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Fourier transform infrared spectroscopy
About: Fourier transform infrared spectroscopy is a research topic. Over the lifetime, 48250 publications have been published within this topic receiving 1134369 citations.
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TL;DR: In this article, the structural, morphological and magnetic properties of the products were determined by X-ray powder diffractometry (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), vibrating sample magnetometer (VSM), respectively.
210 citations
TL;DR: In this paper, multi-walled carbon nanotubes (MWCNTs) were functionalized via oxidation with a mixture of concentrated sulfuric acid and nitric acid.
Abstract: Multi-walled carbon nanotubes (MWCNTs) were functionalized via oxidation with a mixture of concentrated sulfuric acid and nitric acid. Thus functionalized nanotubes (f-MWCNTs) were silanized using a coupling agent, 3-Aminopropyltriethoxysilane (3-APTES). The f-MWCNTs and the reaction product of f-MWCNTs and 3-APTES (APTES–MWCNTs) were characterized by Fourier Transform Infrared Spectroscopy, Energy Dispersion Spectroscopy, Scanning Electron Microscopy, and Transmission Electron Microscopy. The results indicate the attachment of silane molecules on the surface of the functionalized MWCNTs. This silanization method allows for the improvement of the chemical compatibility of MWCNTs with specific polymers for application in nanotube-based polymer matrix composites.
210 citations
TL;DR: In this paper, an intermixing of ethylenediamine (EN) either with ethanol (EtOH) or water in different volume ratios (either 15:85, 50:50 or 85:15 in particular) was used to generate the structural forms of α-Fe2O3.
Abstract: Nanospindle and nanorhombohedron and nanocube structured α-Fe2O3 was synthesized by the solvothermal method. An intermixing of ethylenediamine (EN) either with ethanol (EtOH) or water in different volume ratios (either 15:85, 50:50 or 85:15 in particular) was used to generate the structural forms of α-Fe2O3. The study showed that, during synthesis, EN functioned as a ligand and facilitated the growth of nanostructured samples. The probable growth mechanism is discussed in this paper. Field emission scanning electron microscope (FESEM) and transmission electron microscope (TEM) investigations revealed that the nanostructures were formed through oriented attachment of primary nanocrystals. Fourier transform infrared spectroscopy (FTIR) results showed the presence of Fe–O or Fe–O–Fe vibrational bands whereas UV–vis–NIR optical absorbance spectra showed two prominent absorption bands around 540–560 and 670–680 nm. The room temperature magnetization measurement revealed that the remanence and coercivity depend on the morphological attributes of the nanocrystals. The magnetic hysteresis measurement also revealed that α-Fe2O3 nanostructures displayed weak ferromagnetic behaviour at room temperature.
210 citations
TL;DR: In this paper, gum Arabic and chitosan electrostatic complexes were formed at different pH values (3.0, 4.5, and 6.0) and the rheological and microstructural characteristics of the coacervates were evaluated.
209 citations
TL;DR: The feasibility of creating Ti6Al4V surfaces having both a microtexture and a nanotexture is demonstrated, and it is shown that their properties can be tailored by controlling the length of exposure to a mixture of H2SO4 and H2O2.
209 citations