The present study deals with the nanoparticles synthesis from Impatiens balsamina L. plant flower extract. The concentration of reducing agent (flower extract) and different temperature is involved in the reaction. Sixteen different silver nanoparticles were synthesized with using different ratios of the reaction mixture and different temperature. The different silver nanoparticles are different color based on the temperature and concentration of reaction mixture. The synthesized silver nanoparticles are characterized by UV/Vis Spectrophotometer. The microorganisms Bacillus subtilis are highly inhibited by (90:10/60oC; 99:1/70oC; 92:2/70oC; and 90:10/70oC) silver nanoparticles. Pseudomonas aeruginosa are highly inhibited by 98:2/50oC and 90:10/70oC based silver nanoparticles. The bacterial species Staphylococcus aureus are highly inhibited by 98:2/50oC and 98:2/70oC. The E. coli was inhibited by 99:1/70oC; 98:2/70oC and 90:10/70oC based silver nanoparticles. The temperature and concentration of reducing agents can play a significant role in controlling the growth of nanoparticles. This study is one of the evidence on temperature and concentration of reducing agents to control the nanoparticles growth and their microbial inhibitory efficacy
The present study deals with the isolation of embelin compound from Embelia ribes (Burm.f.). The isolated compounds were confirmed by UV/Vis spectrophotometer, 1H NMR and 13C NMR spectra. In absorption at 275nm in UV/Vis spectra, peak range at 5.7ppm in 1H NMR and peak value at 28.52, 29.35, 31.73ppm in 13C NMR to confirmed the isolated compound are embelin. This isolated compound used as a reducing agent for silver nanoparticles synthesis. The synthesized En-AgNPs were morphologically and structurally confirmed by UV/Vis spectrophotometer, FT-IR, SEM, EDAX, and XRD. The synthesized silver nanoparticles are spherical in shape with the size of <100nm. The embelin based silver nanoparticles used to degrade the toxic metal like mercury under solar light. The toxic metal mercury was degraded within 60 minutes by En-AgNPs under solar photo catalytic degradation.
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