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.

Structural Studies of Lead Sodium Borate Glasses

2010 ◽  
Vol 93-94 ◽  
pp. 439-442
Author(s):  
Pruittipol Limkitjaroenporn ◽  
Jakrapong Kaewkhao ◽  
Suparat Tuscharoen ◽  
Pichet Limsuwan ◽  
Weerapong Chewpraditkul
Keyword(s):  
Molar Volume ◽  
Glass Network ◽  
Sodium Borate ◽  
Borate Glasses ◽  
Structural Studies ◽  
Melt Quenching ◽  
Network Modifier ◽  
Ir Analysis ◽  
Quenching Method ◽  
Glass Compositions

Glass compositions xPbO : 20Na2O : (80-x)B2O3 (x = 5,10,15,20,25,30,35,40,45,50 and 55 %mol) have been prepared using melt-quenching method. The density and molar volume of these glass samples have been found to be compositional dependent. The results indicate that PbO acts on the glass structures were different between the range 0≤ x ≤ 20 %mol and beyond x = 20 %mol (with inflection at x = 20 %mol). These due to the PbO can enter the glass network both as a network modifier and also as a network former. This role depends on the type of bond between lead and oxide. These results are interpreted in term of IR analysis.

scholarly journals Optical Properties of Bismuth Borate Glasses Doped with Zinc and Calcium Oxides

2020 ◽  
Vol 9 (1) ◽  
pp. 46-54
Author(s):  
M. Y. Hassaan ◽  
H. A. Saudi ◽  
Hossam M. Gomaa ◽  
Ammar S. Morsy
Keyword(s):  
Molar Volume ◽  
Glass Network ◽  
Oxide Glass ◽  
X Ray Diffraction ◽  
Bismuth Borate ◽  
B2o3 Content ◽  
Uv Visible ◽  
Quenching Method ◽  
Fast Quenching ◽  
Borate Oxide

Some bismuth-borate oxide glass' samples were prepared by the fast quenching method, where B2O3 was replaced with equal concentrations of ZnO and CaO. X-ray diffraction (XRD) was used to examine the internal structure and Fourier transform infrared (FTIR) to identify building units and bonds throughout the studied structural matrices. XRD showed that all samples have short range order structural nature, while FTIR demonstrated some of Zn2+ acted as glass network formers and all Bi3+ acted as glass. UV-visible measurements and calculations showed a decreasing in the energy band gap from 3.83 eV to 1.73 eV with decreasing B2O3 content. Also with decreasing B2O3 content, both real refractive index and metallization factor decreased from 3.1 to 1.9 and from 0.56 to 0.71, respectively. For the studied glass' samples, density and molar volume showed inverted behaviors, where the density decreased while the molar volume increases with decreasing B2O3.

Physical and Structural Properties of Dysprosium Doped Barium Borate Glass

2019 ◽  
Vol 290 ◽  
pp. 46-52 ◽  
Author(s):  
Norihan Yahya ◽  
Mardhiah Abdullah ◽  
Mohamed Najmi Naquib Mohamed Zainal Abidin ◽  
Azman Kasim ◽  
Azhan Hashim
Keyword(s):  
Molar Volume ◽  
Structural Properties ◽  
Borate Glass ◽  
Glass Network ◽  
Barium Borate ◽  
X Ray Diffraction ◽  
Melt Quenching ◽  
X Ray ◽  
Amorphous Nature ◽  
Barium Borate Glass

Five distinguish glass samples were prepared by melt quenching technique of the composition (81-x)H3BO3-19BaCO3-xDy2O3 with x = 0, 0.2, 0.4, 0.6 and 0.8 mol%. The effect of Dy3+ to the barium borate glass can be investigated in terms of their physical properties such as density, molar volume and oxygen packing density. The structural properties were analyzed by X-Ray Diffraction (XRD) technique and Fourier Transform Infrared Spectroscopy (FTIR). The result revealed that the increment of mol% of Dy3+ in the compound generally will increases the density and molar volume of the glass samples. The amorphous nature of the glass system was verified from the XRD spectra pattern. Meanwhile, the FTIR spectra shown the presence of Ba2+, BO3, BO4, B-O-B linkage, H-O-H and isolated borate in the glass network.

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.

The Structural Properties of Trivalent Rare Earth Ions (Er3+) Doped Borotellurite Glass

2014 ◽  
Vol 69 (2) ◽  
Author(s):  
E. S. Nurbaisyatul ◽  
K. Azman ◽  
H. Azhan ◽  
W. A. W. Razali ◽  
A. Noranizah
Keyword(s):  
Molar Volume ◽  
Structural Properties ◽  
Rare Earth Ions ◽  
Physical Parameters ◽  
Absorption Bands ◽  
Bending Vibrations ◽  
Laser Applications ◽  
Stretching Vibration ◽  
Trivalent Rare Earth ◽  
Quenching Method

