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synthesis of al<sub>2sub>s<sub>3sub>/mos<sub>2sub> Nanocomposite by Electrochemical Method: Correlation for Photodegradation of Trichloroacetic Acid, Chloroacetic Acid, Acetic Acid and study of Antibacterial Efficiency

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Modern Research in Catalysis 2023年第1期12卷 1-24页

作者： Hiremarali sathyanarayana sindhushree Kodenakoppalu Mahadevappa Chaithra Rayapura Thimmegowda Radhika Bellale Marigowda Venkatesha Department of Chemistry Yuvaraja’s College University of Mysore Mysuru India Department of Chemistry Maharani’s Science College for Women Mysuru India

al2s3/mos2 nanocomposite has been synthesized through electrochemical method and characterized by UV-Visible spectroscopy, XRD, sEM and EDAX data. UV-Visible spectroscopy measurements reveal that the al2s3/mos2 nanoco... 详细信息

alsub>2sub>ssub>3sub>/mossub>2sub> nanocomposite has been synthesized through electrochemical method and characterized by UV-Visible spectroscopy, XRD, sEM and EDAX data. UV-Visible spectroscopy measurements reveal that the alsub>2sub>ssub>3sub>/mossub>2sub> nanocomposite has maximum absorption at 353.04 nm and this peak position reflects the band gap of particles and it is found to be 2.51 eV which was calculated using Tauc plot. X-Ray diffraction (XRD) reveals crystaline size to be 49.85 nm which was calculated using Williamson-Hall (W-H) plot method. Photocatalytic degradation of acetic acid, chloroacetic acid and trichloroacetic acid has been studied by volumetric method using NaOH solution. Photocatalytic degradation of chloroacetic acid and acetic acid follows first order kinetics. The photodegradation efficiency for alsub>2sub>ssub>3sub>/mossub>2sub> nanocomposite was found to be ≈97.8%. A Taft linear free energy relationship is noted for the catalysed reaction with ρ* = 0.233 and indicating electron withdrawing groups enhance the rate. An isokinetic relation is observed with β = 358 K indicating that enthalpy factor controls the reaction rate. The result of this paper suggests the possibility of degradation of organic compounds, industrial effluants and toxic organic compounds by photodegradation process by ecofriendly alsub>2sub>ssub>3sub>/ mossub>2sub>. The antibacterial activity of alsub>2sub>ssub>3sub>/mossub>2sub> nanocomposite was investigated. These particles were shown to have an effective bactericide.

关键词： Electrochemical Method al2s3/mos2 Nanoparticles Carboxylic Acids LFER Antibacterial Activity

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