The FTIR spectra of the silica xerogel–H 2O 2 composite, obtained by the sol–gel technique, were examined. To support interpretation of the experimental data, vibrational frequencies were calculated using density functional theory (DFT) and B3LYP functional for low-molecular-weight models of ...
The secondary structure of adsorbed IgG was quantified using second-derivative spectra for the input parameters of the curve-fitting analysis of the original spectra. The secondary structure of adsorbed IgG on a hydrophilic silica surface resembles that of IgG in solution (about 60% beta-sheet and...
FTIR spectra are reported of CO adsorbed on silica-supported copper catalysts prepared from copper(II) acetate monohydrate. Fully oxidised catalyst gave bands due to CO on CuO, isolated Cu2+ cations on silica and anion vacancy sites in C... GJ Millar,CH Rochester,KC Waugh - 《Journal of th...
Photoluminescence and Raman spectra of porous silicon testify to silicon nanocrystallites remaining in pores with great optical penetration depth. Most medicines have a high concentration of silica, which is evident from the fact that a large number of molecules present in the form of a single mole...
15,Cahn F, Compton S. Multivariate calibration of infrared spectra for quantitative analysis using designed experiments. Appl Spectrosc, 1988, 42:865 16,Painter PC, Rimmer SM, Snyder RW, et al. A fourier transform. infrared study of mineral matter in coal: the application of a least squares ...
The protein infrared spectra were enhanced using Fourier self-deconvolution, and spectral changes during adsorption were interpreted in terms of protein conformation changes. An increase in the β-structure content of fibronectin and fibrinogen was observed upon adsorption. 展开 ...
Transmission FTIR, diffuse reflectance FTIR (DRIFT) and UV (DRUV) spectroscopy are used to measure the concentration of adsorbed 1 on silica. The diffuse reflectance spectra are treated according to the Kubelka鈥揗unk theory. It is shown that for such a compound absorbing in the UV range, DR...
PA-FTIRspectra of powdered silica, clay and talc show that silica and clay have vibrational bands near 1100 [cm.sup.-1]. To confirm the polymer structure in the two OTR tire treads,PA-FTIRspectra were obtained for two cured carbon black-filled compounds having a blend of NR and cis-1,...
The gels synthesized with this procedure were shown to precipitate together with a silica-rich gel. In addition, the pH level was found to play a determinant role in both C–S–H and N–A–S–H gel synthesis. The C–S–H gel is the major phase formed at pH>11 and N–A–S–H ...
The USY-550-700 final sample is used for FTIR Spectra of adsorbed pyridine to study the type of acidity produced on the sample prepared. This sample is also tested in the chemical reaction as a catalyst to study the effect of acidity developed on it in the chemical reaction. The study of...