Synthesis of Uniform and High Density Silver Nanoparticles by using Peltophorum pterocarpum flower Extract

2014 ◽  
Vol 1584 ◽  
Author(s):  
Matheswaran BALAMURUGAN ◽  
Shanmugam SARAVANAN ◽  
Naoki OHTANI
Keyword(s):  
Silver Nanoparticles ◽  
Fourier Transform ◽  
Electron Microscope ◽  
Ultra Violet ◽  
Capping Agent ◽  
Nanosized Particles ◽  
Flower Extract ◽  
Transmission Electron ◽  
Vis Spectroscopy ◽  
Ft Ir

ABSTRACTSilver nanoparticle (AgNP) is one of the elegant material because its uses in various fields. In this study, AgNPs have been prepared by using Peltophorum pterocarpum (PP) flower extract as reducing and capping agent and aqueous silver nitrate (aq.AgNO3) as silver precursor. The synthesized nanoparticles were characterized using Ultra Violet - Visible (UV-Vis) spectroscopy, High Resolution Transmission Electron Microscope (HR-TEM) and Fourier Transform Infrared Spectroscopy (FT-IR), which reveals the formation of nanosized particles. The UV-Vis spectrum shows an absorption peak around 430nm. HR-TEM images of AgNPs with clear morphology and well dispersed prepared AgNPs.

Herbal-Loaded Multifunctional Nanocomposities as Nanocarrier for Cancer Therpy: Synthesis and Quality

2011 ◽  
Vol 311-313 ◽  
pp. 1625-1629 ◽  
Author(s):  
Chih Wei Chou ◽  
Sheng Yueh Chang ◽  
Yung Shiu Chen ◽  
Wu Chung Su ◽  
Te Hsing Wu
Keyword(s):  
Electron Microscope ◽  
Near Infrared ◽  
Colon Adenocarcinoma ◽  
Ultra Violet ◽  
Human Colon ◽  
Size Analysis ◽  
Transmission Electron ◽  
Infrared Spectrophotometer ◽  
Ft Ir ◽  
Human Colon Adenocarcinoma

The multifunctional nanocompoties (MFNCs) as drug release carriers are prepared by cross-linking reaction of cationic chitosan (CS) and anionic tripolyphosphate (TPP) to encapsulate Fe3O4 nanoparticles(NPs) loaded cancer therapeutic agents such as berberine (BB), KCY-24B, KCY-Tai…etc were studied. These MFNCs were characterized by fourier transform infrared spectrophotometer (FT-IR), ultra violet–visible-near infrared spectrophotometer (UV-VIS-NIR spectrophotometer), size analysis, transmission electron microscope (TEM) and field-emission scanning electron microscope (FESEM). Then we obtained here the preparation method, characterization, and capability of these efficative nanoparticles. Cell celluar uptake and distribution of MFNCs were also inspected in human colon adenocarcinoma cell lines (Colo 205).

SYNTHESIS OF GRAPHITE OXIDE (GO)/Cu2O NANOCOMPOSITE AND ITS CATALYTIC PERFORMANCE UNDER THE ULTRASOUND

NANO ◽  
2013 ◽  
Vol 08 (03) ◽  
pp. 1350032 ◽  
Author(s):  
CHUNNIAN CHEN ◽  
CHENWEI YU ◽  
WEN FU
Keyword(s):  
Fourier Transform ◽  
Electrostatic Interactions ◽  
Catalytic Performance ◽  
X Ray ◽  
Selective Area ◽  
Transmission Electron ◽  
Vis Spectroscopy ◽  
Ft Ir ◽  
Ir And Raman ◽  
Selective Area Electron Diffraction

GO/ Cu2O nanocomposite had been successfully synthesized by electrostatic interactions method. X-ray powder diffraction (XRD), transmission electron microscope (TEM), selective-area electron diffraction (SAED), Fourier transform infrared spectroscopy (FT-IR) and Raman spectra confirmed the structure of the Cu2O and GO/ Cu2O nanocomposite. The catalytic degradation of Rhodamine B under the condition of ultrasound was investigated and the result of UV-Vis spectroscopy demonstrated that the nanocomposite can efficiently degraded it.

