Physicochemical impacts of formation and assembly of quantum dots flowery island of the (Sr-Cr-O) semiconductor

Abstract

In this paper, we fabricate a reactive self-assembled nanostructure of strontium chromium oxygen system (Sr- Cr-O). The ternary oxide SrCrO4 has been prepared as a QDs decorated superlattice. Course of formation as well as the obtained composition was analyzed by a combination of Thermogravimetry (TGA), X-ray diffraction (XRD), UV-vis diffuse reflectance spectra (DRS), scanning electron microscopy in association with EDX and high resolution transmission electron microscopy (TEM). The obtained nanostructure was determined to be composed of SrCrO4 as the major phase and SrCrO3/ SrO1.95 as the minor phases. Excitonic absorption signatures in optical spectroscopy confirmed that quantum confinement is preserved. The methodology involves a modified co-precipitation method. Moreover, excellent UV-visible-light photocatalytic performance was improved toward Methylene blue dye.