FTIR and Raman spectroscopy studies of ZnO-doped BaO⋅2B2O3 glass matrix

Осипов, А. А.; Осипова, Л. М.; Hruška, Branislav; Осипов, А. А.; Liška, Marek

doi:10.1016/j.vibspec.2019.05.003

Cited by 43 publications

(7 citation statements)

References 45 publications

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“…In addition, only a weak peak appeared when the BaO concentration was 9 mol%. The bands at 950 and 1200–1500 cm −1 were attributed to the B–O − symmetric stretching vibration of orthoborate groups and the B–O − vibrations of orthoborate anions or pyroborate groups, 20–22 respectively. As shown in Figure 1A, the peak shifts around 950 cm −1 were increased, and the band at 1200–1500 cm −1 center moved toward more energetic vibrations, which can be explained that B–O − vibration enhancement can compensate for the decrease of the characteristic bands at 793 [BO 4 ] and 855 cm −1 [SiO 4 ] 19,20 .…”

Section: Resultsmentioning

confidence: 99%

“…At present, the sintering temperature of the copper terminal electrode paste is between 750 and 850 • C. The wetting performance was monitored by a high-temperature microscope with increasing temperature up to 800 • C at 10 • C/min. [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] Figure 4 summarizes the results of the status of the glass powder pile during the 400-800 • C sintering process and the contact angle at 800 • C was recorded, which decreased with increasing BaO content.…”

Section: Effect Of Bao Doping On Sintering Wettabilitymentioning

confidence: 99%

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Effect of properties and crystallization behavior of BaO–ZnO–B₂O₃–SiO₂ glass on the electrical conductivity of Cu paste

Chen

Jiang

et al. 2022

J Am Ceram Soc.

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The extensive application of multilayer ceramic capacitors provides an attractive development for terminal electrode pastes. However, the growing requirement for advanced glass materials used in terminal electrode pastes is substantiated. Therefore, to advance the development of electrode pastes, better development and deeper exploration of glass powder are required. Here, a series of BaO-ZnO-B 2 O 3 -SiO 2 (BZBS) glasses were prepared by melt-quenching technique, which are used to investigate the effect of the introduction of BaO on structure and properties of the ZnO-B 2 O 3 -SiO 2 (ZBS) glass. With the introduction of BaO, the relative amount of [BO 4 ] was much less, which made the glass network structure loosen, decreased the glass transition temperature (T g ) and increased the coefficient of thermal expansion of the glass. The decreasing contact angle was observed on the surface of a barium titanate (BaTiO 3 ) substrate. When the BaO content was around 3-7 mol%, the stability of ZBS glass frit could be strengthened by inhibiting the precipitation of Zn 2 SiO 4 crystal. In addition, to further characterize the effect of glass on terminal electrode paste, BZBS glass powder was adopted to prepare copper electrode paste, which was printed on the BaTiO 3 substrate and subsequently fired at 800 • C for 10 min. With the related copper paste containing ZBS glass doped with 7 mol% BaO, the optimum value of acid resistance and sheet resistance (1.99 mΩ) were exhibited, at which the coated copper paste formed a dense conducting layer.

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Section: Resultsmentioning

confidence: 99%

Section: Effect Of Bao Doping On Sintering Wettabilitymentioning

confidence: 99%

Effect of properties and crystallization behavior of BaO–ZnO–B₂O₃–SiO₂ glass on the electrical conductivity of Cu paste

Chen

Jiang

et al. 2022

J Am Ceram Soc.

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“…The broad bands observed at 1620 and 1384 cm –1 for Co–ZnO–N/C are due to symmetric and antisymmetric stretching vibration modes of C–O, whereas for ZnO–N/C, the peaks are observed at 1616 and 1392 cm –1 . In the higher spectral region, the strong and broad bands at 3423 cm –1 (Co–ZnO–N/C) and 3429 cm –1 (ZnO–N/C) are attributed to the stretching vibrations of the hydroxyl (OH) residues. − …”

Section: Resultsmentioning

confidence: 99%

Metal–Organic Framework-Derived Co-Doped ZnO Nanostructures Anchored on N-Doped Carbon as a Room-Temperature Chemiresistive Hydrogen Sensor

DMello

Vishwanathan

Bakuru

et al. 2022

ACS Appl. Nano Mater.

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The impending need to utilize H2 for multiple applications has surged the need to develop H2 sensors. Development of selective and rapid room-temperature H2 sensors is an uphill task without the doping of precious metals (Pd, Pt, and Au) in semiconductor metal oxide (SMO) sensors. Nanostructure of the SMOs could play a decisive role in gas sensing properties of the material. In this study, metal–organic framework (MOF)-derived Co–ZnO anchored on nitrogen-doped carbon (Co–ZnO–N/C) nanomaterial has been demonstrated as an effective rapid room-temperature H2 sensor. The pyrolysis of monometallic ZIF-8 (Zn) gave rise to amorphous ZnO stabilized on nitrogen-doped carbon (ZnO–N/C) and was found to be innocent for H2 sensing, whereas the pyrolysis of bimetallic ZIF(Co–Zn) resulted in the formation of Co–ZnO–N/C nanostructure with a high dispersion of Co on amorphous ZnO. Co–ZnO–N/C inherited the nanostructure of the parent precursor with rhombododecahedron particles of 200–300 nm and possessed subnanometer pores. Co inclusion into ZnO has converted the innocent amorphous ZnO–N/C into a rapid room-temperature H2 sensor (by measuring the dynamic change in the resistance with respect to time). Co–ZnO–N/C displayed a 3.7% response % with 17–26 s of recovery–response times for 1% concentration of H2 under room-temperature conditions. The unique nanostructure of Co–ZnO–N/C enhanced the signal transduction (via N-doped carbon support) and promoted H2 diffusion (through subnanometer pores). Higher-temperature H2 sensing studies were also conducted at 200 °C, wherein Co–ZnO–N/C displayed an increase in response to 5.7% with 8–16 s of response–recovery times. Co–ZnO–N/C chemiresistor is a rare example that does not contain precious metals yet exhibits room-temperature hydrogen sensing.