Six samples of borotellurite glasses with system (80-x)TeO2- 10B2O3 - 10PbO - xEr2O3 (x=0.0, 0.5, 1.0, 1.5, 2.0, 2.5 mol%) have been prepared by using the conventional melt-quenching method. Some basic physical parameters such as density and molar volume were measured. The result reveals that the density and molar volume increases with the increases of mol% of Er2O3. The amorphous nature of the glass has been characterized using X-ray Diffraction (XRD) and all glasses are found to be amorphous in nature. The structure was analysed by FTIR spectroscopy. The FTIR spectra were recorded at room temperature in the frequency range from 650 to 4000  cm-1 using Attenuated Total Reflectance (ATR) method. From the IR results, the absorption bands were found to be in the range 667-669 cm-1, 710-712 cm-1, 880-887 cm-1, 981-997 cm-1 and 1190-1204 cm-1 which correspond to the stretching and bending vibrations mode. The absorption peaks around 1386-1388 cm-1 and 3741-3748 cm-1 which ascribed to the hydroxyl-metal bond and hydroxyl-hydrogen bond stretching vibration also have been observed. The FTIR results demonstrate that the existing of erbium in the composition leads to good structural properties thus creating potential for this glass in laser applications.

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.

On a qualitative model for the incorporation of fluoride nano-crystals within an oxide glass network in oxy-fluoride glass-ceramics

2004 ◽  
Vol 337 (2) ◽  
pp. 191-195 ◽  
Author(s):  
V.K Tikhomirov ◽  
A.B Seddon ◽  
M Ferrari ◽  
M Montagna ◽  
L.F Santos ◽  
...  
Keyword(s):  
Glass Ceramics ◽  
Glass Network ◽  
Fluoride Glass ◽  
Oxide Glass ◽  
Qualitative Model

Silver Nanoparticles Included Er3+/Sm3+ Co-Doped Phosphate Glass: Evaluation of Thermal Stability and Infrared Absorption

2017 ◽  
Vol 268 ◽  
pp. 62-66 ◽  
Author(s):  
S. Rashidah Misron ◽  
Ramli Arifin ◽  
Sib Krishna Ghoshal
Keyword(s):  
Thermal Stability ◽  
Phosphate Glass ◽  
Infrared Absorption ◽  
Glass Network ◽  
Ir Absorption ◽  
Ag Nps ◽  
Bending Vibrations ◽  
Host Matrix ◽  
Stretching Vibrations ◽  
Quenching Method

Three lithium-sodium-phosphate glass samples with molar composition of (48.5–x)P2O5-20Na2O-30Li2O-0.5Sm2O3-1.0Er2O3-xAgNPs (where x = 0.01 g, 0.03 g and 0.05 g) are prepared using melt quenching method. The thermal stability and infrared absorption of synthesized samples are evaluated as a function of Ag NPs contents. Thermal and structural characterizations are made using differential thermal analysis (DTA) and Fourier transformed infrared (FTIR) spectroscopy, respectively. Thermal stability is found to vary in the range of 171 °C to 197 °C. FTIR spectra revealed various characteristic bonding vibrations related to the glass network structures. The IR absorption band around 570 cm-1 is assigned to the P-O-P bending vibrations while the occurrence of bands around 759 cm-1 and 913 cm-1 are allocated to the P-O-P symmetric stretching vibrations. The asymmetric stretching vibrations of (PO3)2- and (PO2)- units are observed around 1045 cm-1 and 1254 cm-1 , respectively. The appearance of a band around 1735 cm-1 is allocated to the free H2O molecules because of moisture attack to the sample. Influences of Ag NPs in the host matrix are analyzed and explained.

The Polarizability and Optical Characteristics of Zinc Phosphate Glasses Doped Terbium Embedded with Copper Oxide Nanoparticles

2019 ◽  
Vol 290 ◽  
pp. 35-40 ◽  
Author(s):  
Syariffah Nurathirah S. Yaacob ◽  
M.R. Sahar ◽  
E.S. Sazali ◽  
S. Sulhadi
Keyword(s):  
Refractive Index ◽  
Molar Volume ◽  
Zinc Phosphate ◽  
Glass Network ◽  
High Refractive Index ◽  
Copper Oxide Nanoparticles ◽  
Phosphate Glasses ◽  
X Ray Diffraction ◽  
Cuo Nps ◽  
Vis Spectroscopy

Tuning the concentration of nanoparticles (NPs) to accommodate wider application demanded a better understanding of the physicals and structural properties of the glass. A series of zinc phosphate glasses with the composition of (57-x) P2O5- 40ZnO-3Tb2O3 –xCuO, (0 ≤ x ≤ 2 mol %) has been prepared by melt quenching technique and their physical and optical characterization have been studied. The X-Ray Diffraction technique and UV-Vis Spectroscopy have been used to characterize the glass sample. The XRD confirms the amorphous nature of the prepared glasses. The physical properties of glasses with different CuO NPs such as density, molar volume, refractive index and electronic polarizability are determined. It is found that both density and molar volume decreases with increasing CuO NPs concentration. The optical band gap (4.54 eV-2.96 eV) and the Urbach energy (0.19 eV-0.54 eV) are showing a decreasing trend with the increasing amount of CuO NPs.This is due to the formation of non-bridging oxygen, (NBO) in the glass network. The glass exhibits high refractive index ~2.40 and polarizability ~1.12 ×10-23 cm3 and is useful for solid-state laser and optoelectronic devices.

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