IR and Raman Spectra Properties of Bi&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;O&amp;lt;sub&amp;gt;3&amp;lt;/sub&amp;gt;-ZnO-B&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;O&amp;lt;sub&amp;gt;3&amp;lt;/sub&amp;gt;-BaO Quaternary Glass System

He, Feng; He, Zijun; Xie, Jianliang; Li, Yuhui

doi:10.4236/ajac.2014.516121

Cited by 139 publications

(7 citation statements)

References 29 publications

(26 reference statements)

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“…[BiO 6 ] and [BiO 3 ] unit vibrations and Ba 2+ in the glass matrix cause the 120-135 cm −1 bands intensify and shift to higher wavenumbers as BaO content rises. 37 The band at 403 cm −1 is related to the stretching vibration of Bi-O-Bi bonds in [BiO 6 ] and/or [BiO 3 ] units, indicating bismuth ions as network formers. 35 In addition, the vibration peak of [ZnO 4 ] units at 254 cm −1 weakens in the spectra, indicating that Zn 2+ exists as [ZnO 4 ] and partially participates in glass network formation.…”

Section: Resultsmentioning

confidence: 99%

“…Figure 4B and Table S2 showed the Raman spectra of the glass samples determined at 50–2000 cm −1 . [BiO 6 ] and [BiO 3 ] unit vibrations and Ba 2+ in the glass matrix cause the 120–135 cm −1 bands intensify and shift to higher wavenumbers as BaO content rises 37 . The band at 403 cm −1 is related to the stretching vibration of Bi‐O‐Bi bonds in [BiO 6 ] and/or [BiO 3 ] units, indicating bismuth ions as network formers 35 .…”

Section: Resultsmentioning

confidence: 99%

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Tuning the thermal and insulation properties of bismuth borate glass for SiC power electronics packaging

Chen,

Zhang

et al. 2023

J Am Ceram Soc.

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Silicon carbide (SiC) power devices are attracting significant attention due to their outstanding stability in high‐voltage, high‐temperature, and high‐frequency environments. To replace toxic Pb‐based glass, there is an urgent need to develop Pb‐free glass for SiC power device encapsulation, considering its superior electrical insulation properties and processing capabilities. Here, we developed a Bi‐based glass for effective encapsulation practical of SiC power devices. By increasing the content of glass modifier BaO, the structure of bismuth borate glass can be tuned to reduce glass network density, leading to the transition of structural units from [BO4] to [BO3]. The softened temperature is reduced to 363.4°C with the BaO content increasing to 15 mol%. After encapsulating the SiC power devices using Bi‐based glass, the glass demonstrated a reverse breakdown voltage of 650 V and an extremely low leakage current. Therefore, our work provided a route for adapting Pb‐free‐based low‐melting glass for encapsulating SiC devices and offered potential for advanced semiconductor packaging.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Tuning the thermal and insulation properties of bismuth borate glass for SiC power electronics packaging

Chen,

Zhang

et al. 2023

J Am Ceram Soc.

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“…The bending vibration of Zn-O in ZnO4 can be identified at 400-840 cm −1 bands region [22]. Also, these bands are due to the symmetric breathing vibrations of pentaborate groups and metaborate rings [23]. Bands at 852-1176 cm −1 belong to numerous functional groups of B2O3 such as symmetric breathing vibrations of a ring containing BO3 units replaced by BO4 tetrahedral, bending vibrations of B-O-B bridges in metaborate groups of BO3 units, B-O-B and B-O vibrational modes in orthoborate groups of BO3 units and B-O bond stretching in BO4 groups [18,24,25].…”

Section: Structural Propertiesmentioning

confidence: 97%

Investigation of Structural, Thermal Properties and Shielding Parameters of Borosilicate Glasses Doped with Dy3+/ Tb3+ Ions for Gamma and Neutron Radiation Shielding Applications

Abbas

Baki

Leng

et al. 2021

ARFMTS

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In this study, borosilicate host (H) and seven (S1-S7) samples are prepared by traditional melt-quenching technique. The samples are singly (S1, S2) and doubly (S3-S7) doped with deferent contents of Tb3+ and Dy3+ ions. All samples are analyzed and characterized by XRD (x-ray diffraction), ATR-FTIR (Attenuated total Reflectance-Fourier transform infrared) spectroscopy, TGA/DSC (Thermogravimetric analysis/Differential scanning calorimetry), and Raman spectroscopy. Moreover, the radiation shielding parameters of mentioned glasses such as mass attenuation (?/?), mean free path (MFP), and half-value layer (HVL) are evaluated within the energy of 0.015MeV-15MeV. These parameters are theoretically investigated and evaluated by using XCOM, WINXCOM, and Phy-X programs in addition to the other relevant equations. The ATR-FTIR measurement and Raman spectroscopy results confirmed the unit structure of BO3 and BO4 groups as the main compound as well as the Aluminum-oxide (Al-O-Al) and zinc-oxide (ZnO4) bonds. The transition (Tg), onset crystallization (Tx), crystallization (Tc) temperatures, and weight loss were identified from DSC and TGA findings, respectively. Also, the prepared glass shows good stability against crystallization, as reflected by (?T) variation. Furthermore, the radiation shielding parameter findings show good enhancement of the performance of the samples. However, upon these findings, one can say that these glasses could be used and utilized for radiation shielding purposes.

