scholarly journals Synthesis and Characterizations of Cadmium Doped Aluminium Oxide Nanoparticles

NanoNEXT ◽  
2021 ◽  
pp. 1-6
Author(s):  
Prabakar S ◽  
Mayakannan M ◽  
Vinoth E
Keyword(s):  
Fourier Transform ◽  
Aluminium Oxide ◽  
Average Crystallite Size ◽  
Precipitation Method ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Crystalline Nature ◽  
Aluminium Oxide Nanoparticles ◽  
Reverse Precipitation

The cadmium doped aluminium oxide (CdAl2O3) nanoparticles were prepared by reverse precipitation method. The prepared CdAl2O3 nanoparticles were characterized by Powder X-Ray Diffraction in order to confirm the crystalline nature of the sample and found average crystallite size in the range 27.6 nm. Fourier transform infrared spectroscopy confirms the presence of metal oxygen bonds in the CdAl2O3 nanoparticle.

scholarly journals Crystal Chemistry and Luminescence Properties of Eu-Doped Polycrystalline Hydroxyapatite Synthesized by Chemical Precipitation at Room Temperature

Crystals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 250 ◽  
Author(s):  
Francesco Baldassarre ◽  
Angela Altomare ◽  
Nicola Corriero ◽  
Ernesto Mesto ◽  
Maria Lacalamita ◽  
...  
Keyword(s):  
Fourier Transform ◽  
High Temperature ◽  
Inductively Coupled Plasma ◽  
Room Temperature ◽  
Annealing Temperature ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Inductively Coupled

Europium-doped hydroxyapatite Ca10(PO4)6(OH)2 (3% mol) powders were synthesized by an optimized chemical precipitation method at 25 °C, followed by drying at 120 °C and calcination at 450 °C and 900 °C. The obtained nanosized crystallite samples were investigated by means of a combination of inductively coupled plasma (ICP) spectroscopy, powder X-ray diffraction (PXRD), Fourier Transform Infrared (FTIR), Raman and photoluminescence (PL) spectroscopies. The Rietveld refinement in the hexagonal P63/m space group showed europium ordered at the Ca2 site at high temperature (900 °C), and at the Ca1 site for lower temperatures (120 °C and 450 °C). FTIR and Raman spectra showed slight band shifts and minor modifications of the (PO4) bands with increasing annealing temperature. PL spectra and decay curves revealed significant luminescence emission for the phase obtained at 900 °C and highlighted the migration of Eu from the Ca1 to Ca2 site as a result of increasing calcinating temperature.

scholarly journals Calcium pyrophosphate powder derived from avian eggshell waste

Cerâmica ◽  
2016 ◽  
Vol 62 (363) ◽  
pp. 278-280 ◽  
Author(s):  
T. H. A. Corrêa ◽  
J. N. F. Holanda
Keyword(s):  
Electron Microscopy ◽  
Low Cost ◽  
Average Crystallite Size ◽  
Calcium Pyrophosphate ◽  
Precipitation Method ◽  
Medical Applications ◽  
X Ray Diffraction ◽  
X Ray ◽  
Eggshell Waste ◽  
Scanning Electron

Abstract Calcium pyrophosphate (CPP) was prepared by a simple precipitation method using avian eggshell waste as a low-cost alternative calcium precursor source. The synthesized CPP powder was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM/EDS), thermogravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FTIR). The results indicate that pure β-CPP nanocrystallites (Ca/P = 1.067) were successfully synthesized from avian eggshell waste. The correlation among XRD, SEM/EDS, TGA, and FTIR data is well established. The β-CPP particle exhibited spherical morphology with average crystallite size of 62.3 nm, and can be an important bioceramic for medical applications.

scholarly journals Plant Extract Mediated Synthesis of Nickel Oxide Nanoparticles

2020 ◽  
Vol 2 (2) ◽  
pp. 205-209
Keyword(s):  
Fourier Transform ◽  
Nickel Oxide ◽  
Fourier Transform Infrared ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Leaf Extracts ◽  
Nickel Oxide Nanoparticles ◽  
X Ray ◽  
Chloride Hexahydrate ◽  
Scanning Electron

