It has been a research goal to develop macroscopic materials with an optimized surface structure to affix silver nanoparticles which could contaminate water and maximize their practical functions. Cellulose paper is a versatile biomass material valued for its abundance, low cost, biocompatibility, and natural composition. Until now, its potential application in water purification has not been adequately explored. In this study, gallic acid-modified silver nanoparticles (GA@AgNPs) were loaded onto commercial cellulose filter paper using a simple lipoic acid modification process (GA@AgNPs-LA-CP). Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD) were used to characterize the GA@AgNPs-LA-CP. The catalytic activity of the GA@AgNPs-LA-CP was evaluated by the reduction reaction of methylene blue (MB), Rhodamine B (RhB), and 4-nitrophenol (4-NP) with sodium borohydride (NaBH4). The GA@AgNPs-LA-CP exhibited excellent catalytic activity toward MB, RhB, and 4-NP, taking advantage of its high specific surface area generated by the cellulose fiber network structure. Interestingly, due to the electrostatic interactions between the cationic dyes and the GA@AgNPs, the as-prepared catalytic composite material serves as a better catalyst for MB and RhB, suggesting dual applications of the composite materials for organic wastewater treatment and the removal of harmful dyes. This implies that the immobilization of AgNPs on cellulose papers is an effective method and can be applied to efficient wastewater treatment applications.

中文翻译：

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高容量固定化Ag纳米颗粒用于制革废水催化应用的功能化纤维素纸的快速制备

研究的目标是开发具有优化表面结构的宏观材料，以附着可能污染水并最大化其实用功能的银纳米颗粒。纤维素纸是一种多功能生物质材料，因其丰富，低成本，生物相容性和天然成分而受到重视。迄今为止，尚未充分探索其在水净化中的潜在应用。在这项研究中，使用简单的硫辛酸修饰工艺（GA @ AgNPs-LA-CP）将没食子酸修饰的银纳米颗粒（GA @ AgNPs）装载到商业纤维素滤纸上。扫描电子显微镜（SEM），X射线光电子能谱（XPS）和X射线衍射（XRD）用来表征GA @ AgNPs-LA-CP。GA @ AgNPs-LA-CP的催化活性通过亚甲基蓝（MB）的还原反应进行评估，罗丹明B（RhB）和4-硝基苯酚（4-NP）与硼氢化钠（NaBH4）。GA @ AgNPs-LA-CP利用纤维素纤维网络结构产生的高比表面积，对MB，RhB和4-NP表现出优异的催化活性。有趣的是，由于阳离子染料与GA @ AgNPs之间的静电相互作用，所制备的催化复合材料可作为MB和RhB的较好催化剂，这表明该复合材料可用于有机废水处理和去除有害物质。染料。这意味着将AgNPs固定在纤维素纸上是一种有效的方法，可用于有效的废水处理应用。