One-step hydrothermal synthesis of high surface area m-ZrO2 nanorings with lower band gap, blue emission and high photocatalytic activity
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Herein, monoclinic ZrO2 (m-ZrO2) nanostructures were prepared by a facile one-step hydrothermal method. As-prepared products showed ring-like nanostructures with an average size of ~ 23.1 nm and high surface area. The ring-like m-ZrO2 nanostructures exhibited broad absorption spectra in the visible region (400–800 nm) and a low band gap of 3.7 eV. Moreover, blue emission was also shown by m-ZrO2 nanostructures under the excitation of wavelength 300 nm. As-prepared m-ZrO2 nanostructures show high photocatalytic performance under UV irradiation. The lower band, high surface area and presence of oxygen vacancies may be attributed to the excellent performance of ring-like m-ZrO2 nanostructures as a photocatalyst.
This work was financially supported by the grants from the Science and Technology Innovation Commission of Shenzhen (Grant Nos: JCYJ20180305125302333, JCYJ20170818093035338, JCYJ20180305125430954, ZDSYS201707271554071) and Shenzhen University fund (No. 2017007).