V/Zn Incorporated-MCM-41: Synthesis, Characterization and Visible Light Photocatalytic Activity for Tetracycline Degradation

Journal of Inorganic and Organometallic Polymers and Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 22, 2025

Abstract Water pollution by pharmaceutical pollutants such as antibiotics represents a serious environmental crisis which is rising day day. So, the development of new efficient visible light photocatalysts has long been imperative to address water pollution. In this study, zinc/vanadium (Zn/V) incorporated MCM-41 (Mobil Composition Matter No. 41) (ZVM) successfully synthesized using simple surfactant-coprecipitation assisted method and evaluated an photocatalyst for tetracycline (TC) fast degradation. The effects Zn/V metal cations’ synergistic effect on morphological, surface, optical, removal capability MCM-41-metal samples were explored. Compared pure silica, ZVM mesoporous material unveiled reduced pore diameter, thicker wall Brunauer-Emmett-Teller surface area (BETs) with still preserved ordered hexagonal structure. Scanning electron microscopy-transmission microscopy (SEM-TEM) analysis revealed significant morphological changes in upon incorporation. modification bandgap energy suggests applicability tailored solar photocatalysis applications. catalyst, containing 4 wt% each (Zn V), demonstrated exceptional performance degrading TC, achieving degradation efficiency 98.13% within just 25 min. resulting exhibited improved ion-exchange capacity, increased number active sites, optimized properties, leading significantly enhanced catalytic specific reactions. Additionally, possible photocatalytic mechanism TC over proposed involvement holes (h + ) hydroxyl radicals reactive species elucidated radical trapping experiments. These results demonstrate potential good recovery recyclability can be tool meet UNs’ SDG:6.

Language: Английский

Enhancement Study of the Photoactivity of TiO2 Photocatalysts during the Increase of the WO3 Ratio in the Presence of Ag Metal

Catalysts, Journal Year: 2024, Volume and Issue: 14(9), P. 633 - 633

Published: Sept. 18, 2024

Nanocomposites (NCs) consisting of 4%Ag/x%WO3/TiO2, with varied concentrations (x = 1, 3, 5, 7 wt.%) WO3, were successfully synthesized using the sol-gel process to examine their photocatalytic performance. The 4%Ag/x%WO3/TiO2 nanopowder was characterized X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission (TEM), UV–vis diffuse reflectance spectra (UV–vis DRS), photoluminescence (PL), and Brunauer–Emmett–Teller (BET) surface area analysis elucidate its physicochemical properties. evaluation revealed that Ag/1%WO3/TiO2 nanocomposite exhibits 98% photoreduction efficiency for Cr(VI) after 2 h under visible light due impact plasmonic effect Ag atoms. In addition, Ag/4%WO3/TiO2 shows about 95% photooxidation methylene blue (MB) dye 4 h.

Language: Английский

Effect of Fe/Co Double-Loaded ZnO Nanopowder on Magnetic and Dielectric Properties for Energy Storage and Spintronic Devices

Transactions on Electrical and Electronic Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 13, 2024

Language: Английский