Herein, an approach was carried out toward in situ synthesis of chitosan-mediated silver (Ag) nanoparticles (AgNPs) on merino wool fabrics (MWFs) and its utilization as colored textile, antibacterial material and removable substrate after toxic dye reduction. The investigation on the as-produced products (AgNPs@MWFs) indicates that AgNPs were successfully assembled on the MWF surface through efficient interaction between the wool and chitosan terminals with nanoparticles. The AgNPs@MWFs revealed three primary colors (red, yellow and blue) with a brilliant shade due to the localized surface plasmon resonance properties of metal nanoparticles. The colorfastness and color strength (K/S) values were found to be as significant as those of traditional dyes. The tensile properties of the MWFs, such as strength and elongation at break, were measured before and after in situ synthesis of AgNPs and were found improved compared with those of the control samples. The antibacterial performance was also noticed to be excellent with ∼99% bacterial reduction after five consecutive standard washes. Afterward, AgNPs@MWFs coupled with sodium borohydride (NaBH₄) were used for azo-containing wastewater treatment. Higher than 90% azo-dye degradation by 30 min was found, which was six times faster than that of the control sample.

中文翻译：

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通过AgNPs进行羊毛功能化：着色，抗菌和废水处理

在本文中，进行了一种在美利奴羊毛织物（MWFs）上原位合成壳聚糖介导的银（Ag）纳米粒子（AgNPs）的方法，并在有毒染料还原后将其用作有色纺织品，抗菌材料和可移动基材。对所生产产品（AgNPs @ MWFs）的研究表明，AgNPs通过羊毛和壳聚糖末端与纳米粒子之间的有效相互作用而成功地组装在MWF表面上。由于金属纳米粒子的局部表面等离振子共振特性，AgNPs @ MWFs表现出三种鲜艳的原色（红色，黄色和蓝色）。色牢度和色强度（K / S发现）值与传统染料一样重要。在原位合成AgNPs之前和之后测量MWF的拉伸性能，例如强度和断裂伸长率，发现与对照样品相比，这些拉伸性能得到了改善。在连续五次标准洗涤后，还发现抗菌性能优异，可减少约99％的细菌。然后，将AgNPs @ MWFs与硼氢化钠（NaBH ₄）结合用于含偶氮废水处理。在30分钟内发现高于90％的偶氮染料降解，比对照样品快六倍。