Cadmium Sulphide Nanocrystallites for Optoelectronic Devices

2019 ◽  
Vol 969 ◽  
pp. 237-241
Author(s):  
R. Sivanand ◽  
S. Chellammal ◽  
S. Manivannan
Keyword(s):  
Diffraction Method ◽  
Cadmium Sulphide ◽  
Precipitation Method ◽  
Energy Dispersive Analysis ◽  
X Ray Diffraction ◽  
Visible Spectroscopy ◽  
X Ray ◽  
Morphological Studies ◽  
Scanning Electron Microscopy Measurement ◽  
Microscopy Measurement

Cadmium sulphide nanocrystallites have been synthesized using precipitation method. The average sizes of the prepared samples is determined by XRD (x-ray diffraction) method. Morphological studies are carried out by SEM (scanning electron microscopy) measurement. Necesssary elements present in prepared samples, are confirmed by EDAX (energy dispersive analysis of x-ray spectroscopy) method. By Ultraviolet visible spectroscopy measurement, the value of absorption wavelength, band gap values are calculated in optical method. The electrical properties are analysed using impedance analyser measurement for the Nanocrystallites.

Structural Properties of Size Variation of Nanocrystallites

2015 ◽  
Vol 813-814 ◽  
pp. 226-229
Author(s):  
S. Chellamal ◽  
A.P. Karthikeyan ◽  
P. Harsha ◽  
S. Manivannan
Keyword(s):  
Size Variation ◽  
Diffraction Method ◽  
Cadmium Sulphide ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Morphological Studies ◽  
Microscopy Method ◽  
Average Size

Silver doped cadmium sulphide nanocrystallites (CdS:Ag), undoped cadmium sulphide nanocrystallites (CdS), have been synthesized by the chemical precipitation method. Nanocrystalline materials are confirmed by the scanning electron microscopy method. The presented elements are identified by EDAX (Energy Dispersive X-ray Analysis). X-ray diffraction Method (XRD) is used to calculate the average size of the prepared sample. Morphological studies (SEM) are used to analyse the nature of the sample. The results are reported in this paper.

Synthesis, Structural Analysis of Cadmium Sulphide Nanocrystallites

2019 ◽  
Vol 969 ◽  
pp. 169-174
Author(s):  
R. Sivanand ◽  
S. Chellammal ◽  
S. Manivannan
Keyword(s):  
Size Variation ◽  
Cadmium Sulphide ◽  
Xrd Analysis ◽  
Sem Analysis ◽  
Precipitation Method ◽  
Capping Agent ◽  
Energy Dispersive Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

In this paper, the effect of size variation of cadmium sulphide nanocrystallites which have been prepared by precipitation method is analyzed. These prepared samples were studied using X-ray diffraction (XRD), Scanning electron microscopy (SEM), and Energy dispersive analysis of spectroscopy (EDAX) techniques. SEM analysis represents the morphological nature of prepared samples and EDAX indicates the confirmation of elements present in the sample. XRD analysis determines the size of the samples and identifies the structure using miller indices (h k l values) of the nanocrystallies matches with JCPDS. From the XRD analysis, the size variation which depends on dopant, capping agent are discussed and corresponding results are reported in this paper.

scholarly journals Application of Copper doped Cadmium Sulphide Nanocrystallites for controlling Oral Pathogen activity

2020 ◽  
Vol 9 (3) ◽  
pp. 1324-1327
Keyword(s):  
Micrococcus Luteus ◽  
Shigella Flexneri ◽  
Diffraction Method ◽  
Cadmium Sulphide ◽  
Antimicrobial Action ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Oral Pathogens ◽  
Co Precipitation

In this study, we tend to incontestable the synthesis and antimicrobial action of Copper doped Cadmium Sulphide nanomaterials averse oral pathogens.Using Chemical Co-Precipitation method, Copper doped cadmium sulphide (Cu:CdS) nanomaterials are Synthesised. The sizes of the samples prepared are found by XRD (x-ray diffraction) method. SEM (scanning electron microscopy carried out to find the Morphological analysis. Materials present are confirmed by EDAX (energy dispersive analysis of x-ray spectroscopy) method. The outcomes showed that the proteins, which contain amine gatherings, played a diminishing and controlling obligation during the arrangement of Copper doped cadmium sulphide (Cu:CdS) nanomaterials in the colloidal arrangement. The antimicrobial action was evaluated against oral pathogens, for example, Bacillus subtilis, Micrococcus luteus, Staphylococcus aureus, Escherichia coli, Proteus vulgaris and Shigella flexneri and these outcomes affirmed that the Copper doped Cadmium sulphide nanomaterials are showing great bactericial action.

