This article studies the synthesis, as well as the structural, vibrational, and optical properties of Eu-doped ZnO quantum dots (QDs) and investigates the energy transfer mechanism from the ZnO host to Eu ions using Reisfeld's approximation. Eu-doped ZnO QDs at varying concentrations (0-7%) were successfully prepared using a wet chemical method. The successful doping of Eu ions into the ZnO host lattice, as well as the composition and valence states of the elements present in the sample, were confirmed through X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses.
View Article and Find Full Text PDFThis study analyzed the nutritional composition, bioactive compounds, antioxidant activities and estimated potential renal acid load (PRAL) score of orange-fleshed sweet potato (OFSP) grown in Vietnam. In addition, important functional groups of carotenoid compounds in OFSP were identified by Fourier transform infrared spectroscopy (FTIR); carotenoid pigments were detected and quantified by high-performance liquid chromatography (HPLC). The results showed that, OFSP had outstanding physicochemical characteristics, containing many nutrients, bioactive substances, minerals and fiber.
View Article and Find Full Text PDFCdSe quantum dots (QDs) with size in the range of 3.5-5.8 nm and a zinc blende (ZB) crystal structure were synthesized by the wet chemical method.
View Article and Find Full Text PDFNatural infection by sp. has been reported in humans and more than 150 species of animals, especially carnivorous and omnivorous mammals. Although the presence of sp.
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