Nanotechnology refers to technology that is apply at the nanoscale and has applications in the here and now. Unique physical and chemical properties of nanomaterials can make use for applications that benefit for society (Bhushan, 2017). Nanomaterials are vital role in manufacturing new device with a vast range of applications in the field of nanoelectronics, nanomedicine, biomaterials energy production, nano sensor and consumer products (Pawliszak et al., 2019). Green synthesis is process for production of nanomaterials through the biological substrates /extracts to explore their numerous applications. Green synthesis methods are producing nanomaterials with biocompatibility and highly stable. (Namvar et al., 2021). It is a simple, environmentally friendly and single step. Bio molecules such as enzymes, proteins, amines, phenolic compounds, pigments and alkaloids are involved in fabrication of nanomaterials by reduction method (Nadaroglu et al., 2017). Green synthesis approach is offering safety, reliability, scalability, controllable particle size distribution, simplicity, and inexpensive technology during the production of nanomaterials (Shafiei et al., 2021). Nanoparticle have the ability to improve a wide range of agricultural, environmental, and forestry problems.
Silica nanomaterials are immensely stable and less toxic (Jeelani et al., 2020). Silica nanomaterials have unique characters such as high surface area, stability, biocompatibility and surface reactivity. Hence, silica nanoparticles have been used in various applications in drug delivery, optical imaging agents, sensor field, medical field and agriculture (Karande et al., 2021). Several researchers are focused on production/fabrication of silica nanomaterials by green synthetic protocols that utilize the medicinal plants (Babu et al., 2018), agriculture waste (Vaseashta and Kavaz, 2020), industrial waste (Yadav and Fulekar, 2019), etc. The green synthesis of silica nanomaterials is vital area of research having significant potential for further forthcoming developments. Silica is not important for the survival of plants, but it required to adapt the plants under different biotic and abiotic stress conditions (Rajiv et al., 2020). Silica nanomaterials can be employed as transport agents for agrochemicals, proteins and nucleotides. The silica nanoparticles are enhancing the soil water retention and soil monitoring in agriculture sector (Rastogi et al., 2019).
P. emblica L. (Indian gooseberry) has various pharmacological properties, that is widely employed in traditional medicine in different countries. Several research reports determined that fruit, leaves and barks of P. emblica contain the huge amounts of phenolic compounds (Arun et al., 2018). Hence, P. emblica shows the better anti-microbial, anti-cancer, hypolipidemic, anti-inflammatory, and hypoglycemic activity. It has excellent reactive oxygen species (ROS) scavenging activities.
Hereby, this present research work aimed to synthesis of silica nanoparticles by a facile and green method. It is expected that this technology will minimize the toxicity to environment. Additionally, to assess the chemical composition, microstructure, chemical bonding, crystalline nature, stability and zeta potential for as- synthesized silica nanomaterials by suitable characterization methods. Moreover, the toxicity of synthesized silica nanomaterials was determined using the seed germination assay.