• Dr. Richa Singh
• Bhumika B. Jain

Dyes are used in various industries and laboratories as coloring agents. However, their unregulated disposal in environment poses a major threat for human health, plants and ecological balance. Hence, novel strategies are required for efficient decolorization and degradation of these synthetic dyes. Silver nanoparticles (SNPs) exhibit an excellent catalytic activity in organic reactions. The present study deals with synthesis, optimization and nanocatalytic activity of SNPs. Here, we have synthesized SNPs by two ways: chemical reduction using trisodium citrate and biological synthesis using Murraya koenigii leaf extract. Reaction parameters, such as silver nitrate concentration and temperature affected the rate of synthesis and morphology of SNPs. The nanoparticles were roughly spherical and crystalline with face-centered cubic structure. We further compared their nanocatalytic activity with respect to dye decolorization and found that plant mediated SNPs exhibit faster decolorization of congo red and trypan blue as compared to chemically synthesized SNPs. This is the first study to compare chemical and biological nanosilver for dye decolorization catalysis.

silver nanoparticles, nanocatalyst, congo red, trypan blue

"Catalytic Activity Of Chemical And Biological Nanosilver: A Comparative Study", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 5, page no.243-253, May-2018, Available :http://www.jetir.org/papers/JETIR1805465.pdf

"Catalytic Activity Of Chemical And Biological Nanosilver: A Comparative Study", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 5, page no. pp243-253, May-2018, Available at : http://www.jetir.org/papers/JETIR1805465.pdf