1. Polymer-Based Immobilized FePMo 12 O 40 @PVP Composite Materials for Photocatalytic RhB Degradation.
- Author
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Wang, Zijing, Tang, Yuze, Ai, Limei, Liu, Minghui, and Wang, Yurong
- Subjects
COMPOSITE materials ,PHOTODEGRADATION ,VISIBLE spectra ,RHODAMINE B ,BAND gaps ,LIGHT sources - Abstract
FePMo
12 O40 @PVP composite materials were synthesized with the regulation of polyvinylpyrrolidone (PVP) to control the structure. The samples were characterized by FT-IR, XRD, XPS, SEM, TEM and UV-Vis DRS. The composite retains the Keggin-type polyoxometalates structure, exhibiting a high specific surface area that enhances photon capture efficiency. Analysis of UV-Vis DRS absorption band edge and band gap indicated that the composite was responsive to visible light. Photocatalytic degradation of Rhodamine B (RhB) by FePMo12 O40 @PVP was investigated under commonly used LED light source, demonstrating excellent photocatalytic performance as 2.5 g-FePMo12 O40 @PVP (0.015 g) can remove 83% of RhB (10 mg/L) in 40 min. The FePMo12 O40 @PVP composite material demonstrated sustained moderate degradation efficiency even after undergoing three cycles of repeated use. The non-covalent interaction and strong interfacial coupling between PVP and FePMo12 O40 promoted the transfer of h+ , and e− , ∙O2 − , ·OH, and h+ served as the primary active species in this photocatalytic system. This environmentally friendly material has the potential to significantly reduce energy consumption and offers valuable insights for the future treatment of dye wastewater. [ABSTRACT FROM AUTHOR]- Published
- 2024
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