Processing and optical characterization of lead calcium titanate borosilicate glass doped with germanium

Gautam, Chandkiram; Das, Sangeeta; Gautam, Satyam Shivam; Madheshiya, Abhishek; Singh, Archana

doi:10.1016/j.jpcs.2017.12.038

Cited by 27 publications

(6 citation statements)

References 41 publications

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“…e measurements of optical transmission were conducted within the wavelength ranging between 300 and 900 nanometers. e value of optical bandgap is expressed as follows [26]:…”

Section: Methodsmentioning

confidence: 99%

Electrocatalytic Properties of Calcium Titanate, Strontium Titanate, and Strontium Calcium Titanate Powders Synthesized by Solution Combustion Technique

Jongprateep

Sato

Techapiesancharoenkij

et al. 2019

Advances in Materials Science and Engineering

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Calcium titanate (CaTiO3), strontium titanate (SrTiO3), and strontium calcium titanate (SrxCa1−xTiO3) are widely recognized and utilized as dielectric materials. Their electrocatalytic properties, however, have not been extensively examined. The aim of this research is to explore the electrocatalytic performance of calcium titanate, strontium titanate, and strontium calcium titanate, as potential sensing materials. Experimental results revealed that CaTiO3, SrTiO3, and Sr0.5Ca0.5TiO3 powders synthesized by the solution combustion technique consisted of submicrometer-sized particles with specific surface areas ranging from 4.19 to 5.98 m2/g. Optical bandgap results indicated that while CaTiO3 and SrTiO3 had bandgap energies close to 3 eV, Sr0.5Ca0.5TiO3 yielded a lower bandgap energy of 2.6 eV. Cyclic voltammetry tests, measured in 0.1 M sodium nitrite, showed oxidation peaks occurring at 0.58 V applied voltage. The highest peak current was observed in Sr0.5Ca0.5TiO3 powder. The superior electrocatalytic performance of Sr0.5Ca0.5TiO3 might be attributed to lower bandgap energy, which consequently facilitates higher electron transfer. Electrocatalytic performance of Sr0.5Ca0.5TiO3 was subsequently reexamined in a wider concentration range of sodium nitrite. The results revealed that the material responded linearly to nitrite solution in the range of 0.1 mM to 0.1 M and exhibited sensitivity ranging from 3.117 to 0.040 μA/mM, in the entire tested nitrite concentrations. The results suggest that Sr0.5Ca0.5TiO3 could also be used for nitrite detection.

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“…e measurements of optical transmission were conducted within the wavelength ranging between 300 and 900 nanometers. e value of optical bandgap is expressed as follows [26]:…”

Section: Methodsmentioning

confidence: 99%

Electrocatalytic Properties of Calcium Titanate, Strontium Titanate, and Strontium Calcium Titanate Powders Synthesized by Solution Combustion Technique

Jongprateep

Sato

Techapiesancharoenkij

et al. 2019

Advances in Materials Science and Engineering

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“…This conclusion is supported by a physical parameter that we discuss in density. Every sample has a lower Urbach energy (Eu) than their optical band gap energy (Eg), and an increase in Eu suggests that sample imperfections are also rising [12,13]. A800 glass has the highest Eu, while smaller Eg, indicating that the glass is more disordered.…”

Section: Uv-visible Spectroscopy Analysismentioning

confidence: 99%

Physical, optical, and mechanical properties of commercially available windshield glasses using various cars

Kumar

Kumar²,

Singh³

2023

J. Phys.: Conf. Ser.

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Windshield glasses of Maruti Alto 800 (A800), Hyundai i20 (H20), and Maruti Suzuki Eeco (SE) are taken from an automotive repair shop for investigating their physical, optical, and mechanical properties to check their durability. These glasses are amorphous, which is confirmed by X-ray diffraction (XRD). Energy dispersive spectroscopy confirms that the windshield glasses contain SiO2, Na2O, MgO, CaO, Al2O3, and K2O in variable atomic percentages. The optical bandgap, refractive index, and Urbach energy are calculated using UV-Vis spectroscopy. The highest optical band gap is observed for SE. Micro Vickers hardness test is used to study the fracture toughness and hardness of the glasses. It is found that H20 has the highest hardness as well as toughness in all the windshield glasses.

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“…In X-ray photoelectron spectroscopy, the valence states of germanium corresponding to different binding energies are shown in Table 4 [40][41][42][43][44][45][46][47][48][49][50][51][52][53].…”

Section: Xps Spectroscopy Analysismentioning

confidence: 99%

The States and Properties of Germanium in Sulfuric Acid Solution

Song

Liang

et al. 2023

Metals

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In recent years, with the development of science and technology, the strategic position of germanium is becoming more and more important, and the global demand for germanium is also increasing. At present, there is no unified description of the existence form of germanium in solutions. Based on the current mainstream acid leaching process of germanium, this paper studies the existing form and properties of germanium in sulfuric acid solutions. Through the characterization and analysis of Raman, FTIR, and XPS of three concentrations of pure germanium solution, it is clear that germanium mainly exists in the form of H2GeO3 and some Ge4+ in sulfuric acid solution. Through the Tyndall effect and zeta potential, it is determined that H2GeO3 exists in the form of colloid in sulfuric acid solution. With the increase of germanium concentration, H2GeO3 will polymerize in a sulfuric acid solution to form polygermanic acid, and the H2GeO3 colloidal dispersion system becomes more stable. This study clarifies the existing form and properties of germanium in sulfuric acid solution, which is of great significance to the leaching extraction of germanium-containing materials and the development of the germanium industry.

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Processing and optical characterization of lead calcium titanate borosilicate glass doped with germanium

Cited by 27 publications

References 41 publications

Electrocatalytic Properties of Calcium Titanate, Strontium Titanate, and Strontium Calcium Titanate Powders Synthesized by Solution Combustion Technique

Electrocatalytic Properties of Calcium Titanate, Strontium Titanate, and Strontium Calcium Titanate Powders Synthesized by Solution Combustion Technique

Physical, optical, and mechanical properties of commercially available windshield glasses using various cars

The States and Properties of Germanium in Sulfuric Acid Solution

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