Department of Chemical Engineering, Urmia university of Technology, Urmia, Iran.
Department of Veterinary Medicine, Medicinal Plant Center of Barij, Km. 5 Mashhad-Ardehal, 87135-1187 Kashan, Iran.
Int J Biol Macromol. 2020 Dec 1;164:4138-4145. doi: 10.1016/j.ijbiomac.2020.09.015. Epub 2020 Sep 4.
The application of nano materials for removal and detection of hazardous metal detection with nanoparticles is important for researcher. In this paper, the silver-manganese disulfide/chitosan-polyvinyl alcohol (Ag-MnS/CSPVA) nanocomposites was prepared for the detection of toxic heavy metal. The synthesized nano materials was experimented through the various analysis methods to structural and morphological evaluation. The surface charge of the Ag-MnS/CSPVA was -25.0 ± 0.1 mV. The various metal ions have not effect on detection of mercury (II). The result shows the excellent linearity was found the mercury concentrations changing with limit of detection of 9.0 nM (nano molar level). The condition of detection was conducted at pH 5 and room temperature. Moreover, the photocatalytic properties of the Ag-MnS/CSPVA nanocomposites was analyzed for degradation of malachite green under visible light irradiation. The complete malachite green degradation reached up to 97.29% after 30 min of photocatalytic reaction. The antibacterial efficiency was studied versus both Escherichia coli and Staphylococcus aureus bacteria. The outcome depicts that the Ag-MnS/CSPVA nanocomposites has an excellent property in antibacterial activity.
纳米材料在有害金属检测中的应用对于研究人员来说非常重要。本文制备了银-锰二硫化物/壳聚糖-聚乙烯醇（Ag-MnS/CSPVA）纳米复合材料，用于检测有毒重金属。通过各种分析方法对合成的纳米材料进行了结构和形态评价。Ag-MnS/CSPVA 的表面电荷为-25.0±0.1 mV。各种金属离子对汞（II）的检测没有影响。结果表明，在 pH 5 和室温下检测条件下，随着检测限为 9.0 nM（纳摩尔级）的汞浓度变化，发现了优异的线性关系。此外，还分析了 Ag-MnS/CSPVA 纳米复合材料在可见光照射下对孔雀石绿的光催化性能。在 30 分钟的光催化反应后，孔雀石绿的完全降解达到了 97.29%。研究了其对大肠杆菌和金黄色葡萄球菌的抗菌效率。结果表明，Ag-MnS/CSPVA 纳米复合材料具有优异的抗菌活性。
