Characterization of zinc oxide nanoparticles encapsulated into zeolite-Y: An in-situ combined X-ray diffraction, XAFS, and SAXS study

2003 ◽  
Vol 199 ◽  
pp. 499-503 ◽  
Author(s):  
F. Meneau ◽  
G. Sankar ◽  
N. Morgante ◽  
S. Cristol ◽  
C.R.A. Catlow ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Zeolite Y ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray

scholarly journals Preparation and Characterization of Zinc Oxide (Zno)/Polymethyl Methacrylate (PMMA) Nanocomposites

2021 ◽  
Vol 04 (04) ◽  
Author(s):  
Jayashree Bagawade ◽  
Keyword(s):  
Zinc Oxide ◽  
Methyl Methacrylate ◽  
Zinc Oxide Nanoparticles ◽  
Nanocomposite Films ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Poly Methyl Methacrylate ◽  
Absorption Measurements

A series of novel zinc oxide / Poly (methyl methacrylate) nanocomposite films with different ZnO contents were prepared through inclusion of pre-synthesized zinc oxide nanoparticles. The physical composition and morphology of the as-prepared nanocomposites were studied by XRD and TEM. The TEM analyses revealed that the zinc oxide nanoparticles have a particle size of ~3–5 nm. X-ray diffraction proved the presence of the amorphous PMMA in the nanocomposites. The intermolecular interactions within the polymer nanocomposites were explored by FTIR and XRD. FTIR spectra confirmed the dispersion of the zinc oxide nanoparticles in the Poly (methyl methacrylate) i.e. PMMA matrices. The UV-Vis absorption measurements of the ZnO/PMMA nanocomposites proved their potential optical properties.

scholarly journals Bioactivities of Geranium wallichianum Leaf Extracts Conjugated with Zinc Oxide Nanoparticles

Biomolecules ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 38 ◽  
Author(s):  
Banzeer Ahsan Abbasi ◽  
Javed Iqbal ◽  
Riaz Ahmad ◽  
Layiq Zia ◽  
Sobia Kanwal ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Energy Dispersive ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Leaf Extracts ◽  
Tem Analysis ◽  
X Ray ◽  
Transmission Electron

This study attempts to obtain and test the bioactivities of leaf extracts from a medicinal plant, Geranium wallichianum (GW), when conjugated with zinc oxide nanoparticles (ZnONPs). The integrity of leaf extract-conjugated ZnONPs (GW-ZnONPs) was confirmed using various techniques, including Ultraviolet–visible spectroscopy, X-Ray Diffraction, Fourier Transform Infrared Spectroscopy, energy-dispersive spectra (EDS), scanning electron microscopy, transmission electron microscopy, and Raman spectroscopy. The size of ZnONPs was approximately 18 nm, which was determined by TEM analysis. Additionally, the energy-dispersive spectra (EDS) revealed that NPs have zinc in its pure form. Bioactivities of GW-ZnONPs including antimicrobial potentials, cytotoxicity, antioxidative capacities, inhibition potentials against α-amylase, and protein kinases, as well as biocompatibility were intensively tested and confirmed. Altogether, the results revealed that GW-ZnONPs are non-toxic, biocompatible, and have considerable potential in biological applications.

Biosynthesis of Zinc Oxide Nanoparticles Using Pongamia pinnata Plant Leaves Extract

2019 ◽  
pp. 43-46
Author(s):  
Sneha Sawade ◽  
Pramod Kulkarni
Keyword(s):  
Zinc Oxide ◽  
Aqueous Extract ◽  
Zinc Oxide Nanoparticles ◽  
Pongamia Pinnata ◽  
Oxide Nanoparticles ◽  
Capping Agent ◽  
Plant Leaves ◽  
X Ray Diffraction ◽  
X Ray ◽  
Average Size

We reported a simple, green and eco-friendly approach for the synthesis of zinc oxide nanoparticles using aqueous extract of Pongamia pinnata plant leaves acts as reducing agent as well as capping agent. Biosynthesized zinc oxide nanoparticles were characterized by FTIR, X-ray diffraction and field emission scanning electron microscopy. The results suggested that the zinc oxide nanoparticles synthesized by aqueous extract of Pongamia pinnata plant leaves with high purity, mostly spherical in shape with an average size of 23.5 nm.

