Journal of Nanoparticle Research ( IF 2.1 ) Pub Date : 2021-08-06 , DOI: 10.1007/s11051-021-05291-5 Devendra Kumar 1 , Rudramani Tiwari 1 , Rajiv Kumar Patel 1 , Pubali Adhikary 1 , S. Krishnamoorthi 1
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Herein, we have reported a new, efficient and one pot methodology for the synthesis of graphene coated silver nanoparticles (GCAgNPs) from an organosilver compound (Silver Acetylide) itself. Synthesis of (GCAgNPs) from silver acetylide has been carried out in anhydrous DMF at 150 °C and completed in 1.5 h. Appearance of surface plasmon resonance peak at 426 nm confirms the formation of silver nanoparticles. Presence of graphene over silver nanoparticle has been proved by UV–Vis (π-π* transition at 273 nm) and Raman spectrum (G and D band at 1586 and 1408 cm−1, respectively). TEM analysis of silver nanoparticles shows the formation of spherical shaped nanoparticles with agglomeration to variable extent. Four-point Probe methods has been applied for studying the electrical conductivity of the nanoparticles, which exhibit the conductivity of GCAgNPs to be 4.42 × 104 S/m. These GCAgNPs will find its application in various fields of photovoltaics.
Graphical abstract
中文翻译：
从乙炔银一锅法合成导电石墨烯包覆的银纳米粒子
在此，我们报道了一种新的、高效的、一次性的方法，用于从有机银化合物（Silver Acetylide）本身合成石墨烯涂覆的银纳米粒子（GCAgNPs）。由乙炔银合成（GCAgNPs）是在无水 DMF 中于 150 °C 进行的，并在 1.5 小时内完成。426 nm 处的表面等离子体共振峰的出现证实了银纳米颗粒的形成。UV-Vis（π-π *跃迁在 273 nm）和拉曼光谱（G 和 D 波段在 1586 和 1408 cm -1， 分别）。银纳米颗粒的 TEM 分析表明形成了具有不同程度团聚的球形纳米颗粒。四点探针方法已用于研究纳米颗粒的电导率，其表现出 GCAgNPs 的电导率为 4.42 × 10 4 S/m。这些 GCAgNPs 将在光伏的各个领域中得到应用。
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