It is an age of nanomaterials. Nanotechnology has revolutionized the scientific world. Every sphere of technology has benefited significantly by using nanomaterials. A number of physical and chemical methods are being used for the synthesis of nanomaterials. In recent years, much emphasis is placed on green synthesis, particularly by using plant extracts or microorganisms. This is useful for promoting environmental sustainability. Microwave heating and ultrasound techniques are also being used for the synthesis of different types of nanomaterials. Green synthesis is a more advanced method of synthesizing nanomaterials over other methods because of its simplicity, lower cost, and relatively higher reproducibility. Plants produce more stable nanoparticles compared to other means, and it is straightforward to scale up. The risk of contamination is also lower. In this article, different methods of green synthesis of nanomaterials and applications have been reviewed and discussed.

这是一个纳米材料的时代。纳米技术彻底改变了科学世界。通过使用纳米材料，每个技术领域都受益匪浅。许多物理和化学方法被用于合成纳米材料。近年来，人们非常重视绿色合成，特别是通过使用植物提取物或微生物。这有助于促进环境可持续性。微波加热和超声技术也被用于合成不同类型的纳米材料。绿色合成是一种比其他方法更先进的纳米材料合成方法，因为它简单、成本低、可重复性相对较高。与其他方式相比，植物会产生更稳定的纳米粒子，而且很容易扩大规模。污染的风险也较低。本文综述和讨论了纳米材料绿色合成的不同方法和应用。