Synthesis of a luminescent g-C₃N₄–WO₃–Bi₂WO₆/SrAl₂O₄:Eu²⁺,Dy³⁺ nanocomposite as a double z-scheme sunlight activable photocatalyst

Abstract

In this paper a novel sunlight activable photocatalyst system based on the synergistic effect between double Z-Scheme g-C3N4-WO3-Bi2WO6 nanocomposite and long-lasting phosphorescent SrAl2O4: Eu2+, Dy3+ nanoparticles has been designed, synthesized...

Phosphor-Enhanced, Visible-Light-Storing g-C3N4/Ag3PO4/SrAl2O4:Eu2+,Dy3+ Photocatalyst Immobilized on Fractal 3D-Printed Supports

“…In fine , phosphors can act as “light batteries”. Although the fabrication of Ag 3 PO 4 /g-C 3 N 4 has been reported numerous times, ,, and, to a lesser extent, the fabrication of phosphor-bearing catalysts involving g-C 3 N 4 , − to the best of our knowledge, the fabrication of an Ag 3 PO 4 /g-C 3 N 4 heterojunction coupled with SrAl 2 O 4 :Eu 2+ ,Dy 3+ has not been described in the literature. Other than the choice of the catalyst/phosphor system, another potential direction for improvement is the optimization of the phosphor morphology.…”

2D–2D WO3–Bi2WO6 photocatalyst with an S-scheme heterojunction for highly efficient Cr(vi) reduction

“…16,26–46 The n-type semiconductor Bi 2 WO 6 is an ideal selection for constructing a heterojunction with WO 3 , due to its unique layered structures composed of corner-shared WO 6 octahedral layers and [Bi 2 O 2 ] 2+ layers. 47–58 Once Bi 2 WO 6 and WO 3 form a 2D/2D heterojunction, a superior coupling interface will be formed, which accelerates the charge migration at the interface. The strong reducing ability of Bi 2 WO 6 due to photo-generated electrons and oxidizing ability of WO 3 due to photo-generated holes can be fully utilized due to the suitable band positions, which is of great significance in enhancing the catalytic efficiency.…”

“…The strong reducing ability of Bi 2 WO 6 due to photo-generated electrons and oxidizing ability of WO 3 due to photo-generated holes can be fully utilized due to the suitable band positions, which is of great significance in enhancing the catalytic efficiency. 20,56,57,59,60 Furthermore, 2D–2D WO 3 –Bi 2 WO 6 heterostructures will have a large number of active sites due to their large specific surface areas, which strengthens the adsorption of the target object and then enhances the photocatalytic performance. However, up to now, only a few 2D–2D WO 3 –Bi 2 WO 6 heterostructures have been reported.…”

Study on alcoholysis recovery and performance of luminous materials in waste luminous fibers

“…Therefore, the number of photons absorbed by the sample reduced, and the number of electrons excited decreased resulting in a lower luminescence of the sample. 21 –23 In the figure, the sample with a catalyst dosage of 0.1 g had the highest excitation intensity, indicating its better performance. The emission spectra (Figure 5(c)) shows that the sample had the same peak pattern as pure SrAl 2 O 4 :Eu 2+ , Dy 3+ with peaks around 520 nm, indicating that the amount of catalyst did not change the luminescence center.…”