Utilization of B₂O₃–Bi₂O₃–ZnO low-temperature glass-ceramics to immobilize iodine-loaded silver-coated silica-gel

Abstract

This study is dedicated to investigating the performance of B2O3-Bi2O3-ZnO low-temperature glass-ceramics to immobilize iodine loaded silver-coated silica-gel (AgIs). Various mass fraction of iodine (15, 20, 25, and 30 wt.%)...

Tailoring the efficient laser‐absorption‐melting behavior of Bi2O3‐B2O3‐ZnO‐Nd2O3 glass for the OLED encapsulation

“…The increase of peak intensity at 1000 cm −1 displays that the [BO 4 ] group connected in the form of bridge oxygen increases, which means that the addition of Nd 2 O 3 is conducive to promoting the transformation from [BO 3 ] triangle to [BO 4 ] tetrahedron in the glass network structure, agreeing with the result of Ibrahim reported before 18 . The absorption peaks at 1200 ∼ 1400 cm −1 narrow with the increasement of Nd 2 O 3 , indicating that the content of [BO 3 ] unit with nonbridging oxygen existing in the boron oxygen network descends 18,19 . In conclusion, when the Nd 2 O 3 content is 3 wt%, the content of [BO 4 ] tetrahedron and [BiO 6 ] hexahedron in the glass system is the most, that is, the glass system is strengthened.…”

“…18 The absorption peaks at 1200 ∼ 1400 cm −1 narrow with the increasement of Nd 2 O 3 , indicating that the content of [BO 3 ] unit with nonbridging oxygen existing in the boron oxygen network descends. 18,19 In conclusion, when the Nd 2 O 3 content is 3 wt%, the content of [BO 4 ] tetrahedron and [BiO 6 ] hexahedron in the glass system is the most, that is, the glass system is strengthened.…”

“…Figure 3 shows the infrared absorption spectrum of BBZ‐Nd glass samples appear near 520 cm −1 ,700 cm −1 ,840 cm −1 ,1000 cm −1 ,1200∼1400 cm −1 (the major absorption bands and their vibration types summarized in table 2). 16–19 It seems that the absorption intensity of band observed at 544 cm −1 which ascribes to the vibrations of Bi–O–Bi bonds in distorted [BiO 6 ] octahedron network increases firstly and then decreases with the increase of Nd 2 O 3 content, implying the content of [BiO 6 ] hexahedron in glass structure also increases first and then decreases. Correspondingly, the change of absorption intensity band at 840 cm −1 , which is a characteristic peak of [BiO 3 ] triangle unit, reflects the fact that the content of [BiO 3 ] triangular structure decreases and then increases.…”

High Retention Immobilization of Iodine in B–Bi–Zn Oxide Glass Using Bi2O3 as a Stabilizer under a N2 Atmosphere

“…The other important and effective measure is to develop a low-temperature matrix. In recent years, the low-temperature glass matrices have been developed and employed to immobilize iodine due to the advantages of low sintering temperature, excellent radiation, and chemical stability. ,,− Particularly, glass-bonded iodosodalite waste forms were synthesized at low temperature (650–750 °C), but about 53% iodine was lost during the sintering process . Moreover, Yang et al reported that the iodine waste was successfully immobilized in B–Bi–Zn and Bi–Zn–Si–Al oxide low-temperature glass at 600 °C, while the iodine loss was up to 66 and 79%, respectively.…”