LASER-INDUCED PHOTOLUMINESCENT STUDIES OF Al-DOPED ZINC OXIDE NANOPARTICLES

2010 ◽  
Vol 09 (05) ◽  
pp. 439-445
Author(s):  
DHIRAJ KUMAR ◽  
SUNIL KUMAR ◽  
H. S. BHATTI
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Nitrogen Laser ◽  
X Ray Diffraction ◽  
Electron Microscopic ◽  
Time Resolved ◽  
X Ray ◽  
Aluminum Ions ◽  
Transmission Electron

In this paper, addition of aluminum in zinc oxide is incorporated using low-temperature chemical synthesis route. Aluminum ions help in crystallization of zinc oxide nanoparticles. Characterization of the synthesized nanoparticles of zinc oxide has been done using Transmission electron microscope (TEM), and X-ray diffraction (XRD) analysis, Energy-resolved photoluminescence (PL) spectra and Time-resolved laser-induced photoluminescence (TRPL) at room temperature. Transmission electron microscopic observations and X-Ray diffraction studies indicate highly crystalline nature and particle size of the order of 20 nm in ZnO:Al . Time-resolved laser-induced photoluminescence measurements have been done using pulsed nitrogen laser as an excitation source, operated at wavelength 337.1 nm and having high peak output power of 1 MW. The results show that at higher concentrations of Al doping in host ZnO phosphor, emission intensity is more by several orders of magnitude and lifetime shortening indicates that these nanoparticles are more efficient as compared with lower concentrations of dopant.

Synthesis and Characterization of Composite Structure Zeolite Y

2011 ◽  
Vol 233-235 ◽  
pp. 1790-1793 ◽  
Author(s):  
Wei Shen ◽  
Bao Jian Shen
Keyword(s):  
Silica Gel ◽  
Composite Structure ◽  
Zeolite Y ◽  
Synthesis And Characterization ◽  
Organic Additives ◽  
X Ray Diffraction ◽  
Y Zeolite ◽  
X Ray

Y zeolite was synthesized form silica gel microsphere by in- situ hydrothermal method, with appropriate amount of other constituents, such as sodium silicate, water, without adding any organic additives. The as-synthesized samples were characterized using powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and N2 sorption. The results show that the synthesized sample not only has a composite structure with zeolite Y and silica gel, but also retains the shape of silica gel microsphere. The pore distribution of the composite materials indicated that the composite material contains two types of pore that are micropores and large pores.

scholarly journals Organic–Inorganic Nanohybrid Electrochemical Sensors from Multi-Walled Carbon Nanotubes Decorated with Zinc Oxide Nanoparticles and In-Situ Wrapped with Poly(2-methacryloyloxyethyl ferrocenecarboxylate) for Detection of the Content of Food Additives

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1388
Author(s):  
Jing-Wen Xu ◽  
Zhuo-Miao Cui ◽  
Zhan-Qing Liu ◽  
Feng Xu ◽  
Ya-Shao Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Zinc Oxide ◽  
Electron Microscope ◽  
Zinc Oxide Nanoparticles ◽  
Electrochemical Sensors ◽  
Oxide Nanoparticles ◽  
X Ray ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

An electrochemical sensor for detection of the content of aspartame was developed by modifying a glassy carbon electrode (GCE) with multi-walled carbon nanotubes decorated with zinc oxide nanoparticles and in-situ wrapped with poly(2-methacryloyloxyethyl ferrocenecarboxylate) (MWCNTs@ZnO/PMAEFc). MWCNTs@ZnO/PMAEFc nanohybrids were prepared through reaction of zinc acetate dihydrate with LiOH·H2O, followed by reversible addition-fragmentation chain transfer polymerization of 2-methacryloyloxyethyl ferrocenecarboxylate, and were characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), Raman, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), atomic force microscope (AFM), scanning electron microscope (SEM), and transmission electron microscope (TEM) techniques. The electrochemical properties of the prepared nanohybrids with various composition ratios were examined by cyclic voltammetry (CV), and the trace additives in food and/or beverage was detected by using differential pulse voltammetry (DPV). The experimental results indicated that the prepared nanohybrids for fabrication of electrochemical modified electrodes possess active electroresponse, marked redox current, and good electrochemical reversibility, which could be mediated by changing the system formulations. The nanohybrid modified electrode sensors had a good peak current linear dependence on the analyte concentration with a wide detection range and a limit of detection as low as about 1.35 × 10−9 mol L−1, and the amount of aspartame was measured to be 35.36 and 40.20 µM in Coke zero, and Sprite zero, respectively. Therefore, the developed nanohybrids can potentially be used to fabricate novel electrochemical sensors for applications in the detection of beverage and food safety.

