In the current study, we have built up a novel, green approach technique for the synthesis of silver nanoparticles (Ag NPs) from Rauvolfia tetraphylla leaves extract. The synthesized nanoparticles were thoroughly characterized using different analytical techniques like X-ray diffraction, Fourier transform infrared spectroscopy, UV-Vis spectroscopy (UV-Vis), scanning electron microscopy, energy-dispersive X-ray spectroscopy and transmission electron microscope analysis. It is confirmed as a cubic phase with average particle size about 40 nm with a spherical shape. Further, the characterized material was inspected for the photocatalytic degradation of most common environmental pollutants (carcinogenic organic dyes) like Methylene blue (M.B), Rhodamine B (Rh. B) and Rose bengal (R.B) with degradation efficiency of 81, 55 and 80% respectively. In addition, it was examined by optical property (photoluminescence) with blue emission by the excitation at 370 to 400 nm, which is useful for blue LEDs (light emitting diode). Furthermore, it also shows the superior anti-bacterial activity against gram-positive bacterias such as Pseudomonas aeruginosa, Escherichia coli and Klebsiella aerogenes and gram-negative bacteria Staphylococcus aureus. Ag NPs synthesized using Rauvolfia tetraphylla leaf extract exhibited a good photocatalytic and antibacterial activity. Hence, it's a first to report the synthesis of Ag NPs using natural reducing agent Rauvolfia tetraphylla leaf extract for Luminescence and Dye degradation applications.

Silver nanoparticles (Ag NPs) was synthesized by green synthesis method using Ixora coccinea leaves extract as fuel. The structure and morphology of the product were characterized by Powder X-ray Diffraction, UV-Visible spectroscopy, Scanning Electron Microscopy and Transmission Electron Microscopy. The nanoparticles (NPs) were subjected to photocatalytic and antimicrobial studies. PXRD pattern demonstrates that the formed product belongs to the cubic crystal system. SEM images show that the particles are agglomerated to form spherical like structure and the average crystallite sizes were found to be 20nm. The prepared Ag NPs exhibit excellent photocatalytic activity for the photodegradation of methylene blue (MB) indicating that the Ag NPs are potential photocatalytic semiconductor materials. Ag NPs exhibit significant bactericidal activity against gram-positive (Pseudomonas aeruginosa, Escherichia coli and Klebsiella aerogenes) and gram-negative (Staphylococcus aureus) bacteria using the disc diffusion method. The study successfully demonstrates the synthesis of Ag NPs by simple eco-friendly route employing Ixora coccinea as a fuel that exhibits superior Photodegradative and antibacterial activities.