Study on the Preparation, Property and Drug Release Carrier of Chitosan-Based Nanoparticles for Cancer Treatment

2011 ◽  
Vol 284-286 ◽  
pp. 1800-1803
Author(s):  
Chih Wei Chou ◽  
Yueh Hsiung Kuo ◽  
You Cheng Hseu ◽  
Yung Shiu Chen ◽  
Te Hsing Wu
Keyword(s):  
Electron Microscope ◽  
Near Infrared ◽  
Ultra Violet ◽  
Drug Carriers ◽  
Therapeutic Agents ◽  
Synthetic Method ◽  
Grafting Reaction ◽  
Transmission Electron ◽  
Infrared Spectrophotometer ◽  
Ft Ir

In this paper, the effective nanocompoties (EFNCs) as drug carriers are prepared by grafting reaction of cationic chitosan (CS) and anionic tripolyphosphate (TPP) to encapsulate cancer therapeutic agents such as berberine (BB), KCY-24B…etc. These EFNCs were featured by ultra violet–visible-near infrared spectrophotometer (UV-VIS-NIR spectrophotometer), fourier transform infrared spectrophotometer (FT-IR), zetasizer, transmission electron microscope (TEM) and field-emission scanning electron microscope (FESEM). So we can obtain here the synthetic method, characterization, and functionality of these effective nanoparticles.

scholarly journals Extracellular Biofabrication, Characterization, and Antimicrobial Efficacy of Silver Nanoparticles Loaded on Cotton Fabrics Using Newly IsolatedStreptomycessp. SSHH-1E

2016 ◽  
Vol 2016 ◽  
pp. 1-17 ◽  
Author(s):  
Noura El-Ahmady El-Naggar ◽  
Attiya Mohamedin ◽  
Sarah Shawqi Hamza ◽  
Abdel-Dayem Sherief
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Silver Nanoparticles ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Fourier Transform Infrared Spectroscopy ◽  
Fourier Transform Infrared ◽  
Cell Free Supernatant ◽  
Transmission Electron ◽  
Vis Spectroscopy

Biological method for silver nanoparticles synthesis has been developed to obtain cost effective, clean, nontoxic, and ecofriendly size-controlled nanoparticles. The objective of this study is extracellular biosynthesis of antimicrobial AgNPs using cell-free supernatant of a localStreptomycessp. strain SSHH-1E. Different medium composition and fermentation conditions were screened for maximal AgNPs biosynthesis using Plackett-Burman experimental design and the variables with statistically significant effects were selected to study their combined effects and to find out the optimum values using a Box-Behnken design. The synthesized AgNPs were characterized using UV-visible spectroscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, and energy dispersive X-ray spectroscopy. Rapid biosynthesis of AgNPs was achieved by addition of 1 mM AgNO3solution to the cell-free supernatant. The produced particles showed a single surface plasmon resonance peak at 400 nm by UV-Vis spectroscopy which confirmed the presence of AgNPs.Streptomycessp. SSHH-1E was identified asStreptomyces narbonensisSSHH-1E. Transmission electron microscopy study indicated that the shape of AgNPs is spherical and the size is ranging from 20 to 40 nm. Fourier transform infrared spectroscopy analysis provides evidence for proteins as possible reducing and capping agents. Furthermore, the biosynthesized AgNPs significantly inhibited the growth of medically important pathogenic Gram-positive and Gram-negative bacteria and yeast. The maximum biosynthesis of AgNPs was achieved at initial pH of 8, peptone of 0.5 g, and inoculum age of 48 h. The statistical optimization resulted in a 4.5-fold increase in the production of AgNPs byStreptomyces narbonensisSSHH-1E.

Fabrication and Characterization of Nano-Sized Starch Particles

2015 ◽  
Vol 1120-1121 ◽  
pp. 275-280
Author(s):  
Hua Lin ◽  
Qing Li ◽  
Mu Feng ◽  
Li Zhao Qin
Keyword(s):  
Fourier Transform ◽  
Electron Microscope ◽  
Experimental Conditions ◽  
Transmission Electron ◽  
Infrared Spectrometer ◽  
Ft Ir ◽  
Plausible Mechanism ◽  
Fabrication And Characterization ◽  
The Fourier Transform

