Gold nanoparticles green synthesis

Philip, D. (2010) Green synthesis of gold and silver nanoparticles using Hibiscus rosa sinensis. Physica E, 42, 1417-1424. 

Engelbrekt, C., Sorensen, K.H., Zhang,J., Welinder, A.C., Jensen, P.S. and Ulstrup, J. (2009) Green synthesis of gold nanoparticles with starch-glucose and application in bioelectrochemistry. Journal of Materials Chemistry, 19, 7839-7847. 

Scheme 2 Schematic of a seed-mediated, surfactant-assisted gold nanorod synthesis. The small black dots represent Ag+ ions, the orange stars are CTAB molecules forming micelles, the yellow circles and green squares are AuCLf and AuC12 , respectively, forming complexes with the CTAB micelles. Freshly-prepared gold nanoparticle seeds are injected into the growth solution in the final step of the nanorod synthesis [166]. (Copyright 2008, American Chemical Society)...

Sudip, M., Sushma, V., Sujata, P., Ayan Kumar, B., Manika Pal, B., Bojja, S., et al., 2012. Green chemistry approach for the synthesis and stabilization of biocompatible gold nanoparticles and their potential applications in cancer therapy. Nanotechnology 23, 455103. 

This review approaches the preparation of gold and silver nanoparticles by employing green synthesis techniques instead of chemical and physical methods. This smdy will provide valuable information for the preparation and characterization of silver and gold nanoparticles and its present and future prospects and prospective constraints of techniques in industry. In addition, we have particularly emphasized the role of silver and gold nanoparticles with other materials and their biomedical applications. 

Advantages of plant-mediated green synthesis of gold and silver nanoparticles. 

MECHANISM OF GREEN SYNTHESIS OF GOLD AND SILVER NANOPARTICLES... 

The mechanism of green synthesis of gold and silver nanoparticles is due to the presence of polyphenol in plant extracts which is responsible for reduction of nanoparticles. The molecular mechanism which gives the antioxidant properties of gold and silver nanoparticles endorses reduction of Au ions to Au atoms and Ag ions to Ag atoms (Figure 6.8). This reduction takes place by abstraction of hydrogen because of the OH groups in the polyphenol... 

TEM analysis confirms the approximate shape, nanogram, and diameter (< 100 nm) after the bioreduction of green synthesis of gold and silver nanoparticles after 24 h. The shapes of some nanoparticles were roughly circular with smooth edges and... 

Chidambaram, J., Rajendiran, R., Abdul, A.R., Pachiappan, P., 2013. Green synthesis of gold nanoparticles using seed aqueous extract of Abelmoschus esculentus and its antifungal activity. Ind. Crops Prod. 45, 423—429. 

Ganesh Kumar, V., Dinesh Gokavarapu, S., Rajeswari, A., Stalin Dhas, T., Karthick, V., Zainab, K., et al., 2011. Facile green synthesis of gold nanoparticles using leaf extract of antidiabetic potent Cassia auriculata. Colloids Surf. B Biointerfaces 87 (1), 159—163. 

Parida, U.K., Biswal, S.K., Bindhani, B.K., 2014b. Green synthesis and characterization of gold nanoparticles study of its biological mechanism in human SUDHL-4 cell line. Adv. Biol. Chem. 4, 360-375. 

Philip, D., Unni, C., Aromal, S.A., Vidhu, V.K., 2011. Murraya koenigii leaf-assisted rapid green synthesis of silver and gold nanoparticles. Spectrochim. Acta A Mol. Biomol. Spectrosc. 78 (2), 899—904. 

FIGURE 2.4 Transmission electron microscopy image of gold nanoparticles prepared by a different method, showing various sizes and shapes. (Reprinted from Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, 73, Philip, Honey mediated green synthesis of gold nanoparticles, 650-653. Copyright 2009, with permission from Elsevier.)... 

Yan JK, Liu JL, Sun YJ, Tang S, Mo ZY, Liu YS. Green synthesis of biocompatible carboxylic curdlan-capped gold nanoparticles and its interaction with protein. Carbohydr Polym. 2015 6(117) 771-7. 

K. Layek, R. Chakravarti, M. Lakshmi Kantam, H. Maheswaran, A. Vinu, Green Chem. 2011,13,2878-2887. Nanocrystalline magnesium oxide stabilized gold nanoparticles an advanced nanotechnology based recyclable heterogeneous catalyst platform for the one-pot synthesis of propargylamines. 

M. Boominathan, N. Pugazhenthiran, M. Nagaraj, S. Muthusubramanian, S. Murugesan, N. Bhuvanesh, Nanoporous titania-supported gold nanoparticle-catalyzed green synthesis of 1,2,3-triazoles in aqueous medium, ACS Sustainable Chem. Eng. 1 (2013) 1405-1411. 

Wang, Z., Zhang, Q., Kuehner, D., Ivaska, A. Niu, L. (2008). Green synthesis of 1-2 nm gold nanoparticles stabilized by amine-terminated ionic liquid and their electrocatalytic activity in oxygen reduction. Green Chem. 10 907-909. 

H. Huang, X. Yang Synthesis of Polysaccharide-stabilized Gold and Silver Nanoparticles A Green Method, ""Carbohydrate Research 2004, v. 339, iss. 15,2627-2631. 

---