Green Synthesis of Metallic Nanoparticles

Gold nanostructures of various sizes and morphologies were synthesized at room temperature using naturally occurring biodegradable plant surfactants [ 76]. The sizes and shapes (spherical, prisms, and hexagonal) of the synthesized nanopartides were dependent on the concentration of the gold ions and the type of plant surfactant used for preparation. 

Metallic nanoparticles have been synthesized in vivo using plants. Intracellular synthesis of gold nanopartides was demonstrated using the sweet desert willow (Chilopsis linearis) plant [95]. The average size of Au nanopartides formed in various tissues was dependent on the concentration of Au in the respective tissues. Haver-kamp et al. [96] synthesized a gold-silver-copper alloy in vivo using the Brasskajuncea plant. 

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Plant mediated green synthesis of metallic nanoparticles challenges and opportunities... 

Virkutyte J. and Varma R. S. (2011). Green synthesis of metal nanoparticles Biodegradable polymers and enzymes in stabilization and surface functionalization. Chemical Science, 2(5), 837-846. 

Green Synthesis Of Different Transition Metal Oxide Nanoparticles Potential Catalysts For Removal Of Organic Colorants From Water... 

In summary, an overview of the use of microorganisms such as bacteria, yeasts, algae, fungi, and actinomycetes in the biosynthesis of metal nanoparticles has been described. As can be seen from the above, the use of microorganisms in the synthesis of nanoparticles is a new and exciting area of research with considerable potential for green development. 

This chapter unearthed a brief overview of the current research activities about the transition metal nanoparticles synthesized by marine microbial sources followed by discussions of green synthesis of nanoparticles. The chapter concluded on the marine microbial sources in the preparation of transition metallic nanoparticles and also applications toward various biological activities which can facilitate researchers to work on marine microbial preparations of nanoparticles in the future. There has been superior development updated in the field of microorganism-mediated transition metal nanoparticle synthesis and various apphcation fields like biological systems, medicinal properties etc., even though much more work is needed for green synthesis of nanoparticles using several microbial sources which remain... 

Raveendran, R, Fu,J., et al. Completely Green Synthesis and Stabilization of Metal Nanoparticles. Joumal of the American Chemical Society,125(46), 13940-13941 (2003). 

Yu P, Qian Q, Wang X, Cheng H, Ohsaka T, Mao L (2010) Potential-controllable green synthesis and deposition of metal nanoparticles with electrochemical method. J Mater Chem 20 5820-5822... 

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