The present study reports the successful synthesis of nickel oxide nanoparticles using Vernonia amygdalina plant leaf extracts as a chelating agent and nickel (II) chloride hexahydrate (NiCl2•6H2O) as precursor. The synthesized powder was gray black in color and annealed at 500 °C for 2 hours to obtain nickel oxide nanoparticles. Characterization techniques such as powder X-ray diffraction, scanning electron microscopy, and Fourier transform infrared spectroscopy were used to study the structure and morphology of the nanoparticles. Powder X-ray diffraction patterns revealed that nickel oxide nanoparticles with an average crystallite size of 17.86nm were synthesized. Scanning electron microscope images show that the nanoparticles have octahedral structure. Fourier transform infrared spectrophotometer analysis revealed that the strongest bond at 1094.8cm-1 corresponds to stretching vibration mode of Ni-O nanoparticles.

scholarly journals Synthesis of BaTi5O11 by an aqueous co-precipitation method via stable organic titanate precursor

2021 ◽  
pp. 14-14
Author(s):  
Pelin Aktaş
Keyword(s):  
Aqueous Media ◽  
Average Crystallite Size ◽  
Phase Evolution ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Spectroscopy Analysis ◽  
X Ray ◽  
Ft Ir ◽  
Scherrer Formula ◽  
Co Precipitation

BaTi5O11 has been widely researched due to its unique microwave properties. Conventionally it is challenging to obtain this compound as a single phase. The BaTi5O11 was synthesized via co-precipitation technique using an aqueous solution of titanium(IV)(triethanolaminato) isopropoxide, barium nitrate and ammonia as precursors which are stable in an aqueous media. The phase evolution, purity, and structure were identified by X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive X-ray (EDX) spectroscopy analysis. The desired BaTi5O11 structure was obtained by calcination at 900?C. Furthermore, the structure is characterized by TGA, FT-IR and Raman studies. The study showed that the particles were between 80 and 120 nm in size and the average crystallite size was determined from the Scherrer formula as 68.1 nm at 900?C.

Syntheses and Characterizations of Cobalt Doped Mesoporous Alumina Templated by Rubber Latex and its Adsorption of Acetaldehyde

2013 ◽  
Vol 742 ◽  
pp. 346-350
Author(s):  
Wei Zhe ◽  
Bao Kun Zhu ◽  
Tou Gen Liao ◽  
Zhi Qiang Li ◽  
Hai Yan Yang ◽  
...  
Keyword(s):  
Fourier Transform ◽  
High Efficiency ◽  
Gaseous Mixture ◽  
Aluminium Oxide ◽  
Mesoporous Alumina ◽  
X Ray Diffraction ◽  
Rubber Latex ◽  
X Ray ◽  
Ft Ir ◽  
Adsorption Desorption

Mesoporous cobalt doped aluminium oxide (Co/MAl2O3/RL) was synthesized using rubber latex as biotemplate by hydrothermal method. The synthesized mesoporous aluminium oxide samples were characterized by a combination of various physicochemical techniques, such as X-ray diffraction (XRD), N2adsorption/desorption and Fourier transform infrared (FT-IR). Espciallly, Co/MAl2O3/RL exhibited a high efficiency of acetaldehyde adsorption from mixed gaseous mixture.

SIZED-CONTROLLED ZnO NANOPARTICLES, SYNTHESIS AND MORPHOLOGY

2009 ◽  
Vol 08 (03) ◽  
pp. 277-279 ◽  
Author(s):  
MOHSEN OFTADEH ◽  
MASOUD SALAVATI-NIASARI ◽  
FATEMEH DAVAR
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Fourier Transform ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Zinc Acetylacetonate ◽  
Nanoparticles Synthesis

Zinc oxide nanoparticles were successfully prepared through the decomposition of zinc acetylacetonate precursor in oleylamine in the presence of triphenylphosphine. The products were characterized by X-ray diffraction, transmission electron microscopy, and Fourier transform infrared spectroscopy.

scholarly journals Synthesis and Structural, Optical Properties of Cadmium Doped Cobalt Oxide Nanoparticles

2021 ◽  
pp. 32-37
Author(s):  
Mayakannan M ◽  
Vinoth E ◽  
Prabakar S
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Fourier Transform Infrared Spectroscopy ◽  
Cobalt Oxide ◽  
Fourier Transform Infrared ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cobalt Oxide Nanoparticles ◽  
Vis Spectroscopy

The nanostructure cadmium doped cobalt oxide nanoparticles were prepared by microwave irradiation techniques. The prepared nanoparticles were further characterized using Powder X-ray diffraction, Fourier transform infrared spectroscopy and UV-Vis spectroscopy. The Powder X ray diffraction results shows good crystalline nature. The Fourier transform infrared spectroscopy conforms stretching and bending vibration of metal oxygen groups. UV-Vis spectroscopy results show absorption edges are 204 nm, 220nm prepared nanoparticles additionally optical parameter skin depth, extinction co-efficient, reflectance, refractive index is calculated.