An efficient method of preparing nanostarch using high-intensity ultrasonic irradiation and acid hydrolysis was discussed. The transmission electron microscope (TEM) showed that the nanosized starch particles were in shape of sphere with the size of 80-120 nm, and their surfaces were rough with many flocci. The Fourier transform infrared spectrometer (FT-IR) revealed that the products maintained the original biological characteristics, and the molecules did not undergo any chemical changes. In addition, the effects of experimental conditions were analyzed and a plausible mechanism was proposed to explain the formation of the nanostarch.

scholarly journals Effects of aluminum (Al) incorporation on structural, optical and thermal properties of ZnO nanoparticles

2018 ◽  
Vol 36 (3) ◽  
pp. 419-426
Author(s):  
Nashiruddin Ahammed ◽  
Md Samim Hassan ◽  
Mehedi Hassan
Keyword(s):  
Thermal Properties ◽  
Electron Microscope ◽  
Zno Nanoparticles ◽  
Sol Gel ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Transmission Electron ◽  
Vis Spectroscopy ◽  
Ft Ir ◽  
Doped Zno

AbstractIn this research article, pure and 1 %, 3 % and 5 % aluminium doped zinc oxide nanoparticles (NPs) were prepared via sol-gel method and then calcined at 500 °C. X-ray diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared (FT-IR) spectroscopy, UV-Vis spectroscopy, thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) techniques were used to investigate the structural, optical and thermal properties of synthesized pure and Al doped ZnO nanoparticles. Energy dispersive X-ray spectroscopy (EDX) analysis revealed high purity of nanoparticles in the synthesized products without any impurity peaks. Mean dimension of the nanoparticles was ~28 nm and they were hexagonal in shape, according to the images analyzed by transmission electron microscope (TEM). The optical absorption spectra of pure and Al doped ZnO samples studied using UV-Vis spectrometry have been presented and we have observed that the band gap increases with increasing Al concentration. In FT-IR spectra, the broad absorption peaks around 485 cm−1 and 670 cm−1 were assigned to Zn–O vibration. Above 450 °C, the TG curve became flat what means there was no weight loss. In the DSC curve it is seen that the transition at 150 °C was highly exothermic because of structural relaxation and on doping the exothermic peaks became shifted to the lower value of temperature. These types of materials are very useful in optoelectronics applications.

Development of Biogenic Silver Nanoparticle Using Rosa Chinensis Flower Extract and Its Antibacterial Property

2016 ◽  
Vol 16 (4) ◽  
pp. 3969-3972 ◽  
Author(s):  
Yongde Meng ◽  
Yanjie Sun
Keyword(s):  
Silver Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Rosa Chinensis ◽  
Flower Extract ◽  
Transmission Electron ◽  
Ft Ir ◽  
Ir Analysis ◽  
The Fourier Transform

In the present study, biosynthesis of silver nanoparticles was carried out using Rosa chinensis flower extract as reducing agent. The characterization of silver nanoparticles was done by UV-VIS spectrum. The morphology and size of silver nanoparticles were determined by transmission electron microscope (TEM) image. The crystallization of silver nanoparticles was confirmed by X-ray diffraction (XRD) measurements. The Fourier transform infrared (FT-IR) analysis was used to confirm the possible involvement in the formation and stabilization of synthesized silver nanoparticles by the extract of Rosa chinensis flower. Antibacterial activity of silver nanoparticles was studied against Gram positive Staphycoccus aureus and Gram negative Escherichia coli.

scholarly journals A Facile Urea-Assisted Thermal Decomposition Process of TiO2 Nanoparticles and Their Photocatalytic Activity

Coatings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 165
Author(s):  
Sandip Madhukar Deshmukh ◽  
Mohaseen S. Tamboli ◽  
Hamid Shaikh ◽  
Santosh B. Babar ◽  
Dipak P. Hiwarale ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Photocatalytic Activity ◽  
Tio2 Nanoparticles ◽  
Large Scale ◽  
Ultra Violet ◽  
Tio2 Nps ◽  
Transmission Electron ◽  
Structures And Properties ◽  
Ft Ir ◽  
Large Scale Synthesis

