海洋废弃物来源的壳聚糖（CS）用于合成纳米材料被认为是一种有效的生物废物管理和回收功能性产品的途径之一。在此，我们光化学合成了CS包覆的银纳米颗粒（Ag NPs-CS），具有潜在的抗癌和染料污染物吸附性能。为了获得CS，对虾壳废弃物经历了一系列的标准脱矿物质、去蛋白化和脱乙酰化过程。电子吸收峰（400 nm）表示Ag NPs表面等离子共振以及与CS相关的红外峰（3364 cm-1为OH/NH2，2932 cm-1为CH，1647 cm-1为-CO）证实了CS-Ag NPs的形成。Ag NPs-CS对人类肺腺癌细胞株（A549）显示出抗癌活性，最大细胞死亡浓度为20 μg/mL，分别为20％和52％。水溶性Ag NPs-CS（100 μg/mL）将混合染料目标溶液（25 mg/mL，含等体积阳离子染料亚甲基蓝和罗丹明B以及阴离子染料甲基橙）降解≥95％。因此，这些结果表明虾壳废弃物来源的CS可以用于合成具有潜在生物医学和环境应用的CS-Ag NPs。 版权所有 © 2023。Elsevier B.V.出版。

The use of marine waste derived chitosan (CS) for the synthesis of nanomaterials is considered as one of the effective routes for bio-waste management and recovering functional products. Herein, CS capped silver nanoparticles (Ag NPs-CS) with potential anticancer and dye pollutants adoption properties have been synthesized photochemically under direct sunlight. To obtain, CS, shrimp shell waste was subjected to a serious of standard demineralization, deproteinization and deacetylation processes. The electronic absorption peak (400 nm) denoting surface plasmonic resonance of Ag NPs and infrared peaks relevant to CS (3364 cm-1 of OH/NH2, 2932 cm-1 of CH, and 1647 cm-1 of -CO) exhibited peaks confirmed the formation of CS-Ag NPs. Ag NPs-CS exhibited anticancer activity against Human lung adenocarcinoma cell lines (A549), the maximum cell death noticed at the concentration of 20 μg/mL and 70 μg/mL was 20 and 52 %, respectively. An aqueous Ag NPs-CS (100 μg/mL) was degraded ≥95 % of mixed dye target solution (25 mg/mL) containing equal volume of cationic dye (Methylene blue and Rhodamine B) and anionic dye (methyl orange). Therefore, these findings suggest that the shrimp shell waste derived CS can be used for the synthesis of CS-Ag NPs with potential biomedical and environmental applications.Copyright © 2023. Published by Elsevier B.V.