scholarly journals The toxic effect of zinc oxide nanoparticles on the terrestrial slug Lehmannia nyctelia (Gastropoda-Limacidae)

2021 ◽  
Vol 82 (1) ◽  
Author(s):  
Wafaa A. Mohammad ◽  
Safaa M. Ali ◽  
Nasser Farhan ◽  
Shimaa Mohamed Said
Keyword(s):  
Zinc Oxide ◽  
Toxic Effect ◽  
Zinc Oxide Nanoparticles ◽  
Plant Protection ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Visible Spectroscopy ◽  
Zno Nps ◽  
X Ray ◽  
Histological Alterations

Abstract Background Chemicals have deleterious effect on the environment. The wide use of nanomaterials as products for plant protection, fertilizers, and also in water purification leads to the release of these materials to the environment. Terrestrial gastropods including snails and slugs have the ability to accumulate heavy metals in their bodies. The present study evaluates the toxic effect of zinc oxide nanoparticles on the terrestrial slug Lehmannia nyctelia. Zinc oxide nanoparticles (ZnO NPs) were prepared by thermal decomposition method. ZnO NPs are characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and ultraviolet-visible spectroscopy (UV). Slugs were treated with three different concentrations of ZnO NPs. Results A total of three animals died by the end of the experiment. Many histological alterations were detected after exposure to different concentration of ZnO NPs. Conclusions The obtained histological alterations prove the toxic effect of ZnO NPs on the animal under study.

scholarly journals High-Yield Synthesis of Zinc Oxide Nanoparticles from Bicontinuous Microemulsions

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
S. López-Cuenca ◽  
L. A. Pérez Carrillo ◽  
M. Rabelero Velasco ◽  
R. Díaz de León ◽  
H. Saade ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Zinc Oxide ◽  
Zno Nanoparticles ◽  
Zinc Oxide Nanoparticles ◽  
High Yield ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Electronic Microscopy ◽  
X Ray ◽  
Hydrolysis Of

The high-yield synthesis of zinc oxide (ZnO) primary nanoparticles with high purity and with diameters between 6 and 22 nm using bicontinuous microemulsions is reported in this work. The ZnO nanoparticles were made by hydrolysis of Zn(NO3)2with NaOH aqueous solution and precipitation, followed by calcination of the precipitate. Higher yields and productivities of ZnO nanoparticles were obtained compared to values produced with w/o micremulsions reported in the literature. Particles were characterized by transmission electronic microscopy (TEM), X-ray diffraction, and atomic absorption spectroscopy.

scholarly journals Root and Shoot Uptake of Synthesized Nano Zno and Its Impact on Differences in Bio-Availability During Exposure In Aqueous Suspension

2019 ◽  
Vol 8 (10) ◽  
pp. 1824-1829
Keyword(s):  
Zinc Oxide ◽  
Green Synthesis ◽  
Zinc Oxide Nanoparticles ◽  
Aqueous Suspension ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
And Control ◽  
The Impact ◽  
Germination And Growth

The proposed study highlights on the synthesis of Zinc oxide nanoparticles using chemical and green methods. In the field of nanotechnology Green synthesis is an eco-friendly development. The synthesis of ZnO is carried out using leaf extract of Azadirachta indica (neem) as a reducing agent. The synthesised products were characterized by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray Analysis (EDAX). The present work is to investigate the effect of chemical and green synthesized zinc oxide nanoparticles on germination and growth of Lycopersicon esculentum (tomato) using petriplate seed germination method. The impact of concentration of applied ZnO nanoparticles via green synthesis and chemical methods were analyzed. It was observed that the growth of Seedling is maximum for green synthesized zinc oxide nanoparticles at appropriate concentration over chemically synthesized zinc oxide nanoparticles, bulk ZnO and control. Hence the green method is found to be more effective.

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