Synthesis and Characterization of Zinc Doped Hydroxyapatite for Bone Substitute Applications

2014 ◽  
Vol 660 ◽  
pp. 942-946
Author(s):  
Mohamad Firdaus Abdul Wahid ◽  
C.M. Mardziah ◽  
Koay Mei Hyie ◽  
N.R. Nik Roselina
Keyword(s):  
Crystal Size ◽  
Diffraction Method ◽  
Lattice Parameters ◽  
Phase Changes ◽  
Precipitation Method ◽  
Zinc Ions ◽  
Crystal Shape ◽  
X Ray Diffraction ◽  
X Ray

Hydroxyapatite was prepared by using precipitation method. The substitution of zinc ions in hydroxyapatite structure was studied by several characterization techniques. Several concentration of zinc ions were substituted into hydroxyapatite. Characterization technique such as X-ray diffraction method was used to study the phase changes and the lattice parameters with the addition of zinc. Field emission scanning electron microscopy was used to examine the influence of zinc on the crystal size and the morphology of the as-synthesized powders. Based on X-ray diffraction result, the addition of zinc affects the lattice parameters and phase. The result showed that zinc ions were substituted in the structure. As zinc substitution increased, the lattice parameters a and c decreased. The crystal shape of hydroxyapatite without zinc ions was regular shapes while hydroxyapatite with zinc ions was irregular and also tends to agglomerates with single particle was calculated about 28 - 34 nm .

Synthesis, characterization and antibacterial studies of copper sulphide nanoparticles by chemical precipation method

2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Gowthami R ◽  
Nivetha K P
Keyword(s):  
Room Temperature ◽  
Functional Group ◽  
Copper Acetate ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
Copper Sulphide ◽  
X Ray Diffraction ◽  
Visible Spectroscopy ◽  
X Ray ◽  
Antibacterial Studies

In this present study the non toxic CuS nanoparticles was synthesized by the reaction of copper acetate, thiourea along with the precipitating agent NaoH under chemical precipitation method. The final product CuS nanomaterial was dried at room temperature for better growth of nanoparticles. The size and growth of the crystal depends on the temperature also on the addition of reagent. The resultant nanocrystal were characterized using various techniques like X ray diffraction reveals the particle size, Scanning electron microscope determines the morphology of crystal, Energy dispersive X ray spectroscopy investigate the elemental composition of nanoparticles, U-Visible spectroscopy examine the presence of metallic ion, Fourier transform infrared spectroscopy inspect the existence of functional group. The antibacterial activity of hexagonal structured copper sulphide nanomaterials against gram positive and gramnegative bacteria were also analyzed for their wide applications.

Determination of Quantum Confinement Effect of Nanoparticles

2014 ◽  
Vol 1051 ◽  
pp. 17-20 ◽  
Author(s):  
S. Chellammal ◽  
S. Manivannan
Keyword(s):  
Quantum Confinement ◽  
Bulk Material ◽  
Quantum Confinement Effect ◽  
Diffraction Method ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Grain Sizes ◽  
Structural And Electronic Properties

The energetic, structural and electronic properties of CdS with different nanometer sizes were prepared by the precipitation method by changing the refluxing time of the reactants. The grain sizes were determined by X-ray diffraction method. By impedance analyses method, the band gap value of nanoparticles were calculated and compared with the bulk material. The nanocrystalline CdS was characterized by Impedance spectroscopy and corresponding measurements are discussed briefly in this paper.

