Simulation of the XRD patterns, structural properties of a synthetic Na-Hectorite exchanged Cu2+and Ca2+

2007 ◽  
Vol 2007 (suppl_26) ◽  
pp. 503-508
Author(s):  
M. S. Karmous ◽  
W. Oueslati ◽  
H. Ben Rhaiem ◽  
J. L. Robert ◽  
A. Ben Haj Amara
Keyword(s):  
Structural Properties ◽  
Xrd Patterns

Study the Effect of the Volumetric Ratio of Alq3 on the Optical and Structural Properties of the Alq3:NPD Blend for the UV Photodetector Applications

2021 ◽  
Vol 16 (2) ◽  
pp. 281-287
Author(s):  
Alaa Y. Mahmoud
Keyword(s):  
Structural Properties ◽  
Active Layer ◽  
Energy Gap ◽  
Optical Energy Gap ◽  
Uv Photodetector ◽  
Optical Energy ◽  
Uv Photodetectors ◽  
Energy Bandgap ◽  
Xrd Patterns ◽  
Optical Energy Bandgap

The effect of the volumetric ratio of the tris(8-hydroxyquinoline) aluminum (Alq3) on its blend with the N,N'-Di [(1-naphthyl)-N,N'-diphenyl]-(1,1'-biphenyl)-4,4'-diamine (NPD) (Alq3:NPD) is investigated and optimized for the UV photodetectors fabrication. The optical and structural properties of Alq3:NPD blend with different volumetric ratios 1:1, 2:1, and 3:1 is studied in the context of the absorbance, transmittance, optical energy gap and XRD patterns. Results show that the absorbance is increased by 11% at A = 260 nm with the increase in the volumetric ratio. In contrast, the optical energy bandgap that is extrapolated from the Tauc’s plot is decreased with the increase in the volumetric ratio, and the 2:1 ratio shows the lowest energy in the UV region. In terms of the XRD investigation, the 2:1 volumetric ratio shows the highest intensity for the crystallinity peak at 36.6°. The fabricated photodetector with a different volumetric ratio of the active layer Alq3:NPD blend shows the best performance with the ratio 2:1.

The Effect of PbO on the Physical and Structural Properties of Borate Glass System

2016 ◽  
Vol 846 ◽  
pp. 177-182 ◽  
Author(s):  
Mardhiah Abdullah ◽  
S.N.E. Shafieza ◽  
Azman Kasim ◽  
Azhan Hashim
Keyword(s):  
Molar Volume ◽  
Structural Properties ◽  
Glass Network ◽  
Oxide Glass ◽  
Sodium Borate ◽  
Ftir Spectral Analysis ◽  
Good Reputation ◽  
Quenching Method ◽  
Xrd Patterns ◽  
Research World

Borate is one of the most popular oxide glass being used in glass research world wide. Due to good reputation, therefore lead sodium borate glasses with compositions (90 - x) B2O3 + 10ZnO + xPbO (where = 15, 20, 25, 30 and 35 mol %) have been prepared by using melt-quenching method. In this work, their physical and structural properties with respect to PbO content has been investigated. The densities of these glass samples were increased from 3946.2 kg/m3 to 5107.2 kg/m3 with an increase in PbO concentration. The molar volume are found to vary from 23.78 × 10-6 m3mol-1 to 24.39 × 10-6 m3mol-1 with respect to PbO content as well. The density and molar volume show inversed result respectively. The FTIR spectral analysis indicates that with the addition of PbO contents in the glass network, structural units of BO3 are transformed in BO4. There are no sharp peaks were observed in XRD patterns of the glass samples which confirmed the amorphous nature of the glass. Meanwhile, the micro hardness of these glass samples were also increased from 189 Pa to 355 Pa with increases on PbO content. The results will be discussed and presented in details.

scholarly journals Structural and Electrical Properties of Silicon Nitride Ceramic

