Higher amines have the prefix amino as a functional group

Abstract:
CTAB (cetyltrimethylammonium bromide) coated manganese ferrite (MnFe2O4), nickel ferrite (NiFe2O4) and zinc ferrite (ZnFe2O4) nanoparticles with crystallite sizes of 23 nm, 15 nm, and 28 nm respectively were successfully synthesized by a facile co-precipitation method. The presence of CTAB on the surface of the nanoparticles was confirmed by the Transmission Electron Microscope (TEM) and Fourier Transform-Infrared spectrum (FT-IR). The magnetic study shows a high saturation magnetization of 46 emu/g (MnFe2O4), 59 emu/g (NiFe2O4) and 55 emu/g (ZnFe2O4) which indicates the Fe-O-Fe super-exchange interaction driven by the synergistic influence of magnetocrystalline anisotropy and cation distribution. The Field Cooling (FC) and Zero Field Cooling (ZFC) curves confirmed the superparamagnetic nature of all the samples. The induction heating study elucidates the efficiency of heat generation (>42°C) in all samples showing an exceptionally high specific absorption rate (SAR) of 480 Wg-1, 684 Wg-1, 586 Wg-1 at 2 mg/ml in which CTAB-NiFe2O4 nanoparticles shows the highest efficiency. This is attributed to the co-dependent factors: size, saturation magnetization and Neelian relaxation loss mechanism. This comparative study discussed on the collaborative influences of structural motifs and magnetic properties that engendered the effectiveness of heat generation making it viable for hyperthermia application.

Phase-transfer catalysts for anionic reactants are often quaternary ammonium salts

Biography:
Dr. Naoufel Khemiri is an Assistant Professor at El Manar Preparatory Engineering Institute in Tunisia. He obtained his Ph.D thesis in “Condensed Matter Physics” from the Faculty of Sciences of Tunis (FST), University of Tunis El Manar, Tunisia in 2012. He is now member of Photovoltaic and Semiconductor Materials Laboratory (ENIT, Tunis, Tunisia). He works mainly on the synthesis and the characterization of ternary and quaternary compounds (CuInS2, Zn(S,O), SnSb4S7, Cu2ZnSnS4 and Cu2ZnxFe1-xSnS4) for opto-electronic and solar cell applications. He published more than 20 papers in International Journals with impact factor and participated in several international conferences in materials science.


Organic Chemistry/Amines - Wikibooks, open books for …

Biography:
Dr. Naoufel Khemiri is an Assistant Professor at El Manar Preparatory Engineering Institute in Tunisia. He obtained his Ph.D thesis in “Condensed Matter Physics” from the Faculty of Sciences of Tunis (FST), University of Tunis El Manar, Tunisia in 2012. He is now member of Photovoltaic and Semiconductor Materials Laboratory (ENIT, Tunis, Tunisia). He works mainly on the synthesis and the characterization of ternary and quaternary compounds (CuInS2, Zn(S,O), SnSb4S7, Cu2ZnSnS4 and Cu2ZnxFe1-xSnS4) for opto-electronic and solar cell applications. He published more than 20 papers in International Journals with impact factor and participated in several international conferences in materials science.