scholarly journals Preparation of Nano Ink Using Cobalt Ferrite and Barium Titanate for Printed Electronic Devices

2020 ◽  
Vol 3 (10) ◽  
pp. 132-135
Author(s):  
Emy Rose Peter ◽  
Jismon Sebastian ◽  
Swapna S. Nair
Keyword(s):  
Barium Titanate ◽  
Cobalt Ferrite ◽  
Diffraction Method ◽  
Band Gap Energy ◽  
X Ray Diffraction ◽  
Visible Spectroscopy ◽  
X Ray ◽  
Pure Cobalt ◽  
Uv Visible

Lead in our body is toxic and hazardous. Here leadfree Cobalt ferrite and Barium Titanate inks have been prepared and fabricated. The prepared inks remained stable without agglomeration or condensation during preservation. Cobalt Ferrite and Barium Titanate Nano inks have been characterized using X-ray diffraction method and UV Visible Spectroscopy. By the analysis of X-ray diffraction (XRD), the resultant inks were confirmed to be of pure Cobalt Ferrite and Barium Titanate powders with cubic structure and tetragonal structure respectively. Lattice parameters and grain size have been determined by X-ray diffraction method. UV Visible Spectroscopy analysis has been done to obtain the band gap energy of the prepared inks. The preparation and characterization of Cobalt Ferrite and Barium Titanate Nano inks are comprehensively demonstrated in this paper.

Elimination of pesticides by natural and modified clays

2018 ◽  
Vol 96 (11) ◽  
pp. 975-983
Author(s):  
Faiza Bouazza ◽  
Belkacem Benguella ◽  
Sarah Soussi
Keyword(s):  
Waste Treatment ◽  
Physicochemical Characterization ◽  
Exchange Capacity ◽  
Natural State ◽  
X Ray Diffraction ◽  
X Ray ◽  
Modified Clays ◽  
Scanning Electron Microscopy Measurement ◽  
Microscopy Measurement ◽  
Natural Clays

The objective of this study is the variation of natural and modified clays and their use in industrial waste treatment. For this purpose, we carried out several elimination tests of the effluents by adsorption by using two natural clays from different deposits, namely bentonite located in Maghnia and Djabel Debbagh of Ain Berbar and bentonite coupled with cellulose. The adsorption test was performed on a Decis pesticide. The clays that we tested, in the natural state and in the modified state, are the object of a mineralogical and physicochemical characterization by various techniques of analysis: X-ray diffraction, chemical composition, spectroscopy infrared, cation exchange capacity, scanning electron microscopy, measurement of specific surface area, and various adsorption tests concerning kinetics and capacity, as well as kinetic and thermodynamic modeling and adsorption isotherms. The results showed the practical use of clays for the decontamination of waters contaminated by organic pollutants.

scholarly journals Photoluminescent Properties of Hydroxyapatite and Hydroxyapatite/Multi-Walled Carbon Nanotube Composites

Crystals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 832
Author(s):  
Edna X. Figueroa-Rosales ◽  
Javier Martínez-Juárez ◽  
Esmeralda García-Díaz ◽  
Daniel Hernández-Cruz ◽  
Sergio A. Sabinas-Hernández ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Hexagonal Phase ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Multi Walled Carbon Nanotube ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites ◽  
Co Precipitation ◽  
Functionalized Mwcnts

Hydroxyapatite (HAp) and hydroxyapatite/multi-walled carbon nanotube (MWCNT) composites were obtained by the co-precipitation method, followed by ultrasound-assisted and microwave radiation and thermal treatment at 250 °C. X-ray diffraction (XRD) confirmed the presence of a hexagonal phase in all the samples, while Fourier-transform infrared (FTIR) spectroscopy elucidated the interaction between HAp and MWCNTs. The photoluminescent technique revealed that HAp and the composite with non-functionalized MWCNTs present a blue luminescence, while the composite with functionalized MWCNTs, under UV-vis radiation shows an intense white emission. These findings allowed presentation of a proposal for the use of HAp and HAp with functionalized MWCNTs as potential materials for optoelectronic and medical applications.

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