In the present work, we have reported a facile and large-scale synthesis of TiO2 nanoparticles (NPs) through urea-assisted thermal decomposition of titanium oxysulphate. We have successfully synthesized TiO2 NPs by using this effective route with different weight ratios of titanium oxysulphate: urea. The structures and properties of TiO2 NPs were confirmed by scanning electron microscope) (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), fourier transform infrared spectroscopy (FT-IR), ultra violet–visible spectroscopy (UV-vis), and photoluminescence (Pl) techniques. XRD demonstrated that TiO2 NPs holds of anatase crystal phase with crystallizing size 14–19 nm even after heating at 600 °C. TGA, SEM, and TEM images reveal urea’s role, which controls the size, morphology, and aggregation of TiO2 NPs during the thermal decomposition. These TiO2 NPs were employed for photodegradation of Methyl Orange (MO) in the presence of ultraviolet (UV) radiation. An interesting find was that the TiO2 NPs exhibited better photocatalytic activity and excellent recycling stability over several photodegradation cycles. Furthermore, the present method has a great perspective to be used as an efficient method for large-scale synthesis of TiO2 NPs.

scholarly journals Green Synthesis, Characterization, and Antibacterial Properties of Silver Nanoparticles Obtained by Using Diverse Varieties of Cannabis sativa Leaf Extracts

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 4041
Author(s):  
Adriana Cecilia Csakvari ◽  
Cristian Moisa ◽  
Dana G. Radu ◽  
Leonard M. Olariu ◽  
Andreea I. Lupitu ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Antioxidant Capacity ◽  
Cannabis Sativa ◽  
Antibacterial Properties ◽  
Green Building ◽  
Human Pathogens ◽  
Leaf Extracts ◽  
Vis Spectroscopy ◽  
Ft Ir

Cannabis sativa L. (hemp) is a plant used in the textile industry and green building material industry, as well as for the phytoremediation of soil, medical treatments, and supplementary food products. The synergistic effect of terpenes, flavonoids, and cannabinoids in hemp extracts may mediate the biogenic synthesis of metal nanoparticles. In this study, the chemical composition of aqueous leaf extracts of three varieties of Romanian hemp (two monoecious, and one dioecious) have been determined by Fourier-Transformed Infrared spectroscopy (FT-IR), high-performance liquid chromatography, and mass spectrometry (UHPLC-DAD-MS). Then, their capability to mediate the green synthesis of silver nanoparticles (AgNPs) and their pottential antibacterial applications were evaluated. The average antioxidant capacity of the extracts had 18.4 ± 3.9% inhibition determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH•) and 78.2 ± 4.1% determined by 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS™) assays. The total polyphenolic content of the extracts was 1642 ± 32 mg gallic acid equivalent (GAE) L−1. After this, these extracts were reacted with an aqueous solution of AgNO3 resulting in AgNPs, which were characterized by UV−VIS spectroscopy, FT-IR, scanning electron microscopy (SEM-EDX), and dynamic light scattering (DLS). The results demonstrated obtaining spherical, stable AgNPs with a diameter of less than 69 nm and an absorbance peak at 435 nm. The mixture of extracts and AgNPs showed a superior antioxidant capacity of 2.3 ± 0.4% inhibition determined by the DPPH• assay, 88.5 ± 0.9% inhibition as determined by the ABTS•+ assay, and a good antibacterial activity against several human pathogens: Escherichia coli, Klebsiella pneumoniae, Pseudomonas fluorescens, and Staphylococcus aureus.

scholarly journals Synthesis and antimicrobial activities of some (E)-N'-1-(substituted benzylidene)benzohydrazides

2017 ◽  
Vol 5 (1) ◽  
pp. 17 ◽  
Author(s):  
V. Manikandan ◽  
S. Balaji ◽  
R. Senbagam ◽  
R. Vijayakumar ◽  
M. Rajarajan ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fourier Transform ◽  
Magnetic Resonance ◽  
Spectral Data ◽  
Ultra Violet ◽  
Antimicrobial Activities ◽  
Antibacterial And Antifungal Activities ◽  
Ft Ir ◽  
Fourier Transform Ir ◽  
Antibacterial And Antifungal

About ten substituted (E)-N'-1-(substituted benzylidene) benzohydrazides have been synthesized. They are analyzed by their analytical, ultra violet (UV), Fourier transform-IR (FT-IR) and nuclear magnetic resonance (NMR) spectral data and evaluated by antimicrobial activities such antibacterial and antifungal activities.

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