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“…The absorption band at around 1057 cm À 1 is possibly attributed to a distinct type of vibration associated with Bi 2 O 3 interactions. [40] In the FTIR plot of Co with sharp spots. These spots are the result of electron diffraction that occurs when electrons pass through the spinel nanoparticles in varying orientations.…”

Section: Ftirmentioning

confidence: 99%

Effortless Fabrication of Bi₂O₃‐Co₃O₄ Nanocomposite Catalyst: Harnessing Photocatalytic Power for Efficient Cationic Dye Degradation

Pradhan,

Nayak,

Kanar

et al. 2024

ChemistrySelect

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A cost‐effective and simple co‐precipitation approach was used to create an efficient photocatalyst Co3O4‐Bi2O3 with identical stoichiometry (1 : 1 of both Co3O4 and Bi2O3). XRD, FTIR, TEM, SEM‐EDS, XPS, UV‐DRS, PL, BET, and TGA were used to characterize the produced material‘s structural and optical properties. The presence of a single phase spinel structure with a distinctive plane (311) was verified by the XRD peak of 2 at 36.9° for Co3O4‐Bi2O3. The SEM pictures revealed clustered consolidated spheres, suggesting particle homogeneity and high interconnectedness. The HR‐TEM and SAED pictures revealed an average crystallite size of 28 nm for the Co3O4‐Bi2O3 heterojunction. The UV‐DRS spectral data demonstrated a 2.1 eV reduction in band gap energy for Co3O4‐Bi2O3 (whereas Co3O4 is 2.4 eV and Bi2O3 is 2.7 eV). Under solar light irradiation, pristine Co3O4, Bi2O3, and Co3O4‐Bi2O3 composites were investigated for photocatalytic degradation of Methylene Blue (MB) and Malachite green (MG) dyes. By adjusting factors such as pH, starting dye concentration, catalyst dosage, and agitation duration, the optimal efficiency was determined. The acquired results showed Co3O4‐Bi2O3 ′s superior activity over both precursors. The composite obtained maximal degradation of 98 % (at pH=11) and 97 % (at pH=9) for MB and MG, respectively. The enhanced photo degradation activity of Co3O4‐Bi2O3 can be due to larger visible light absorption, increased surface area, and decreased h+/e− recombination. The reactive species trapping study was performed to determine the importance of superoxide and hydroxyl radicals during photo degradation. Dye degradation was governed by a pseudo‐first‐order kinetic model. The reusability and stability of Co3O4‐Bi2O3 were confirmed by utilizing the same material for five consecutive runs with both MB and MG dyes. Mass spectra analysis provided insights into the successful degradation of dyes, elucidating intermediate products. The synthesized Co3O4‐Bi2O3 nanocomposite offers unrivalled advantages in terms of structural and optical properties, superior photocatalytic activity, and remarkable stability, making it a promising candidate for efficient dye degradation applications without the formation of toxic by‐products.

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IR and Raman Spectra Properties of Bi<sub>2</sub>O<sub>3</sub>-ZnO-B<sub>2</sub>O<sub>3</sub>-BaO Quaternary Glass System

Cited by 139 publications

References 29 publications

Tuning the thermal and insulation properties of bismuth borate glass for SiC power electronics packaging

Tuning the thermal and insulation properties of bismuth borate glass for SiC power electronics packaging

Investigation of Structural, Thermal Properties and Shielding Parameters of Borosilicate Glasses Doped with Dy3+/ Tb3+ Ions for Gamma and Neutron Radiation Shielding Applications

Effortless Fabrication of Bi₂O₃‐Co₃O₄ Nanocomposite Catalyst: Harnessing Photocatalytic Power for Efficient Cationic Dye Degradation

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IR and Raman Spectra Properties of Bi&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;-ZnO-B&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;-BaO Quaternary Glass System

Cited by 139 publications

References 29 publications

Tuning the thermal and insulation properties of bismuth borate glass for SiC power electronics packaging

Tuning the thermal and insulation properties of bismuth borate glass for SiC power electronics packaging

Investigation of Structural, Thermal Properties and Shielding Parameters of Borosilicate Glasses Doped with Dy3+/ Tb3+ Ions for Gamma and Neutron Radiation Shielding Applications

Effortless Fabrication of Bi2O3‐Co3O4 Nanocomposite Catalyst: Harnessing Photocatalytic Power for Efficient Cationic Dye Degradation

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About

IR and Raman Spectra Properties of Bi<sub>2</sub>O<sub>3</sub>-ZnO-B<sub>2</sub>O<sub>3</sub>-BaO Quaternary Glass System

Effortless Fabrication of Bi₂O₃‐Co₃O₄ Nanocomposite Catalyst: Harnessing Photocatalytic Power for Efficient Cationic Dye Degradation