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, a composite of multiwalled carbon nanotubes (MWNTs) and molecularly imprinted polymers (MIPs) was prepared by using dopamine (DA) as a template molecule.
Abstract: A novel composite of multiwalled carbon nanotubes (MWNTs) and molecularly imprinted polymers (MIPs) was prepared by using dopamine (DA) as a template molecule. Selective copolymerization of methacrylic acid and trimethylolpropane trimethacrylate (copoly(MAA-co-TRIM)) in the presence of DA was achieved at the vinyl group functionalized MWNT surface. Vinyl groups modified on MWNTs surface are a key factor for the formation the composite of MWNTs-MIPs. Attenuated total reflection Fourier transform infrared spectroscopy, transmission electron microscopy, scanning electron microscopy, and thermogravimetric analysis were used to characterize the composite structure and determine the grafted MIPs quantities in the composite. The properties such as adsorption dynamics, special binding, and selective recognition capacity were evaluated. The results demonstrated that MWNTs-MIPs not only possessed a rapid dynamic adsorption but also exhibited a high selectivity toward DA, compared to epinephrine. The electrochemical...
214 citations
TL;DR: In this paper, molecular dynamics simulations are used to study the static and dynamic properties of 2:1 layered silicates ion exchanged with alkyl-ammonium surfactants, in the form of oligomeric alkanes grafted by cationic groups on atomically smooth crystalline layers 10 A thick and several microns wide.
Abstract: Molecular dynamics (MD) simulations are used to study the static and dynamic properties of 2:1 layered silicates ion exchanged with alkyl-ammonium surfactants. These systems are in the form of oligomeric alkanes grafted by cationic groups on atomically smooth crystalline layers 10 A thick and several microns wide. The organically modified layers self-assemble parallel to each other to form alternating, well-ordered organic/inorganic multilayers. By studying the systems at the experimentally measured layer separations, computer modeling directly provides the structure and dynamics of the intercalated surfactant molecules. The grafted-chain conformations are also expressed through the trans-gauche conformer ratios and transition frequencies which compare well with Fourier transform infrared spectroscopy (FTIR) experiments.
214 citations
TL;DR: In this paper, a simple reflux treatment of ZnFe2O4 nanoparticles (NPs) with graphitic C3N4 sheets in methanol at 90 °C was successfully synthesized through a simple refining treatment of NPs.
Abstract: Magnetic ZnFe2O4–C3N4 hybrids were successfully synthesized through a simple reflux treatment of ZnFe2O4 nanoparticles (NPs) (ca. 19.1 nm) with graphitic C3N4 sheets in methanol at 90 °C, and characterized by X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric and differential thermal analysis, X-ray photoelectron spectroscopy, high-resolution transmission electron microscopy, and UV–vis diffuse reflectance spectroscopy. Also, the catalytic activities of heterogeneous ZnFe2O4–C3N4 catalysts were evaluated in photo-Fenton discoloration toward Orange II using H2O2 as an oxidant under visible light (λ > 420 nm) irradiation. The reaction kinetics, degradation mechanism, and catalyst stability, as well as the roles of ZnFe2O4 and C3N4 in photoreaction, were comprehensively studied. It was found that the ZnFe2O4–C3N4 photocatalysts presented remarkable catalytic ability at neutral conditions, which is a great advantage over the traditional Fenton system (Fe2+/H2O2). The ZnFe2O4–C3N4 hy...
214 citations
TL;DR: In this paper, a 3D nanostructure in which flower-like microspheres consisting of SnO2 nanoflakes distributed among graphene oxide (GO) layers decorated with tiny SnCl2 nanoparticles, and was featured with high surface area (949 m2/g) with high response magnitude (159% for 50ppm NH3), fast response (response and recovery time), and high response time.
Abstract: SnO2/graphene (GN) composite was fabricated via a simple one-pot hydrothermal method with graphene oxide (GO) and SnCl2 as the precursors The composite was characterized by Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction patterns, scanning electron microscopy and high resolution transmittance electron microscopy It exhibited 3D nanostructure in which flower-like microspheres consisting of SnO2 nanoflakes distributed among GN layers decorated with tiny SnO2 nanoparticles, and was featured with high surface area (949 m2/g) GO is supposed to act as a template in the hydrothermal process, promoting the preferential growth of SnO2 nanocrystals and preventing the agglomeration of SnO2 nanoparticles NH3 sensing characteristics of the composite at room temperature were investigated, and found to closely relate to its composition and structure Under optimal conditions, the composite displayed high response magnitude (159% for 50 ppm NH3), fast response (response and recovery time
214 citations
TL;DR: In this paper, mesoporous materials derived from kanemite are synthesized and characterized by X-ray powder diffraction (XRD), N 2 adsorption-desorption, cyclohexane and water physical adaption, scanning electron microscopy (SEM), TEM, thermogravimetric analyses (TGA), Fourier transform infrared (FTIR) and 13 C and 29 Si magic-angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy.
214 citations