Abstract

Abstract A stable round-the-clock photocatalyst was prepared for the first time by combining Sr 2 MgSi 2 O 7 : (Eu, Dy) (SMSO) and g-C 3 N 4 . When the external light source was removed, the new-type photocatalyst still remained photocatalytic activity for about 6 h. Furthermore, the photocatalytic activity was enhanced by combined with SMSO, possibly due to the higher visible-light utilization efficiency and the reduced recombination rate of the photo-generated carriers. The repeated photocatalysis experiment showed that the photocatalytic activity was stable.

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