scholarly journals Green synthesis of TiO 2 nanoparticles prepared from Phyllanthus niruri leaf extract for dye adsorption and their isotherm and kinetic studies

2021 ◽  
Vol 15 (2) ◽  
pp. 164-172
Author(s):  
Anitha Panneerselvam ◽  
Jeevanantham Velayutham ◽  
Sudha Ramasamy
Keyword(s):  
Green Synthesis ◽  
Leaf Extract ◽  
Dye Adsorption ◽  
Kinetic Studies ◽  
Phyllanthus Niruri

Green synthesis of iron oxide nanoparticles using the leaf extract of phyllanthus niruri

2020 ◽  
Vol 3 (3) ◽  
Author(s):  
Gowrimanohar N ◽  
Rosemary Michael
Keyword(s):  
Iron Oxide ◽  
Green Synthesis ◽  
Iron Oxide Nanoparticles ◽  
Environmental Remediation ◽  
Leaf Extract ◽  
Nano Particles ◽  
Oxide Nanoparticles ◽  
Average Crystalline Size ◽  
Phyllanthus Niruri ◽  
Synthesis Of Nanoparticles

In recent years, nanotechnology has emerged as a start-of-the-art, with multifarious applications in a wide array of fields. Studies on green synthesis of nanoparticles moves forward these days. The present work involves the green method of synthesizing Iron oxide nanoparticles [Fe2O3] by Phyllanthus Niruri leaf extract and NaOH which acts as a precipitating agent. Furthermore, the green synthesized Iron oxide nanoparticles were characterized and its antibacterial activity was investigated. As this plant extract is more beneficial, it is energy efficient, low cost and environmentally friendly process than the biohazardous chemical synthesis. Iron oxide nano particles are gaining importance for their uses in environmental remediation technologies. The characterization of nano particles includes the IR, UV-Vis, and Size determination using SEM and XRD. The average crystalline size of the iron oxide nanoparticles was calculated by Debye’s Scherrer formula,d = 12.34nm. The analytical studies revealed that the synthesized Iron oxide nanoparticles almost have the identical size and morphology. Thus, the above studies concluded, the synthesized material was Iron oxide nanoparticles.

scholarly journals Green synthesis of magnetic α–Fe2O3 nanospheres using Bridelia retusa leaf extract for Fenton-like degradation of crystal violet dye

2021 ◽  
Author(s):  
Raja Selvaraj ◽  
Shraddha Pai ◽  
Gokulakrishnan Murugesan ◽  
Sadanand Pandey ◽  
Ruchi Bhole ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Green Synthesis ◽  
Crystal Violet ◽  
Leaf Extract ◽  
Bet Analysis ◽  
Crystal Violet Dye ◽  
Pros And Cons ◽  
Manufacturing Techniques ◽  
The Stability ◽  
Bridelia Retusa

AbstractThe reach of nanotechnology has permeated into a range of disciplines and systematically revolutionized many manufacturing techniques. Today, nanoparticles are fabricated using varied approaches, each with its pros and cons. Of them, the green synthesis approach has been very effective in terms of overall economics and the stability of nanoparticles. The current study investigates the use of the leaf extract of Bridelia retusa for the synthesis of iron oxide nanoparticles. Typical of these nanoparticles, no specific peak was discernible on employing UV–visible spectroscopy. The size, morphological features, and crystallinity of the nanoparticles were determined by employing scanning electron microscopy and electron diffraction spectroscopy. Almost uniformly sized at 38.58 nm, the nanoparticles were spherical, constituting elemental iron at 11.5% and elemental oxygen at 59%. Their relative composition confirmed the nanoparticles to be iron oxide. X-ray diffraction studies showed the particles to be hexagonal and rhombohedral, estimating the crystallite size at 24.27 nm. BET analysis put the pore volume at 0.1198 cm3/g and pore diameter at 7.92 nm. The unique feature of the nanoparticles was that the specific surface area was 75.19 m2/g, which is more than 12 times higher than commercial α-Fe2O3. The participation of a variety of biochemicals in the leaf extract towards the reduction-cum-stabilization was confirmed using FTIR analysis. The Fenton-like catalytic activity of the nanoparticles was put to test by attempting to degrade crystal violet dye, which was completely achieved in 270 min. The kinetics of the degradation was also modelled in the study.

scholarly journals Correction to ‘Investigation on preferably oriented abnormal growth of CdSe nanorods along (0002) plane synthesized by henna leaf extract-mediated green synthesis’

2018 ◽  
Vol 5 (6) ◽  
pp. 180819 ◽  
Author(s):  
P. Iyyappa Rajan ◽  
J. Judith Vijaya ◽  
S. K. Jesudoss ◽  
K. Kaviyarasu ◽  
Seung-Cheol Lee ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Leaf Extract ◽  
Abnormal Growth ◽  
Cdse Nanorods
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