Abstract
Two-dimensional (2D) free-standing single-crystalline SrMoO4 nanoplates of obvious quasi-square shape have been controllably synthesized using a facile liquid approach at room temperature. The structural characterizations of the nanoplates were investigated in detail by means of XRD, FESEM, and HRTEM. The results indicate that the 2D quasi-square SrMoO4 nanoplates can be formed through the oriented connection and self-assembly process. Meanwhile, controlled experiments show that the concentration of cetyltrimethylammonium bromide (CTAB), water content, reaction time, and concentration of Sr2+ and MoO42− play important roles in the formation of the nanoplates. Moreover, the ultraviolet−visible (UV−vis) absorbance spectra reveal a characteristic optical band gap of 3.12 eV. Most interestingly, such SrMoO4 nanoplates present a strong and broad blue PL emission, which exhibits a noted blue shift compared to previous reports, indicating that the square-shaped SrMoO4 nanostructures have great potential to be ap...
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