In this study, a derivative method is applied for the determination of dye concentration in fabrics dyed with tricomponent dye mixtures. The reflectance of spectra of the samples were recorded between 400 and 700 nm. Initially, the obtained (K/S) spectra were divided by the spectrum of a standard sample dyed with two of the components in the ternary mixture and the derivative spectra were calcu...

The four-layered Aurivillius SrBi4Ti4O15 compound has been reported to be potentially used as a photocatalyst material. In this research, was prepared by the molten salt method using NaCl/KCl and then degrade methylene blue. analysis of sample diffractogram indicated that obtained but there still impurities Bi4Ti3O12. micrograph showed particle shape is plate-like (sheets) with lot agglomeratio...

In this work we present a detailed study showing the importance of Kubelka-Munk (KM) correction in analysis diffuse reflectivity measurements to characterize spin crossover compounds. Combined reflectance and magnetic susceptibility are carried out as function temperature or time highlight conditions under which becomes critical. particular, investigate influence color contrast between two stat...

A supramolecular cocrystal of 2-ammino-5-nitropyridine (ANP) with 2,4-dinitrophenol (DNP) has been successfully grown by the slow evaporation solution growth technique. The crystal structure 2-amino-5-nitropyridine-2,4-dinitrophenol (ANDP) was elucidated single-crystal X-ray diffraction analysis, and it belongs to a monoclinic system centrosymmetric space group P21/n. bulk phase purity homogene...

The electrical properties of Os-doped YbFeO3 (YbFO) powders prepared by solid-state reaction have been studied Impedance Spectrometer/Impedance Spectrometer. SEM, XPS and Raman spectroscopy were utilized for understanding chemical structured analysis the synthesized compounds. SEM images revealed void nature pellets. Furthermore, studies exhibited that Yb has 3 + valance state. It is also oxyge...

The present paper is devoted to the comparison of determination methods optical pseudogap values Ag7(Si1-xGex)S5I (x = 0, 0.2, 0.4, 0.6, 0.8, 1.0) solid solutions by means two spectroscopy techniques: absorption and diffuse reflection. Optical was performed on thin single crystalline plane-parallel samples. Diffuse reflectance spectra were obtained samples in form microcrystalline powders (~ 10...

The determination of the optical band gap energy (Eg) is important for optimization generation electron/hole pairs in semiconductor materials under illumination. For this purpose, classical theory proposed by Kubelka and Munk (K-M) has been largely employed study amorphous polycrystalline materials. In paper, authors demonstrate, step step, how to use K-M function apply it thoroughly Eg TiO2 po...