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“…The 667 cm -1 wavenumber was caused by the vibrations of TeO3/TeO6 units, whereas the peak was caused by the bending vibrations of the Te-O-Te linkage [11]. The located 1006 cm -1 is the vibration of Ba-O units banding [10], and the band after 2024 cm -1 corresponds to the vibration of the OH group [12], as shown in Table 2 The vibration of Ba-O units banding.…”

Section: Ftirmentioning

confidence: 98%

“…Significant vibrational bands are visible in the spectra at 584, 667, 1006, 2024, 2168, and 2359 cm -1 . The band located about 584 cm -1 is the Zn-O bonds' stretching vibrations and oscillations of the ZnO units bending [10]. The 667 cm -1 wavenumber was caused by the vibrations of TeO3/TeO6 units, whereas the peak was caused by the bending vibrations of the Te-O-Te linkage [11].…”

Section: Ftirmentioning

confidence: 98%

The Comparative Studies of TeO₂: ZnF₂: BaO doped Sm₂O₃ Glass Which Prepare in a Different Atmosphere

Yasaka,

Wongwan,

Boonin

et al. 2023

J. Phys.: Conf. Ser.

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Sm3+ ion doped TeO2: ZnF2: BaO glasses are prepared in different atmospheres by melt quenching technique. The glasses structure was analyzed using a Rigaku SmartLab SE X-ray diffractometer (XRD). Absorption spectra (Shimadzu, 3600) in the wavelength between 400 to 1800 nm were recorded using a UV-VIS-NIR spectrophotometer. They found a total of seven peaks, which corresponded with the energy transitions of Sm3+ ion from the ground level 6H5/2 → 6F11/2, 6F9/2, 6F7/2, 6F5/2, 6F3/2, 6H15/2, and 6F1/2 at 944, 1083, 1238, 1383, 1485 and 1543 nm respectively. A spectrofluorophotometer (Cary-Eclipse) was used to detect the photoluminescence, and the excitation spectra were obtained from measurements in wavelengths of 300 to 550 nm using the emission spectrum at 597 nm. from 6H5/2 (ground state) → 4D7/2 (345), 4D3/2 (362), 6P7/2 (375), 6P3/2 (403), 6P5/2 (417) 4G9/2 (438), 4I13/2 (462) 4I11/2 (474), 4G7/2 (501) and 4F3/2 (526) the excited states. Using a 405 nm exciting wavelength, the emission spectra were captured in the 500–750 nm. The lifetime of the sample between the sample prepared in the air atmosphere and the CO2 atmosphere at the excitation wavelength of 405 nm was 0.679 and 0.662 ms, respectively.

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FTIR and Raman spectroscopy studies of ZnO-doped BaO⋅2B2O3 glass matrix

Cited by 43 publications

References 45 publications

Effect of properties and crystallization behavior of BaO–ZnO–B₂O₃–SiO₂ glass on the electrical conductivity of Cu paste

Effect of properties and crystallization behavior of BaO–ZnO–B₂O₃–SiO₂ glass on the electrical conductivity of Cu paste

Metal–Organic Framework-Derived Co-Doped ZnO Nanostructures Anchored on N-Doped Carbon as a Room-Temperature Chemiresistive Hydrogen Sensor

The Comparative Studies of TeO₂: ZnF₂: BaO doped Sm₂O₃ Glass Which Prepare in a Different Atmosphere

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FTIR and Raman spectroscopy studies of ZnO-doped BaO⋅2B2O3 glass matrix

Cited by 43 publications

References 45 publications

Effect of properties and crystallization behavior of BaO–ZnO–B2O3–SiO2 glass on the electrical conductivity of Cu paste

Effect of properties and crystallization behavior of BaO–ZnO–B2O3–SiO2 glass on the electrical conductivity of Cu paste

Metal–Organic Framework-Derived Co-Doped ZnO Nanostructures Anchored on N-Doped Carbon as a Room-Temperature Chemiresistive Hydrogen Sensor

The Comparative Studies of TeO2: ZnF2: BaO doped Sm2O3 Glass Which Prepare in a Different Atmosphere

Contact Info

Product

Resources

About

Effect of properties and crystallization behavior of BaO–ZnO–B₂O₃–SiO₂ glass on the electrical conductivity of Cu paste

Effect of properties and crystallization behavior of BaO–ZnO–B₂O₃–SiO₂ glass on the electrical conductivity of Cu paste

The Comparative Studies of TeO₂: ZnF₂: BaO doped Sm₂O₃ Glass Which Prepare in a Different Atmosphere