Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 77, 2015
Previous Article Next Article

Nickel nanocomposites: magnetic and catalytic properties

Author affiliations

Abstract

In this study, we are reporting the synthesis and characterization of nanocomposites obtained from the direct reduction of nickel(II) salts on matrices of polyethylene (Pe) and chitosan (Ch) in the presence of serine under solvothermal conditions. Using different molar ratios between the metal salt (M) and the amino acid (AA), eight nanocomposites were prepared, Ni–Pe1; Ni–Pe2; Ni–Pe3; Ni–Pe4 and Ni–Ch1; Ni–Ch2; Ni–Ch3; Ni–Ch4 (M : AA = 1 : 1, (1); 0.5 : 1, (2); 0.25 : 1, (3) and 0.125 : 1, (4)). The synthesized composites were characterized by X-ray powder diffraction techniques; in all the cases, the peaks associated to the matrix (Pe or Ch) and three peaks at 2θ values of 44.5°, 51.9°, 76.4° were identified, which correspond to the Miller indices (111), (200), (220). These indices are characteristic of a face centred cubic Ni0 phase. The SEM images of the composites show that the use of an organic matrix changes the size and distribution of the metallic particles because in all the cases a homogenous dispersion of Ni0-NPs on the matrix surfaces is observed. While the spherical shape observed for isolated Ni0-NPs is retained on the matrices, the size of the metallic particles is smaller than 100 nm with less size variability, as compared with the isolated Ni0-NPs. All the composites have a weak ferromagnetic behaviour with similar hysteresis loops, presenting Hc values ranging from 120 to 226 Oe and reaching saturation at approximately 3 kOe. Preliminary catalytic properties for hydrogen transfer reaction were also investigated, showing that the composites exhibit an important activity in the transformation of acetophenone to 1-phenylethanol.

Graphical abstract: Nickel nanocomposites: magnetic and catalytic properties

Back to tab navigation

Supplementary files

Article information


Submitted
22 May 2015
Accepted
07 Jul 2015
First published
07 Jul 2015

RSC Adv., 2015,5, 63073-63079
Article type
Paper
Author version available

Nickel nanocomposites: magnetic and catalytic properties

C. Castillo, K. Seguin, P. Aguirre, D. Venegas-Yazigi, A. D. C. Viegas, E. Spodine and V. Paredes-Garcia, RSC Adv., 2015, 5, 63073
DOI: 10.1039/C5RA09622G

Social activity

Search articles by author

Spotlight

Advertisements