The study of the structure and bioactivity of the B2O3 • Na2O • P2O5 system

Hidi, Izabella J.; Melinte, Georgian; Ştefan, R.; Bindea, Maria; Baia, Lucian

doi:10.1002/jrs.4330

Cited by 45 publications

(24 citation statements)

References 50 publications

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“…, a small band centered at 1 370 cm − 1 , 25,26) originating from BO 3 trigonal, gradually appeared with B 2 O 3 additions from sample CSBT-1 to CSBT-4; the variation trend of this band also indicated a dominant existence of BO 3 trigonal in the networks, which was in agreement with the FTIR spectra. While compared to the FTIR spectra, the BO 4 tetrahedral was not observed in the Raman spectra, which should be further confirmed using other techniques in the following sections.…”

Section: Raman Spectra For the Glass Samplessupporting

confidence: 83%

“…, generally attributed to the oxygen bridges between two BO 3 trigonal, 25,26) gradually grew with increasing B 2 O 3 content, indicating one main type of boron-related structural group in the glasses could be BO 3 trigonal.…”

Section: Ftir Spectra For the Glass Samplesmentioning

confidence: 96%

“…22,27) Interestingly, a shoulder centered near 845 cm , gradually appeared only with the existence of B 2 O 3 in the glasses. These two bands could be assigned to the BO 4 tetrahedral and BO 3 trigonal, respectively, 25,26) which largely accounted for the dominant types of boron-related structural groups present in the borosilicate glasses.…”

Section: Ftir Spectra For the Glass Samplesmentioning

confidence: 99%

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Short-range and Medium-range Structural Order in CaO–SiO2–TiO2–B2O3 Glasses

Sun

et al. 2016

ISIJ International

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The present study aimed to provide a deep insight of short-range and medium-range structural order for CaO-SiO 2 -TiO 2 -B 2 O 3 glasses. From various prospects, four techniques, FTIR, Raman, XPS and NMR, were simultaneously employed and only the direct evidences indicated from the spectra were used for structural analysis. The FTIR and Raman spectra proved that the main silicon-related units were Q 0 (Si), Q 1 (Si), Q 2 (Si) and Q 3 (Si) and the results of Raman fittings revealed that a B 2 O 3 addition resulted in an increase of Q 1 (Si) and Q 3 (Si) at the cost of Q 0 (Si) and Q 2 (Si), thus inducing an increasing Degree of Polymerization (DOP). An enhanced DOP generally implied a lower abundance of non-bridging oxygen in the networks, which was further demonstrated by the O1s XPS fittings. Additionally, the 11 B NMR spectra indicated that the dominant boron-related groups were BO 3 trigonal comprising ring and non-ring BO 3 as well as BO 4 tetrahedral comprising BO 4 (1B,3Si) and BO 4 (0B,4Si). Furthermore, it was clarified that an increase of B 2 O 3 content promoted the ratios of BO 4 (1B,3Si) to BO 4 (0B,4Si) and BO 4 tetrahedral to BO 3 trigonal, which undoubtedly identified the occurrence of an equilibrium reaction between NBO, BO 4 tetrahedral and BO 3 trigonal in the glass.

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Section: Raman Spectra For the Glass Samplessupporting

confidence: 83%

Section: Ftir Spectra For the Glass Samplesmentioning

confidence: 96%

Section: Ftir Spectra For the Glass Samplesmentioning

confidence: 99%

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Short-range and Medium-range Structural Order in CaO–SiO2–TiO2–B2O3 Glasses

Sun

et al. 2016

ISIJ International

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“…Moreover, two bands located at 1160 to 1325 and 1325 to 1550 cm À1 became more profound in the presence of B 2 O 3 , which could be attributed to the pyroborate/orthorborate units and the B-O vibrations of various borate rings, respectively. [26][27][28] In particular, there existed two bands centered at~1230 and~1410 cm À1 , which could be assigned to the stretching vibrations of BO 4 tetrahedral and BO 3 trigonal. [26,27] In addition, the appearance of these two B-related structures could be further verified based on the Raman and NMR spectra.…”

Section: Yongqi Sun and Zuotai Zhangmentioning

confidence: 98%

“…First, with increasing B 2 O 3 content, the band near 680 cm À1 assigned to Si-O symmetry stretching became less intense due to the decreasing SiO 2 content; meanwhile, a new band attributed to the oxygen bridges between two BO 3 grew near 720 cm À1 . [26,27] Second, the band of Q 0 (Si) centered near 840 cm À1 became less pronounced. This generally indicated a decreasing mole fraction of Q 0 (Si) in the SiO 4 tetrahedrons and therefore an increasing DOP of the structures, which would be further discussed based on the Raman spectra.…”

Section: Yongqi Sun and Zuotai Zhangmentioning

confidence: 98%

Structural Roles of Boron and Silicon in the CaO-SiO2-B2O3 Glasses Using FTIR, Raman, and NMR Spectroscopy

