• Kritigya Mishra
• Vijay Mishra
• Gahin De
• Ashish Suttee
• Pawan Kumar Gupta

The versatile family of nanoparticles is considered to have a huge effect in the various fields of material science primarily nanoelectronics, catalytic chemistry, targeted drug delivery and tissue engineering. As a result of their size and shape-dependent properties, metal nanoparticles are very attractive. Due to their unusual properties and exciting applications in photonics, electronics, biochemical sensing, and imaging, metal nanoparticles have garnered extensive attention. For the preparation of metallic nanoparticles, various approaches are used, which are classified into two main forms according to the starting material of nanoparticle preparation as bottom-up methods and top-down methods. In biomedicine and allied disciplines, the use of metal nanoparticles is continuously growing worldwide. Because of their noticeable properties, researchers are currently concentrating on metal nanoparticles, nanostructures and nanomaterial synthesis. This review selectively focuses on different methods of nanoparticle preparations by Top down and Bottom-up synthesis.

Gold Nanoparticle, Silver Nanoparticle, Top-Down Method, Bottom-Up Method

"Method of metallic nanoparticles synthesis", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 1, page no.53-58, January-2021, Available :http://www.jetir.org/papers/JETIR2101209.pdf

"Method of metallic nanoparticles synthesis", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 1, page no. pp53-58, January-2021, Available at : http://www.jetir.org/papers/JETIR2101209.pdf