Sustainable green synthesis of silver nanoparticles by using Rangoon creeper leaves extract and their spectral analysis and anti‐bacterial studies

Abstract

The plant-based biological molecules possess exceptionally controlled assembling properties to make them suitable in the synthesis of metal nanoparticles. In the present study, an efficient simple one-pot method was employed for the synthesis of silver nanoparticles (SNPs) from the Rangoon creeper (RC) aqueous leaf extract. Biomolecules present in the leaf extract play a significant role as reducing agent as well as capping agent in the formation of RC-SNPs. The formation of RC-SNPs was confirmed by using several analytical techniques such as Fourier-transform infrared spectroscopy and ultraviolet-visible spectrophotometer studies. The presence of a sharp surface plasmon resonance peak at 449 nm showed the formation of RC-SNPs. X-ray diffraction analysis showed the crystalline nature of the RC-SNPs with a face-centred cubic structure. Elemental analysis of RC-SNPs was done by using energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. The morphology of RC-SNPs was examined by transmission electron microscopy (TEM) in the nano range 12 nm, and thermogravimetric-differential thermal analysis demonstrated the mechanical strength of RC-SNPs at various temperatures. The authors' newly synthesised RC-SNPs exhibited significant anti-bacterial activity against Staphylococcus aureus and Escherichia coli.

In situ generation of silver and silver oxide nanoparticles on cotton fabrics using Tinospora cordifolia as bio reductant

“…The diversified applications of nanomaterials play an important role in day to day activities of human beings [1,2]. The nano sized materials are acting as bridge materials between macroscopic and microscopic materials with variety of functions [3]. Metal and metal oxide nanoparticles (MNPs & MONPs) have attracted many researchers for diversified applications [4,5].…”

Nanocomposite cellulose fabrics with in situ generated silver nanoparticles by bioreduction method

“…Of these, the peaks observed at 2h¼ 38.9 � , 45.7 � , 63.7 � , and 77.5 � belonged to the reflections from ( 111), (200), and (311) planes of AgNPs, respectively [22]. The other prominent peaks observed at 2h¼ 47.2 � , 55.4 � , and 66.6 � resulted from the reflections from (211), (220), and (222) planes of Ag 2 ONPs of the NCFs, respectively [22,23]. Thus, the NCFs had both in situ generated AgNPs and Ag 2 ONPs.…”

“…In order to observe these additional low-intensity peaks, the diffractogram of the NCF prepared using 5 mM source solution was expanded in the 2h ¼ 35 � -80 � range and is presented in Figure 6(d). From Figure 6(d), it can be observed that there are many low-intensity peaks in the expanded diffractogram of which, the prominent ones at 2h¼ 38.9 � , 45.7 � , 47.2 � , 55.4 � , 63.7 � , 66.6 � , and 77.5 � belong to AgNPs and Ag 2 O nanoparticles (Ag 2 ONPs) [22,23]. Of these, the peaks observed at 2h¼ 38.9 � , 45.7 � , 63.7 � , and 77.5 � belonged to the reflections from ( 111), (200), and (311) planes of AgNPs, respectively [22].…”

Salacia mulbarica leaf extract mediated synthesis of silver nanoparticles for antibacterial and ct‐DNA damage via releasing of reactive oxygen species

“…NMPs have been attractive applications in various fields including medical and pharmaceutical [1]. The earlier reports for the fabrication of NMPs used various plant extractions and transformation of bio‐materials; Prosopis Juliflora [2], Limonia acidissima [3], Tridax Procumbens [4], Moringa oleifera [5], Clerodendron serratum radix [6], Berberis vulgaris [7] and Terminalia Chebula [8]. The generation of nanomaterials is a part of bio‐nanotechnology by utilising bio‐molecules and other biodegradable polymers of plant materials.…”