Sun

Zhang

2015

Metall Mater Trans B

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The present paper provided not only a deep insight of network structures of borosilicate glasses but also a basic linkage between the network structures and the viscous flow behaviors of many borosilicate melts. The structures of a ternary system of CaO-SiO 2 -B 2 O 3 were characterized using Fourier transformation infrared (FTIR), Raman, and magic angular spinning nuclear magnetic resonance spectroscopy. The results of FTIR and Raman spectra complementally verified that the main Si-related units were SiO 4 tetrahedral with zero, one, two, and three bridging oxygens [Q 0 (Si), Q 1 (Si), Q 2 (Si), and Q 3 (Si)]; the added B 2 O 3 leaded to an increase of Q 3 (Si) at the cost of Q 0 (Si) and Q 2 (Si), and therefore an increasing degree of polymerization (DOP) was induced. Additionally, the 11 B NMR spectra demonstrated that the dominant B-related groups were BO 3 trigonal and BO 4 tetrahedral, while an increasing B 2 O 3 content facilitated the existence of BO 4 tetrahedral. Moreover, there was a competitive effect between the enhanced DOP and the presence of BO 3 trigonal and BO 4 tetrahedral in the networks, which therefore resulted in a decreasing viscosity of borosilicate melts in numerous studies.Borosilicate-based glasses and melts are important materials because of their wide applications in glass industry. [1][2][3][4] and metallurgical industry. [5][6][7][8][9] The macroscopic properties of these glasses and melts are primarily determined by the microscopic structure; thus it is of crucial importance to acquire the structural environments of boron (B) and silicon (Si) including the role and coordination conditions. Meanwhile, numerous studies [5][6][7][10][11][12][13][14][15][16][17] explored the viscous flow behavior and analyzed the variation trend of the viscosities of B 2 O 3 -bearing melts. The foregoing investigations on the structures and viscosities of borosilicate glasses and melts could be categorized into three types.First, many researchers [6,[10][11][12][13][14][15][16] measured the viscosity of borosilicate melts and discovered that the viscosity remarkably or slightly decreased with increasing B 2 O 3 content depending on the melt components, while the discussion on the varying viscosity was focused on the overall nature of B 2 O 3 with a low-melting point. Second, recently several studies [5,7,17] investigated the viscosities of boron-bearing melts from the prospect of qualitative analysis of the melt structures using Fourier transformation infrared (FTIR) and Raman spectra. Third, because of the crucial importance of borosilicate glasses, many studies have explored the structures of borosilicate glasses [1][2][3][4] and substantial knowledge has been obtained.As for the Si-related structures, there were five structural units of SiO 4 tetrahedral, [18][19][20][21] which could be denoted as Q i (Si) (i = 0, 1, 2, 3, 4), where i represents the number of bridging oxygens (BO). The mole fraction of these structural units could be derived based on the deconvolutions of the Raman or magic angular...

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Recent advances in linear and nonlinear Raman spectroscopy. Part VIII

Nafie

2014

J Raman Spectroscopy

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The goal of this annual review is to provide an overview of advances in the field of Raman spectroscopy as reflected in articles published each year in the Journal of Raman Spectroscopy as well as in trends across related journals that have published papers in the broad field of Raman spectroscopy. The content is obtained from statistical data on article counts obtained from Thomson Reuters ISI Web of Knowledge by year and by subfield of Raman spectroscopy. Additional information is gleaned from presentations at the XXIV International Conference on Raman Spectroscopy in Germany in August 2014 and those featuring Raman scattering at SCIX 2014 organized by the Federation of Analytical Chemistry and Spectroscopy Societies in Reno, Nevada, USA in October 2014. Coverage is also provided for topics from the conference GeoRaman 2014 held in June in St. Louis, Missouri and ECONOS 2014 held in May in Dole, France. Finally, papers published in JRS in 2013 are highlighted and arranged by topics at the frontier of Raman spectroscopy. From these various perspectives, it is clear that Raman spectroscopy is a rapidly expanding field that provides sensitive photonic information of matter at the molecular level in an ever‐widening sphere of novel applications. Copyright © 2014 John Wiley & Sons, Ltd.

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The study of the structure and bioactivity of the B₂O₃ • Na₂O • P₂O₅ system

Cited by 45 publications

References 50 publications

Short-range and Medium-range Structural Order in CaO–SiO<sub>2</sub>–TiO<sub>2</sub>–B<sub>2</sub>O<sub>3</sub> Glasses

Short-range and Medium-range Structural Order in CaO–SiO<sub>2</sub>–TiO<sub>2</sub>–B<sub>2</sub>O<sub>3</sub> Glasses

Structural Roles of Boron and Silicon in the CaO-SiO2-B2O3 Glasses Using FTIR, Raman, and NMR Spectroscopy

Recent advances in linear and nonlinear Raman spectroscopy. Part VIII

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