Zheng Chenyi, Duan Lianghong, Wang Songsong, Wang Qiang, Wang Qinmeng, Guo Xueyi
School of Metallurgy and Environment, Central South University Changsha 410083 China
National & Regional Joint Engineering Research Centre of Nonferrous Metal Resources Recycling Changsha 410083 China.
RSC Adv. 2025 Apr 17;15(15):12009-12019. doi: 10.1039/d5ra00967g. eCollection 2025 Apr 9.
Silver nanoparticles (Ag NPs) possess unique physicochemical properties, making them valuable in various applications. The polyol reduction (PR) method is a prominent approach for synthesizing Ag NPs. However, traditional PR methods rely on Ag compounds like AgNO as feedstock to prepare precursor solution, which increases production time and costs. This study introduces a streamlined, eco-friendly technique to Ag NP synthesis PR. Low-cost metallic Ag serves as a feedstock, and electrochemical synthesis (ES) is employed to dissolve the metallic Ag in ethylene glycol (EG), generating a precursor solution for PR. Additives are added into the precursor solution, which is then heated to synthesize Ag NPs. By utilizing the additives and the temperature-dependent reducibility of EG, Ag nanowires and purified Ag NPs are synthesized from pure and crude-Ag precursors, respectively. The ES-PR method retains the advantages of the PR method while eliminating the need for Ag compounds in precursor preparation. Additionally, H gas is produced as a byproduct, offering further benefits. The ES-PR method has the potential to significantly simplify the synthesis of Ag NPs PR, facilitating the broader application of Ag NPs.
银纳米颗粒（Ag NPs）具有独特的物理化学性质，使其在各种应用中具有价值。多元醇还原（PR）法是合成Ag NPs的一种重要方法。然而，传统的PR方法依靠硝酸银等银化合物作为原料来制备前驱体溶液，这增加了生产时间和成本。本研究引入了一种简化的、环保的Ag NPs合成技术——PR法。低成本的金属银作为原料，并采用电化学合成（ES）法将金属银溶解在乙二醇（EG）中，生成用于PR的前驱体溶液。向前驱体溶液中添加添加剂，然后加热以合成Ag NPs。通过利用添加剂和EG的温度依赖性还原性，分别从纯银前驱体和粗银前驱体制备出银纳米线和纯化的Ag NPs。ES-PR法保留了PR法的优点，同时在前驱体制备过程中无需使用银化合物。此外，还会产生氢气作为副产物，带来更多益处。ES-PR法有可能显著简化Ag NPs的PR合成过程，促进Ag NPs的更广泛应用。
