Enhanced Photocatalytic Reduction of U(VI) on SrTiO3/ g‐C3N4Composites : Synergistic Interaction

Peng, Mei Mei; Xiao, Jin; Huang, Xinshui; Ishag, Ahadi

doi:10.1002/ejic.202101005

Cited by 8 publications

(1 citation statement)

References 56 publications

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“…Thus, we chose pH 3.3 as the optimal reaction pH values. Methanol as the hole sacrifice reagent was beneficial to the photocatalytic reduction of U(VI). , As illustrated in Figure c, compound 1 exhibits negligible photocatalytic activity in the absence of methanol, which may be ascribed to the lower separation efficiency of photogenerated carriers. When methanol is added, the photocatalytic activity of compound 1 is clearly improved.…”

Section: Resultsmentioning

confidence: 99%

Exploring Electron Transfer Mechanism in Synergistic Interactional Reduced Polyoxometalate-Based Cu(I)–Organic Framework for Photocatalytic Removal of U(VI)

Yang,

Guo,

Zhu

et al. 2024

Inorg. Chem.

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Photocatalytic reduction of U(VI) is a promising method for removing uranium containing pollutants. However, using polyoxometalatebased metal−organic frameworks (POMOFs) for photoreduction of U(VI) is rare, and the relevant charge transfer pathway is also not yet clear. In this article, we demonstrate a highly efficient strategy and revealed a clearly electron transfer pathway for the photoreduction of U(VI) with 99% removal e ffi c i e n c y b y u s 1), as catalyst. The POMOF catalyst was constructed by the connection of reduced {AsMo 10 V 4 } clusters and Cu(I)−MOF chains through Cu−O coordination bonds, which exhibits a broader and stronger light absorption capacity due to the presence of reduced {AsMo 10 V 4 } clusters. Significantly, the transition of electrons from Cu(I)−MOF to {AsMo 10 V 4 } clusters (Cu → Mo/V) greatly inhibits the recombination of photogenerated carriers, thereby advancing electron transfer. More importantly, the {AsMo 10 V 4 } clusters are not only adsorption sites but also catalytically active sites. This causes the fast transfer of photogenerated electrons from Mo/V to UO 2 2+ (Mo/V → O → U) via the surface oxygen atoms. The shorter electron transmission distance between catalytic active sites and UO 2 2+ achieves faster and more effective electron transport. All in all, the highly effective photocatalytic removal of U(VI) using the POMOF as a catalyst is predominantly due to the synergistic interaction between Cu(I)−MOFs and reduced {AsMo 10 V 4 } clusters.

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Section: Resultsmentioning

confidence: 99%