| Autor: |
Das, Sangita, Sen, Bibaswan, Sarkar, Sudeshna, Das, Indrajit, Sepay, Nayim, Paul, Sayantani, Mandal, Supratim, Roy, Adhiraj, Malecka, Magdalena, Abbas, Sk Jahir, Gangavarapu, Ranga Rao, Vijayakumar, Badathala, Ali, Sk Imran |
| Zdroj: |
Inorganic Chemistry; September 2024, Vol. 63 Issue: 39 p18448-18467, 20p |
| Abstrakt: |
A multifunctional polyoxometalate-ionic liquid (POM-IL)–based hybrid material comprising silicotungstic acid, [BmIm]4[SiW12O40], has been synthesized and demonstrated its efficiency toward methylene blue removal and as an antibacterial agent. Single-crystal XRD analysis confirms that the material crystallizes in monoclinic symmetry (SG: Pn), with lattice parameters a= 13.1396(5) Å, b= 16.9655(8) Å, c= 14.3493(7) Å, and Z= 2. The structure comprises a single polyanionic [SiW12O40]4–moiety surrounded by four cationic [BmIm]+units of two different conformations, which supported DFT and Hirshfeld surface analysis. The material shows excellent removal efficiency for methylene blue, with a maximum adsorption capacity of 92.47 mg/g and 83.05% reusability after five cycles. On the contrary, FTIR and ζ–potential analyses confirm that electrostatic interactions are the predominant factors governing the adsorption process. The material also acts as a superior antibacterial agent against the opportunistic pathogens Pseudomonas aeruginosa, Klebsiella pneumoniae, and Escherichia coliwith a MIC of 500–700 μg/mL. However, a comparative assessment showed that the material was more effective against P. aeruginosacompared to the other two pathogens. PXRD analysis confirms the phase purity, and FESEM and TEM analyses exhibit block-shaped morphology with particle sizes ∼2–3 μm. |
| Databáze: |
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