Green synthesis of titanium dioxide nanoparticles using Phyllanthus niruri leaf extract and study on its structural, optical and morphological properties

2020 ◽  
Vol 26 ◽  
pp. 3531-3534 ◽  
Author(s):  
S. Shanavas ◽  
A. Priyadharsan ◽  
S. Karthikeyan ◽  
K. Dharmaboopathi ◽  
I. Ragavan ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Green Synthesis ◽  
Leaf Extract ◽  
Titanium Dioxide Nanoparticles ◽  
Morphological Properties ◽  
Phyllanthus Niruri

scholarly journals Facile Green Synthesis and Characterization of Titanium Dioxide Nanoparticles Using Kigelia africana (Lam) Benth., Aqueous Leaf Extract and its Antioxidant and Antibacterial Activity

2022 ◽  
Vol 34 (2) ◽  
pp. 409-414
Author(s):  
N. Usha Rani ◽  
P. Pavani ◽  
P.T.S.R.K. Prasad Rao
Keyword(s):  
Titanium Dioxide ◽  
Green Synthesis ◽  
Tio2 Nanoparticles ◽  
Leaf Extract ◽  
Titanium Dioxide Nanoparticles ◽  
Average Particle Size ◽  
Radical Scavenging ◽  
Average Particle ◽  
Absorption Bands ◽  
Aqueous Leaf Extract

Titanium nanoparticles are toxic to bacteria and have a widespread applications in different fields of research. Hence the present study aimed to synthesize the titanium dioxide nanoparticles by adopting green synthesis methodology using Kigelia africana leave extract as a biological reducing agent. The UV absorption spectra show characteristic absorption maxima corresponding to TiO2 nanoparticles at a wavelength of 512 nm confirms the formation of nanosized tin particles. The FT-IR spectrum of TiO2 nanoparticles show absorption bands at 3609 cm-1 and 3227 cm-1 corresponding to O-H stretching in alcoholic and carboxylic compounds, respectively. Absorption peaks at 1607, 2834, 1654 and 1324 cm-1 correspond to aromatic C=C vibrations, C-H stretching in aldehydes, C-H bending vibrations and aromatic C-N stretching vibrations, respectively. This confirms the involvement of bioactive compounds from the plant extract. The SEM and EDX studies confirmed that the nanoparticles are spherical to oval shape with an average particle size of 46 nm. The metal content in the nanoparticles was found to be 58.71%. The synthesized nanoparticles have potential growth inhibition activity against Gram-negative bacteria (Pseudomonas aeruginosa and Escherichia coli). The DPPH radical scavenging activity of the nanoparticles synthesized was compared with that of aqueous leaf extract and standard ascorbic acid and proved that the nanoparticles have enhanced activity than aqueous leaf extract. The IC50 of the leaf extract, nanoparticles and the standard was found to be 31.55, 75.82 and 84.95 μg/mL, respectively. Kigelia africana leaf is shown in this work to be a valuable bioagent in the biosynthesis of TiO2 nanoparticles with increased biological activity.

scholarly journals Green synthesis of titanium dioxide nanoparticles using Psidium guajava extract and its antibacterial and antioxidant properties

2014 ◽  
Vol 7 (12) ◽  
pp. 968-976 ◽  
Author(s):  
Thirunavukkarasu Santhoshkumar ◽  
Abdul Abdul Rahuman ◽  
Chidambaram Jayaseelan ◽  
Govindasamy Rajakumar ◽  
Sampath Marimuthu ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Green Synthesis ◽  
Titanium Dioxide Nanoparticles ◽  
Antioxidant Properties ◽  
Psidium Guajava

scholarly journals Phytosynthesis of Titanium Dioxide Nanoparticles Using King of Bitter Andrographis paniculata and Its Embryonic Toxicology Evaluation and Biomedical Potential

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
S. Rajeshkumar ◽  
J. Santhoshkumar ◽  
Leta Tesfaye Jule ◽  
Krishnaraj Ramaswamy
Keyword(s):  
Titanium Dioxide ◽  
Green Synthesis ◽  
Tio2 Nanoparticles ◽  
Titanium Dioxide Nanoparticles ◽  
Spherical Shape ◽  
Andrographis Paniculata ◽  
Potential Hazard ◽  
Average Size ◽  
Herbal Plant ◽  
Biomedical Potential

Phytosynthesis particles are the efficient activity of biomedical and environmental. In this present study, the green synthesis of titanium dioxide (TiO2) nanoparticles using the king of bitter herbal plant Andrographis paniculata was synthesized and characterized using XRD, SEM, HRTEM, AFM, and antimicrobial, antioxidant, and antidiabetic activities. The size of the particles HRTEM shows 50 nm, and SEM shows the spherical shape, which reveals the synthesis of TiO2 nanoparticles. XRD spectrum shows crystallinity of nanoparticles, and an average size is calculated about 22.97 nm. The phytosynthesis TiO2 shows the antioxidant and antidiabetic activities. Similarly, toxicity studies have demonstrated the hatching and viability LD 50 value of TiO2 250 μg/L. The current study’s findings suggested that phytosynthesis TiO2 using extract of Andrographis paniculata exposure to potential hazard factors to biomedical and environmental uses.

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.

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