Cerium Oxide Nanoparticles Catalyst for the Oxidation of Methanol

2019 ◽  
Vol 35 (5) ◽  
pp. 1539-1545
Author(s):  
Hossein Bayahia
Keyword(s):  
Cerium Oxide ◽  
Methanol Conversion ◽  
Precipitation Method ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Oxidation Of Methanol ◽  
Co Precipitation ◽  
Cerium Oxide Catalyst

This study outlines the synthesis of cerium oxide nanoparticles, their characterization and their activity in the oxidation of methanol. A simple and easy co-precipitation method was used for the preparation of cerium oxide, without any added surfactants. The physicochemical properties of the sample were studied using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD). The morphology and size of the catalyst was studied using SEM. EDX confirms the element content of the synthesized cerium oxide. The structure of CeO2 was confirmed using XRD. Thus, the reported CeO2 was an active catalyst for methanol oxidation to form formaldehyde at a temperature range of 523–753K in the gas phase. At 753K, the cerium oxide catalyst gave 53% formaldehyde selectivity, 57% methanol conversion and 31% formaldehyde yields.

The Influence of Annealing Temperature on Structural Properties of Zinc Oxide Nanoparticles Synthesized by Precipitation Method

2017 ◽  
Vol 728 ◽  
pp. 215-220 ◽  
Author(s):  
Natpasit Chaithanatkun ◽  
Korakot Onlaor ◽  
Benchapol Tunhoo
Keyword(s):  
Zinc Oxide ◽  
Crystallite Size ◽  
Zinc Oxide Nanoparticles ◽  
Annealing Temperature ◽  
Average Crystallite Size ◽  
Zinc Nitrate ◽  
Precipitation Method ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Hexagonal Wurtzite Crystal Structure

In the present work, the precipitation method was applied to prepare zinc oxide nanoparticles in the presence of zinc nitrate and potassium hydroxide as precursor solutions. The influence of annealing temperature on the properties such as structural and morphological of zinc oxide nanoparticles were performed by X-ray diffraction technique, field-emission scanning electron microscopy, Fourier-transform infrared spectroscopy, and Raman spectroscopy. The effects of annealing temperature on the crystallite size of zinc oxide nanoparticles have investigated. The XRD results represented that the zinc oxide nanoparticles exhibits high crystallinity of hexagonal wurtzite crystal structure. The average crystallite size of nanoparticles increased from 18 to 31 nm when the annealing temperature had increased. The morphology images show that the nanoparticles in this work were spherical in shape. Raman and FT-IR spectra confirm that the quality of Zn-O vibrational mode is stronger at higher annealing temperature.

Effect of Polyethylene Glycol Additive on Structure and Performance of Active Alumina by Reverse Precipitation Method

2012 ◽  
Vol 487 ◽  
pp. 649-652
Author(s):  
Fang Hu ◽  
Jiao Ma ◽  
Yu Sheng Wu ◽  
Di Zhang
Keyword(s):  
Polyethylene Glycol ◽  
Nitrogen Adsorption ◽  
Precipitation Method ◽  
Infrared Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Active Alumina ◽  
And Performance ◽  
Adsorption Desorption ◽  
Reverse Precipitation

Active alumina (γ-Al2O3) was prepared from NaAlO2 and HNO3 by a reverse precipitation method with addition of polyethylene glycol (PEG). The effect of PEG additived in the different stages during the preparing process was investigated by powder X-ray diffraction (XRD), fourier transform infrared analysis (FTIR) and nitrogen adsorption-desorption. It was found that the mesoporous alumina sample with the PEG additived into the initial HNO3 solution was the most effective at improving the surface area and the pore volume of γ-Al2O3.

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