UV–Vis DR spectra of studied samples were recorded on the Shimadzu spectrophotometer UV-2501 PC with ISR-240A diffuse reflection attachment in relation to BaSO4 in a wavelength range of 190– 900 nm (11,000–54,000 cm−1).
UV–Vis DR spectra of studied samples were recorded on the Shimadzu spectrophotometer UV-2501 PC with ISR-240A diffuse reflection attachment in relation to BaSO4 in a wavelength range of 190–900 nm (11,000–54,000 cm−1).