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![Density (í µí¼) and Molar Volume for the [(90 -x) TeO 2 -(x)V 2 O 5 -10Li 2 O] Glass Materials where (x = 20, 30, 40, 50, 60 and 70 mol%).](profile/M-Abdel-Aziz/publication/336126025/figure/fig1/AS:827389072384001@1574276335843/Density-i-i14-and-Molar-Volume-for-the-90-x-TeO-2-xV-2-O-5-10Li-2-O-Glass.png)
Density (í µí¼) and Molar Volume for the [(90 -x) TeO 2 -(x)V 2 O 5 -10Li 2 O] Glass Materials where (x = 20, 30, 40, 50, 60 and 70 mol%).
Source publication
Ternary tellurovanadate glass samples with composition of (90-x) TeO2-xV2O5-10Li2O (x= 20, 30, 40, 50, 60, and 70 mol%) were prepared using melt-quenching technique. The structure analysis was carried out using X-ray diffraction XRD and Raman spectroscopy. The density, molar volume, oxygen molar volume, and oxygen packing density were calculated. V...
Contexts in source publication
Context 1
... physical properties of the glasses system [(90 -x) TeO 2 -(x)V 2 O 5 -10Li 2 O] with different concentration of V 2 O 5 from 20 up to 70 mol%, were investigated by measuring the densities of the glass samples. Fig (4) shows the variation of the density of the ternary glass system and V 2 O 5 mol% concentration and the exact values were collected in the table (2). It can be seen from the figure that the density decreases from 4.58 to 3.41 g.cm -3 with an increase in V 2 O 5 content range from 20 to 70 mol%. ...
Context 2
... molar volume V is a measure of the network compactness. Fig (4) shows that, the variation of the molar volume V of the present ternary glass with V 2 O 5 mol% concentration. The molar volume of these systems increases from 33.0 to 47.57 cm 3 with increasing V 2 O 5 as shown in the table (2). ...
Context 3
... physical properties of the glasses system [(90 -x) TeO 2 -(x)V 2 O 5 -10Li 2 O] with different concentration of V 2 O 5 from 20 up to 70 mol%, were investigated by measuring the densities of the glass samples. Fig (4) shows the variation of the density of the ternary glass system and V 2 O 5 mol% concentration and the exact values were collected in the table (2). It can be seen from the figure that the density decreases from 4.58 to 3.41 g.cm -3 with an increase in V 2 O 5 content range from 20 to 70 mol%. ...
Context 4
... molar volume V is a measure of the network compactness. Fig (4) shows that, the variation of the molar volume V of the present ternary glass with V 2 O 5 mol% concentration. The molar volume of these systems increases from 33.0 to 47.57 cm 3 with increasing V 2 O 5 as shown in the table (2). ...
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... SERS is a promising tool for chemical analysis, and it has been widely used in analytical chemistry, environmental monitoring, and biomedicine [1]. To date, Ag nanomaterials have shown excellent SERS performance, due to its surface plasmon resonance (SPR) effect. ...
Two main poly(vinyl alcohol)/silver (PVA/Ag) nanofibers surface-enhanced Raman spectroscopy (SERS) substrates were prepared through the combination of electrospinning and ultraviolet (UV) reduction, the properties were also compared and investigated in this work. In Method 1, PVA/AgNO3 solution was reduced by UV firstly, then the PVA/Ag nanofibers were obtained by electrospinning of PVA/Ag nanoparticles (NPs) solution; In Method 2, PVA/AgNO3 solution were directly to electrospin, then followed by the reduction process of UV with the PVA/AgNO3 nanofibers. The PVA/Ag nanofibers were characterized by SEM, TEM, XPS, UV-vis, FTIR and wetting angle. The PVA/Ag nanofibers prepared by Method 1 retained the hydrophilic of PVA, herein, it taked less time to detect Rhodamine 6G (R6G) aqueous solution than Method 2. And the Raman spectra of probe R6G showed that the PVA/Ag nanofibers prepared by Method 1 could reach the SERS detection limit of 10-5 M with less AgNO3 (4 wt%) than Method 2 (16 wt%). These findings provide a more effective method for the preparation of PVA/Ag nanofibers SERS substrates, and will expand the application range of PVA/Ag composite nanofibers.
... The spectra of as prepared glass samples are normalized to keep the integrated intensity same. The broad bands in Raman spectra gives an idea towards disordered nature of glass matrix [62] (also agree with XRD analysis). The Raman spectra of glasses containing bismuth oxide are composed of three regions i.e. (i) 10 0-30 0 cm −1 (due to heavy metal ions vibrations), (ii) 30 0-70 0 cm −1 (bridged-anion modes), and (iii) non-bridging anion modes at higher wavenumber [ 10 , 39 , 63 ]. ...
Transition Metal Ion (TMI) doped barium-boro-bismuthate glasses with composition
(10-x)V2O5-xMoO3-25BaO-20B2O3-45Bi2O3 (with x = 0, 1, 3, 5, and 8 mol%) were synthesized using melt quench technique. As synthesized and annealed (at 450°C for 5 hours) compositions were studied by analysing their physical and structural behaviour. The broad XRD profiles of as synthesized glasses confirmed the formation of glassy phase whereas the ordered profiles of annealed compositions depicted the formation of nano-crystalline Bi45BO69 phase (with crystallite size <50 nm) inside the glass matrix. Density of as prepared glass samples increase with increase in concentration of MoO3 at cost of V2O5. The presence of [BiO6], [BiO3], [BO3], and [BO4] structural units inside the glass matrix is depicted by FTIR and confirmed by Raman spectroscopy. The increase in calculated values of N4 indicating decrease in concentration of Non-Bridging Oxygen (NBO), on addition of MoO3. Increase in density and decrease in concentration of NBO, indicated contraction of size which agrees with compositional variation N4. The microstructure and elemental analysis for annealed glass samples typical (MVBBB(x=0, 2 and 5)) were investigated using FESEM/ EDX technique. The recorded FESEM micrographs of annealed samples, shows crystalline growth at annealed temperature and agrees with XRD analysis.
Semiconducting transition metal oxide tellurite glasses: xV2O5-(100-x)TeO2 (x = 10, 30, 40, 50 and 55, 60, 65 and 70 mol%), xCuO-50V2O5-(50-x)TeO2 (x = 1, 3 and 5 mol%), xFe2O3-(100-x)TeO2 (x = 10 and 20 mol%) and xFe2O3-45V2O5-(55-x)TeO2 (x = 5 and 10 mol%) were prepared by normal and splat quenching techniques. The thermal, electrical and structural properties of glasses were characterized. The highest electronic conduction is in the xV2O5-(100-x)TeO2 glasses; the room temperature conductivity of this glass series increases from 9.21×10⁻⁹ Ω⁻¹m⁻¹ to 3.30×10⁻⁴ Ω⁻¹m⁻¹ upon increasing V2O5 concentration from 10 to 70 mol%. Iron tellurite glasses also show a large enhancement of conductivity with an increase in Fe2O3 concentration. The glass transition temperature (Tg) of vanadium tellurite glasses decreases, while those of iron tellurite glasses increases with an increase in V2O5 and Fe2O3 concentrations respectively. The incorporation of Cu and Fe ions in xV2O5-(100-x)TeO2 increases Tg significantly but it suppresses the electrical conductivity. Vanadium tellurite glasses show the growth of α-TeO2 crystals in the glass matrix on irradiation with 488 nm Ar ion laser. Transition metal oxide tellurite glasses have potential application as thermal and body temperature sensors due to their large temperature coefficient of resistance in the range of -3.04 to -2.26 % K⁻¹.
