The effect of Pr substitution on the spectrum and photocatalytic performance of MgAl2O4 nanoparticles

To study the spectral regulation of Pr on MgAl2O4 nanoparticles, different contents of Pr doped MgAlPr ternary hydrotalcite were synthesized by co-precipitation method, and Pr containing mixed metal oxides Pr-x-y was prepared by high-temperature calcination. The Pr had little effect on the morpholog...

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Published in:Digest Journal of Nanomaterials and Biostructures 2024-11, Vol.19 (4), p.1719-1735
Main Authors: Yu, Z. J., Zhou, J. B., Xu, M. H., Yang, Y. F., Wang, Y. Y.
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Zhou, J. B.
Xu, M. H.
Yang, Y. F.
Wang, Y. Y.
description To study the spectral regulation of Pr on MgAl2O4 nanoparticles, different contents of Pr doped MgAlPr ternary hydrotalcite were synthesized by co-precipitation method, and Pr containing mixed metal oxides Pr-x-y was prepared by high-temperature calcination. The Pr had little effect on the morphology of hydrotalcite, but significantly improved the heat resistance. The Pr significantly reduced the Eg values of MgAl-L and its mixed oxide ( Eg=1.68–1.87 eV). After 100 min of irradiation with visible light, the degradation rate of MB reached 87.7%. In the reaction system of Pr-0.05-500/H2O2, h+ played a major role. There was a corresponding relationship between the photocatalytic performance and L* value of mixed oxide nanoparticles based on MgAl-L and Pr-0.05-L. The NIR of hydrotalcite or Pr containing nanoparticles was greatly affected by the calcination temperature and Pr containing, but the values of NIR were more than 50%.
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