Jhanani G K, Albeshr Mohammed F, Alrefaei Abdulwahed Fahad
Institute of Technology and Business in České Budějovice, Faculty of Technology, České Budějovice, Czech Republic.
Department of Zoology, College of Sciences, King Saud University, P.O. Box. 2455, Riyadh, 11451, Saudi Arabia.
Chemosphere. 2023 Dec;343:140075. doi: 10.1016/j.chemosphere.2023.140075. Epub 2023 Sep 5.
In this study, a trimetallic nanocomposite comprising Silver Copper-Nickel (Ag-Cu-Ni TNC) was synthesized and analysed for its efficiency in degrading benzene and benzopyrene, which has five fused benzene rings. Fabrication of trimetallic nanocomposites were characterized using UV spectroscopy, FTIR studies, SEM EDAX, and DLS results. XRD confirmed the cubic crystalline Fcc structure of Ag-Cu-Ni TNC. Photocatalytic degradation analysis revealed that Ag-Cu-Ni TNC has the efficient photocatalytic ability, and the optimum condition required for efficient degradation of benzene and benzopyrene was identified as 2 μg/mL of PAH molecule, 10 μg/mL of Ag-Cu-Ni TNC at pH 5, stirring time of 2 h placed under UV light. Based on these optimum conditions, kinetic and isotherm studies were performed, revealing that the adsorption of benzene and benzopyrene by Ag-Cu-Ni TNC fits well with the Pseudo-second order kinetic model and Freundlich isotherm model. Thus, our study's adsorption of PAH molecule from aqueous solution takes place through chemisorption and involves heterogeneous adsorption phenomena.
在本研究中，合成了一种包含银铜镍（Ag-Cu-Ni TNC）的三金属纳米复合材料，并分析了其降解苯和具有五个稠合苯环的苯并芘的效率。使用紫外光谱、傅里叶变换红外光谱研究、扫描电子显微镜能谱分析和动态光散射结果对三金属纳米复合材料的制备进行了表征。X射线衍射证实了Ag-Cu-Ni TNC的立方晶体面心立方结构。光催化降解分析表明，Ag-Cu-Ni TNC具有高效的光催化能力，苯和苯并芘高效降解所需的最佳条件确定为：PAH分子浓度为2μg/mL，Ag-Cu-Ni TNC浓度为10μg/mL，pH值为5，在紫外光下搅拌2小时。基于这些最佳条件，进行了动力学和等温线研究，结果表明，Ag-Cu-Ni TNC对苯和苯并芘的吸附符合准二级动力学模型和弗伦德利希等温线模型。因此，我们的研究表明，从水溶液中吸附PAH分子是通过化学吸附进行的，并且涉及非均相吸附现象。
