphere. Characteristics of the NiO/MWCNT were examined by various techniques, for example, Fourier transform spectroscopy (FTIR), X-ray diffraction analysis (XRD), transmission electron microscopy (TEM), thermogravimetric analyzer (TGA), and nitrogen adsorption–desorption isothermal as well as vibrating sample magnetometer (VSM). The FTIR spectra showed that carboxyl and hydroxyl functional groups existed on the surface of MWNTs after modification by concentrated nitric acid. The pattern of XRD indicated that MWNTs and nickel oxide nanoparticles coexisted in the NiO/MWCNT sample. The TEM images revealed that the NiO nanoparticles were distributed on the surface of the MWNTs, with the size ranging from 5 to 60 nm. Thermogravimetric analysis proved that NiO content decorated on MWCNTs was 80 and 15 wt%. The results of the Brunauer–Emmett–Teller (BET) data showed that the slight increment in the specific surface areas and porosities in the presence of the NiO nanoparticles on the surface of CNT.

Highlights

Carbon nanotubes (CNTs) have attracted a lot of attention since 1991 due to their unique molecular geometry, the excellent electronic, thermal, and mechanical properties [2, 3, 6, 13, 22, 24, 28]
Characteristics of the nickel oxide (NiO)/ multi-walled carbon nanotube (MWCNT) were examined by various techniques, for example, Fourier transform spectroscopy (FTIR), X-ray diffraction analysis (XRD), transmission electron microscopy (TEM), thermogravimetric analyzer (TGA), and nitrogen adsorption–desorption isothermal as well as vibrating sample magnetometer (VSM)
This study presents the characteristics of NiO nanoparticles deposited on the surface of Multi-walled carbon nanotube (MWCNTs)

Summary

Introduction

Carbon nanotubes (CNTs) have attracted a lot of attention since 1991 due to their unique molecular geometry, the excellent electronic, thermal, and mechanical properties [2, 3, 6, 13, 22, 24, 28]. To improve the CNT properties, nanotubes have been treated in different ways, such as functionalizing, coating, and filling the pristine nanotubes [1, 5, 15]. Because of their interesting dimensions and high surface areas, various inorganic nanoparticles, such as metals, metal oxides, and semiconducting nanoparticles, were coated on the surface of CNTs. Decoration of the surface of CNTs can get better the dispersity of CNTs in solvents [18] as well as promotion their optical, electric, and magnetic properties [7, 19, 25, 26].

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