Green methods using discarded fruit and vegetable waste are a safer alternative for the synthesis of metal nanoparticles, due to their simplicity, low cost and ecofriendly nature. In this investigation, the bioactive constituents of Nephelium Lappaceum L. (Rambutan) peel extract were effectively used as reducer to synthesize gold nanoflowers (AuNFs) and attempted to convert fruit waste into a valuable product. A quick and simple synthesis of bluish-purple color AuNFs was observed to occur with a plasmonic resonance band, λ_max around 563 nm. Transmission electron microscopy and dynamic light scattering analysis confirming the formation of clusters of gold nanoparticle similar to flowers/AuNFs with a size of 70–115 nm and each monodispersed nanoparticles has an average size of 11.6 ± 2.35 nm. Fourier transform infrared spectroscopy confirmed that the AuNFs were capped with hydroxyl (–OH) and carboxyl (–COOH) groups of rambutan peel. In addition, the resulting AuNFs showed catalytic activity for the reduction of 4-nitrophenol to 4-aminophenol (1.9089 × 10^-1 min⁻¹, R² = 0.969), efficiently. The suggested synthetic method is facile, sustainable, cost-effective and convenient for the development of value-added products in future nanotechnology products.

使用废弃水果和蔬菜废料的绿色方法是合成金属纳米粒子的更安全的替代方法，因为它们简单、成本低且环境友好。在这项研究中，Nephelium Lappaceum L. (Rambutan) 果皮提取物的生物活性成分被有效地用作合成金纳米花 (AuNFs) 的还原剂，并试图将水果废物转化为有价值的产品。观察到蓝紫色 AuNF 的快速简单合成发生在等离子体共振带 λ _max 大约 563 纳米。透射电子显微镜和动态光散射分析证实形成了类似于花/AuNFs 的金纳米粒子簇，其大小为 70-115 nm，每个单分散纳米粒子的平均大小为 11.6 ± 2.35 nm。傅里叶变换红外光谱证实，AuNFs 被红毛丹果皮的羟基 (-OH) 和羧基 (-COOH) 封端。此外，所得的AuNFs显示出将4-硝基苯酚有效还原为4-氨基苯酚的催化活性（1.9089 × 10 ^-1 min ^-1，R ²  = 0.969）。所建议的合成方法简便、可持续、成本效益高且方便未来纳米技术产品中增值产品的开发。