Comparison of Structure and Magnetic Properties of Ni/C Composites Synthesized from Wheat Straw by Different Methods

Synthesis of Ni/C nanostructured composites based on a natural raw material, i.e., wheat straw, is carried out in this work. The synthesis is performed by one- and two-stage methods using NiCl2 as the activating agent. The X-ray diffraction and EDS analyses reveal the presence of metallic nickel in...

Full description

Saved in:
Bibliographic Details
Published in:Applied sciences 2021-11, Vol.11 (21), p.10031
Main Authors: Bordun, Ihor, Chwastek, Krzysztof, Całus, Dariusz, Chabecki, Piotr, Ivashchyshyn, Fedir, Kohut, Zenoviy, Borysiuk, Anatoliy, Kulyk, Yuriy
Format: Article
Language:English
Subjects:
Activated carbon
adsorption properties
Aerosols
Aqueous solutions
Automation
Distribution functions
Energy storage
magnetic hysteresis
Magnetic measurement
Magnetic moments
Magnetic properties
Magnetic saturation
Metals
Methods
Nanocomposites
Nanoparticles
nanostructured composite
Nickel chloride
Pore size
Porous media
porous structure
Straw
Wheat
Wheat straw
X-ray diffraction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Synthesis of Ni/C nanostructured composites based on a natural raw material, i.e., wheat straw, is carried out in this work. The synthesis is performed by one- and two-stage methods using NiCl2 as the activating agent. The X-ray diffraction and EDS analyses reveal the presence of metallic nickel in the structure of the composites, whereas magnetic measurements showed that nickel was contained in the porous carbon matrix in the nanoparticle state. For nanocomposites synthesized by the one-stage method, the largest contribution to the formation of the porous structure might be attributed to pores with radii from 5 to 30 nm; for a nanocomposite synthesized in two stages, the pore distribution function exhibits a narrow isolated peak with a maximum of around 2.6 nm. Based on the obtained magnetic data, the coercive force, specific saturation magnetization and nickel content in nanocomposites are calculated. For the measured values of the coercive force, the average size of magnetic moment carriers is determined to be ~100 nm for the two-stage synthesis nanocomposite and ~100 ÷ 110 nm for the one-stage synthesis nanocomposites. The developed Ni/C nanocomposites might be used as a cheap material for energy storage applications or as magnetically controlled adsorbents.
ISSN:2076-3417
2076-3417
DOI:10.3390/app112110031