1970 ◽  
Vol 7 (1) ◽  
pp. 50-59 ◽  
Author(s):  
M Hosneara ◽  
A Hasnat ◽  
AH Bhuyan
Keyword(s):  
Weight Gain ◽  
Silicon Nitride ◽  
Electrical Properties ◽  
Structural Properties ◽  
Lattice Parameters ◽  
X Ray Diffraction ◽  
Silicon Nitride Ceramic ◽  
Structural And Electrical Properties ◽  
Xrd Patterns ◽  
Good Agreement

The effects of structural properties on the d.c. and a.c. electrical properties of different weight gain reaction bonded silicon nitride (RBSN) have been studied in this work. The degree of nitridation is assessed by the ‘weight gain’ of the ceramic, the percentage by which the weight is increased in the nitriding reaction. From X-ray diffraction (XRD) patterns, it is observed that a higher degree of nitradation sample has strong α-silicon nitride peaks. Intensity of α-silicon nitride peaks decreases with decreases weight gain. The higher degrees of nitridation, the samples have less significant Si peak. XRD patterns were recorded to calculate the lattice parameters of RBSN. The lattice parameters for three weight gain RBSN samples are found to be a =b = 7.7727 Å, c= 5.6565 Å (26% weight gain), a=b= 7.6272 Å, c= 5.6374 Å (42% weight gain) and a=b=7.6158 Å, c= 5.7732 Å (58.27% weight gain) and are in good agreement with the reported values from XRD patterns. Porosity (%) and surface morphology was observed by SEM. Keywords: Silicon nitride ceramic; electrical properties; structural properties.   DOI: http://dx.doi.org/10.3329/diujst.v7i1.9648   Daffodil International University Journal of Science and Technology Vol.7(1) 2012 50-58

OH- Effect on the Growth and Structural Properties of Chemical Bath Deposited ZnS Quantum Thin Films

2013 ◽  
Vol 281 ◽  
pp. 523-526 ◽  
Author(s):  
Liyang Yan Chen ◽  
Chao Fang
Keyword(s):  
Thin Films ◽  
Structural Properties ◽  
Film Growth ◽  
Acidic Solution ◽  
Vital Role ◽  
Sphalerite Structure ◽  
Glass Substrates ◽  
Xrd Patterns ◽  
Zns Films ◽  
Deposited Films

Zinc sulfide (ZnS) quantum thin films have been deposited from precursors with a variety of OH- concentration onto microscope glass substrates by chemical bath deposition method. The growth and structural properties have been investigated. XRD patterns of ZnS films obtained from acidic solution showed a favorable wurtzite structure, while for those obtained from alkaline solution, showed a sphalerite structure. The growth studied of the deposited films has also shown that the OH- played a vital role in nucleation and the film growth.

Physical and Structural Properties of Neodymium Doped Lithium Boro-Tellurite Glasses

2019 ◽  
Vol 290 ◽  
pp. 53-59
Author(s):  
Yahya Norihan ◽  
Ahmad Ridzwan Bin Ab Rahim ◽  
Mardhiah Abdullah
Keyword(s):  
Structural Properties ◽  
Xrd Analysis ◽  
Ftir Spectra ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
X Ray ◽  
Prepared Glass ◽  
Amorphous Nature ◽  
Quenching Method ◽  
Xrd Patterns

Nd3+ doped lithium borotellurite glasses were successfully been prepared by conventional melt-quenching method with the chemical composition (70.0)B2O3-(5.0)TeO2-(25.0-x) Li2CO3-xNd2O3 (where x = 0.0, 0.2, 0.4, 0.6, 0.8 and 2.0 mol%) by varying the Neodymium content. The physical properties such as density, molar volume and oxygen packing density were measured. The structural properties have been studied through X-ray diffraction (XRD) analysis and Fourier Transform Infrared (FTIR) spectroscopy. The XRD pattern has been used to confirm the amorphous nature of the glass samples. There are no sharp peaks were observed in XRD patterns of the glass samples which confirmed the amorphous nature of the glass. FTIR spectra were used to analyse the functional groups present in the glass samples. The FTIR spectra reveal the presence of B-O-B, B-O, BO3, BO4,Te-O and characteristic of the hydrogen bond in the prepared glass samples.

