Controllable Synthesis, Photocatalytic Property, and Mechanism of a Novel POM-Based Direct Z-Scheme Nano-Heterojunction α-Fe2O3/P2Mo18

Abstract

In order to improve photocatalytic activity and maximize solar energy use, a new composite material Fe2O3/P2Mo18 was prepared by combining polyoxometalates (P2Mo18) with Fe2O3 nanosheets. FT-IR, XRD, XPS, SEM, TEM, UV-vis, EIS, and PL were used to characterize the composite material, and nano-Fe2O3 of different sizes and morphologies with a controllable absorption range was prepared by adjusting the reaction time, and, when combined with P2Mo18, a composite photocatalyst with efficient visible light response and photocatalytic activity was constructed. The EIS, Bode, and PL spectra analysis results show that the Fe2O3/P2Mo18 composite material has outstanding interfacial charge transfer efficiency and potential photocatalytic application possibilities. Model reactions of methylene blue (MB) and Cr (VI) photodegradation were used to evaluate the redox activity of Fe2O3/P2Mo18 composites under simulated visible light. The photocatalytic degradation rate was as high as 98.98% for MB and 96.86% for Cr (VI) when the composite ratio was Fe2O3/P2Mo18-5%. This research opens up a new avenue for the development of high-performance photocatalysts.

Decontamination of methylene blue from aqueous media using alginate‐bonded polyacrylamide/carbon black nanocomposite hydrogel

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Assessing the Performance of Transition Metals (M = Hf, Ti, and Zr) Decorated Silicon Carbide Nanotubes (M@SiCNTs) for Hydrogen Storage Applications: Insights from Theoretical Calculations

“…Molecular electrostatic potential (MESP) analysis was employed to describe regions of charge density accumulation. 31 Molecular orbital and QTAIM BCP isosurfaces were visualized using VMD software, 32 while Origin software facilitated the visualization of the density of states (DOS). 33 Chemcraft 1.8 was utilized to present the structural geometry, including bond lengths, bond angles, and the distance of hydrogen molecule adsorption.…”

Study of Cation Distribution and Photocatalytic Activity of Nonthermal Plasma-Modified NiZnFe2O4 Magnetic Nanocomposites

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