Related Experiment Video
Updated: Aug 15, 2026
Synthesis and Characterization of Fe-doped Aluminosilicate Nanotubes with Enhanced Electron Conductive Properties
Published on: November 15, 2016
Influence of Ru doping on structural, optical, and photocatalytic properties of (Cd-Ni-Mn) nanoferrites
Serine Kassem1, Amani Aridi2,3, Ramadan Awad4
1Physics Department, Faculty of Science, Beirut Arab University, Beirut, Lebanon.
Abstract:
This study reports the synthesis of (Cd0.4Ni0.4Mn0.2)Fe2-xRuxO4 nanoparticles (NPs), where x = 0.00, 0.005, 0.01, 0.015, 0.02, and 0.04, via co-precipitation method. The synthesized samples were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), and photoluminescence (PL) spectroscopy. The results confirmed the purity of the samples with the presence of a very small fraction of the hematite phase. Pseudo-spherical morphology was recognized from TEM images. Then, the prepared samples were further used as effective photocatalysts for the degradation of nitrobenzene under UV irradiation to examine the effect of doping on the photocatalytic activity. Among the synthesized samples, (Cd0.4Ni0.4Mn0.2)Fe1.985Ru0.015O4 NPs exhibited superior photocatalytic activity. This result is in good agreement with photoluminescence (PL) analysis in which (Cd0.4Ni0.4Mn0.2)Fe1.985Ru0.015O4 NPs revealed the slowest recombination rate of the electron-hole pair. To further improve the photocatalytic performance, different weight % of graphene was incorporated with (Cd0.4Ni0.4Mn0.2)Fe1.985Ru0.015O4 NPs. Finally, 81.41% of nitrobenzene was degraded after 180 min in the presence of 5 wt% graphene/(Cd0.4Ni0.4Mn0.2)Fe1.985Ru0.015O4 nanocomposites, and the degradation rate constant was estimated as 8.4 × 10-3 min-1.
More Related Videos
Related Concept Videos
02:51Metal-Ligand Bonds
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
02:42Valence Bond Theory
02:58Crystal Field Theory - Octahedral Complexes
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
03:02Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.