Simulation of the XRD patterns, structural properties of a synthetic Na-Hectorite exchanged Cu2+and Ca2+

2007 ◽  
Vol 2007 (suppl_26) ◽  
pp. 503-508 ◽  
Author(s):  
M. S. Karmous ◽  
W. Oueslati ◽  
H. Ben Rhaiem ◽  
J. L. Robert ◽  
A. Ben Haj Amara
Keyword(s):  
Structural Properties ◽  
Xrd Patterns

Effect of CdS Thickness on the Optical and Structural Properties of TiO2/CdS Nanocomposite Film

2015 ◽  
Vol 1107 ◽  
pp. 547-552 ◽  
Author(s):  
Ali Kamel Mohsin ◽  
Noriah Bidin
Keyword(s):  
Structural Properties ◽  
Nanocomposite Films ◽  
Root Mean Square Roughness ◽  
Structural And Optical Properties ◽  
The Mean ◽  
Semiconductor Nanocomposites ◽  
Afm Micrographs ◽  
Cds Film ◽  
Xrd Patterns ◽  
Beam Deposition

Efficient modification of energy band gap to absorb visible light in TiO2 semiconductor nanocomposites is challenging. The effect of the varying CdS thickness (50-100 nm) on the structural and optical properties of TiO2/CdS nanocomposite films (NCF) grown by electron beam deposition is reported. The surface morphology and optical behaviors are characterized via XRD, AFM and UV-Vis measurements. The lattice parameters and nanocrystallinity of TiO2/CdS NCF determined from XRD patterns are found to increase gradually with the increase of CdS thickness. The mean particles size estimated using Scherer formula and AFM micrographs lies in the range of 10.29 -59.71 nm for various CdS thickness. The increase in root mean square roughness with the increase of CdS thickness is revealed by AFM micrographs. The UV-Vis measurement shows a significant enhancement in the absorption of NCFs in the range of 340 to 500 nm due to the addition of a small portion of CdS. Interestingly, Our results suggest that the optical and structural properties of TiO2 films can significantly be improved and finely tuned by varying the thicknesses of CdS film useful for applications.

scholarly journals SYNTHESIS AND STRUCTURAL PROPERTIES OF CHITIN/CLAY BIO-NANOCOMPOSITES

2021 ◽  
Vol 55 (5-6) ◽  
pp. 659-665
Author(s):  
NEVIN ÇANKAYA
Keyword(s):  
Structural Properties ◽  
Cell Walls ◽  
Trichloroacetic Acid ◽  
Low Cost ◽  
Environmentally Friendly ◽  
Sem Images ◽  
Loading Rates ◽  
Ft Ir ◽  
Sustainable Materials ◽  
Xrd Patterns

Chitin, which is composed of 2-acetamido-2-deoxy-D-glucopyranose (N-acetyl-D-glucosamine) units linked by β-(1,4) linkage, makes up the cell walls of fungi, the exoskeletons of arthropods, such as crustaceans (e.g., crabs, lobsters and shrimps) and insects, the radulae of mollusks, and the beaks of cephalopods, including squid and octopuses. Both chitin and clay are sustainable materials, as they are low cost, biodegradable and readily available. That is why, in this study, sodium montmorillonite (CNa) nanoclay and 1-140 (C15A) organo-nanoclay were used as nanofiller support in the preparation of chitin/clay bio-nanocomposites. Trichloroacetic acid was used to dissolve the chitin and to disperse the clay in the chitin solution. Chitin/CNa and chitin/C15A bio-nanocomposites were synthesized by the solution-induced intercalation method. The effect of the nanofiller on the bio-nanocomposite was investigated by varying the loading rates as follows: 1, 3 and 5% by weight. The composites were characterized by FT-IR, XRD and SEM methods. The XRD patterns and SEM images showed that the clay dispersion in the chitin biopolymer matrix presented an exfoliated structure. It was noted that neither the nanoclay nor the organo-nanoclay used in the synthesis of the bio-composites affected the formation of the exfoliated structure. This result can be attributed to the use of a low amount of clay. These newly synthesized bio-composites, which are environmentally friendly and sustainable, can find application in many different areas in the future.

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