Topic
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.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, the potential of exploding wire technique (EWT) to synthesize the copper nanoparticles using the copper metal in a plate and wire geometry was explored, which revealed existence of additional minority CuO phase, not determined earlier through XRD and TEM analysis.
164 citations
TL;DR: In this article, a multilayer ultrathin film composed of exfoliated nanosheets of manganese oxide and poly(diallyldimethylammonium) (PDDA) ions have been fabricated onto various substrates via electrostatic self-assembly technique.
Abstract: Multilayer ultrathin films composed of exfoliated nanosheets of manganese oxide and poly(diallyldimethylammonium) (PDDA) ions have been fabricated onto various substrates via electrostatic self-assembly technique. Dense monolayer coverage of the substrate surface by the nanosheets was confirmed by atomic force microscopy. UV−vis absorption spectroscopy provided evidence for subsequent growth of multilayer film, exhibiting progressive enhancement of optical absorption due to manganese oxide nanosheets. Evolution of a Bragg peak in the layer-by-layer deposition process also supported the growth of a nanostructured film of PDDA/MnO2 nanosheets with a repeating periodicity of ca. 0.9 nm. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy revealed the inorganic−organic hybrid nature of the obtained multilayer assemblies. Calcination of the films at temperatures above 500 °C removed the polycations, yielding an ultrathin film of manganese oxide Mn2O3. Cyclic voltammogram measurements r...
164 citations
TL;DR: The different mobility of carbon atoms in the intercalated alkyl chain is demonstrated, indicating a freer conformational situation in the hybrids with higher surfactant content.
164 citations
TL;DR: It is shown that initial silanization takes place very fast but the progress toward saturation is very slow, and the mechanism may involve adsorption, chemical sorption, and chemical diffusion processes.
Abstract: Silanization of magnetic ironoxide nanoparticles with (3-aminopropyl)triethoxylsilane (APTES) is reported The kinetics of silanization toward saturation was investigated using different solvents including water, water/ethanol (1/1), and toluene/methanol (1/1) at different reaction temperature with different APTES loading The nanoparticles were characterized by Fourier transform infrared spectroscopy, vibrating sample magnetometry, transmission electron microscopy, and thermal gravimetric analysis (TGA) Grafting density data based on TGA were used for the kinetic modeling It is shown that initial silanization takes place very fast but the progress toward saturation is very slow, and the mechanism may involve adsorption, chemical sorption, and chemical diffusion processes The highest equilibrium grafting density of 301 mg/g was yielded when using toluene/methanol mixture as the solvent at a reaction temperature of 70 °C
163 citations
TL;DR: In this article, the types of complexes that salicylate (2-hydroxy-benzoate) forms with the surface of goethite (α-FeOOH) in aqueous medium were studied in situ by using cylindrical internal reflection (CIR) Fourier transform infrared (FTIR) spectroscopy.
Abstract: The types of complexes that salicylate (2-hydroxy-benzoate) forms with the surface of goethite ({alpha}-FeOOH) in aqueous medium were studied in situ by using cylindrical internal reflection (CIR) Fourier transform infrared (FTIR) spectroscopy. Results obtained from CIR-FTIR studies were compared with adsorption isotherm experiments in order to relate the level of salicylate coverage to the nature of the surface complex. At lower surface coverages all the interfacial salicylate has a chelate structure in which one carboxylic oxygen and the ortho phenolic oxygen bind one Fe atom of the goethite surface. At higher surface coverages this chelate complex coexists with salicylate ions, which are weakly bound in the double layer.
163 citations