Green Synthesis and Catalytic Activity of Silver Nanoparticles Based on Piper chaba Stem Extracts

Abstract

A green synthesis of silver nanoparticles (AgNPs) was conducted using the stem extract of Piper chaba, which is a plant abundantly growing in South and Southeast Asia. The synthesis was carried out at different reaction conditions, i.e., reaction temperature, concentrations of the extract and silver nitrate, reaction time, and pH. The synthesized AgNPs were characterized by visual observation, ultraviolet–visible (UV-vis) spectroscopy, dynamic light scattering (DLS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), x-ray diffraction (XRD), energy dispersive x-ray (EDX), and Fourier transform infrared (FTIR) spectroscopy. The characterization results revealed that AgNPs were uniformly dispersed and exhibited a moderate size distribution. They were mostly spherical crystals with face-centered cubic structures and an average size of 19 nm. The FTIR spectroscopy and DLS analysis indicated that the phytochemicals capping the surface of AgNPs stabilize the dispersion through anionic repulsion. The synthesized AgNPs effectively catalyzed the reduction of 4-nitrophenol (4-NP) and degradation of methylene blue (MB) in the presence of sodium borohydride.

Biosynthesis and Characterization of Silver Nanoparticles produced by Phormidium ambiguum and Desertifilum tharense

“…9A) showed five main peaks of 32.19°, 38.089°, 44.2567°, 64.4547° and 77.4727° corresponding to (101), ( 111), ( 200), ( 220) and (311) lattice planes, respectively which were indexed in Joint Committee on Powder Diffraction Standards (JCPDS) file no. 84-0713 and 04-0783 as reported by Mahiuddin et al (2020). Similar diffraction peaks were identified for Phormidium ambiguum Ag-NPs (Fig.…”

“…Strong absorption peak at 3450 cm -1 assigned to O-H stretching vibration of polysaccharides, and N-H stretching vibration of proteins. This indicates the polysaccharides and proteins found in extracellular extract may play role in synthesis of Ag-NPs (Hamida et al, 2020;Mahiuddin et al, 2020). Also, the polysaccharides and proteins, as organic capping agents, may contribute in particles stabilization.…”

“…Jena et al (2013) reported that the capping peptide can bind to nanoparticles by free amino groups or by different residues inside the proteins. The peak around 1634 cm -1 attributed to stretching vibration of C=O in amides (Mahiuddin et al, 2020). The peak at 428 cm -1 is related to binding Ag-NPs with oxygen from hydroxyl groups (AL-Katib et al, 2015).…”

Transcriptome Profile Alterations with Carbon Nanotubes, Quantum Dots, and Silver Nanoparticles: A Review

“…While silver is found in many daily activities, AgNP production and application have potentially toxic effects to both the environment [ 55 ] and the human population. Recently, “green” synthesis of AgNP using plants and microorganisms has been explored as an eco-friendly alternative ( Table S3 ) [ 55 , 56 , 57 , 58 , 59 ]. In humans, AgNP exposure has been linked to disrupting the function of mitochondria, sperm cells, and cytokine expression [ 47 ].…”

Novel Pt-Ag3PO4/CdS/Chitosan Nanocomposite with Enhanced Photocatalytic and Biological Activities

“…Environmental inorganic and organic pollution, created by industries, is a primary concern for human-race and public health because of contaminated foods and waters. Consequently, there is a necessity for industrial-active components and nanomaterials with low cytotoxicity towards different cell lines, for removing the presence of pollutants via dual-functioning nanomaterials [8,9]. There are several potentially toxic and often drug-resistant microorganisms in the environment.…”