The research work presented herein was undertaken with a view to develop, characterize and highlight modified cotton fabrics that acquire durable antibacterial activity in concomitant with high metal sorption capacity. The development is based on reacting cotton cellulose previously oxidized by sodium periodate-with 4 amino-1,2,4 triazole in presence and absence of silver nano particles (AgNPs). The idea behind the periodate pretreatment is to convert (via oxidative cleavge) the 2,3-vicinal diol of the anhydroglucose units of cotton into aldehyde groups. The latter are easily reacting with the triazole groups in the modified cotton.On the other hand AgNPs were fabricated as per the reduction method using bio-material extracted from the root of licorice. By virtue of its reducing action, the bio-material converts Ag⁺ ions to Ag^oo atom which is also stabilized Ag the bio-material in the form of cluster which is the agregate of about 5 Ag^oo. The clusters are cropped with the stabilizer thus forming silver nanoparticles.Measurement of the particle size displays a value of 8.7 nm.Charactrisation of triazole treated cotton fabrics reveals the presence of the triazole moieties inside the structure of cotton. Furthermore,Fabrictreated with triazole in presence and absence of AgNPs exhibits a relatively high antibacterial activity against gram-negative tested bacteria (E. coli) as compared to that of gram-positive tested bacteria (S. aureus). The metal sorption of triazole treated cotton fabrics was higher than those of untreated or periodate pretreated fabric due to the increase in nitrogen centers created along the cellulose chains. Experimental data were accomplished through Langmuir, Freundlich and Temkin sorption isotherm models. It was shown that sorption follows Langmuir isotherm model and suggests that the innovative fabric in question can adsorb metal ions from polluted dye bath.

中文翻译：

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通过在高碘酸盐预处理的棉花结构中引入氨基三唑部分和AgNPs，具有抗菌活性和金属吸收性的棉花良性发育

进行本文提出的研究工作是为了开发，表征和突出改性棉织物，该棉织物在获得持久的抗菌活性的同时还具有高的金属吸附能力。这种发展是基于在存在和不存在银纳米颗粒（AgNP）的情况下，将事先被高碘酸钠氧化的棉纤维素与4个氨基-1,2,4三唑反应的。高碘酸盐预处理的想法是将棉花的脱水葡萄糖单元的2,3-邻位二醇（通过氧化裂解）转化为醛基。后者易于与改性棉中的三唑基反应。另一方面，根据还原方法，使用从甘草根中提取的生物材料制备了AgNP。凭借其还原作用，该生物材料可转化Ag ⁺离子形成Ag ^oo原子，Ag ^oo原子也以团簇形式稳定了生物材料，Ag是大约5 Ag ^oo的聚集体。用稳定剂裁剪簇，从而形成银纳米颗粒。粒度测量显示为8.7 nm。三唑处理的棉织物的特性表明，三唑部分存在于棉结构中。此外，在存在和不存在AgNPs的情况下，用三唑处理的织物与革兰氏阳性被测细菌（金黄色葡萄球菌）相比具有相对较高的对革兰氏阴性被测细菌（E.coli）的抗菌活性。经三唑处理的棉织物的金属吸附性高于未处理或高碘酸盐预处理的织物，因为沿纤维素链产生的氮中心增加。实验数据通过Langmuir，Freundlich和Temkin吸附等温线模型完成。