Synthesis, characterization and optical properties of non-traditional tellurite–selenite glasses

Bachvarova-Nedelcheva, A.; Iordanova, R.; Kostov, Konstantin; Ganev, Valentin; Yordanov, St.

doi:10.1016/j.optmat.2014.03.022

Cited by 22 publications

(8 citation statements)

References 49 publications

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“…Obviously, the 88.46% area percentage of TeO 4 tbp is higher than 11.54% of TeO 3 tp. Conclusively, both TeO 4 and TeO 3 units consist in tND‐TZNGB glass but the TeO 4 amount is predominant in the amorphous structure, which is in agreement with previous XPS studies of alkali tellurite glasses 44,52,53 . The alkali metal oxide Na 2 O converts TeO 4 tbp to TeO 3 tbp by disrupting the Te‐O‐Te bonds in the network structure, which affects the coherence and thermal stability of the network structure.…”

Section: Resultssupporting

confidence: 90%

“…50 The Te3d 5/2 peak of the examined glass is deconvoluted into two peaks contributed at 575.0 and 576.3 eV. According to prior studies, 51,52 these binding energy (BE) are related to the presence of TeO 3 trigonal pyramid (tp) and TeO 4 trigonal bipyramid (tbp) units, respectively. The structure stick model of TeO 3 tp and TeO 4 tbp was given in illustration 1and 2, respectively.…”

mentioning

confidence: 94%

“…Conclusively, both TeO 4 and TeO 3 units consist in tND-TZNGB glass but the TeO 4 amount is predominant in the amorphous structure, which is in agreement with previous XPS studies of alkali tellurite glasses. 44,52,53 The alkali metal oxide Na 2 O converts TeO 4 tbp to TeO 3 tbp by disrupting the Te-O-Te bonds in the network structure, which affects the coherence and thermal stability of the network structure. The incorporation of cations with charge greater than 1, such as B 3+ and Ge 4+ , leads connection of lone pair electrons on tbp and tp, which enhances the continuity of the network structure and improves the thermal stability.…”

mentioning

confidence: 99%

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The fabrication of nanodiamond doped tellurite germanate glass with robust structure and its luminescence

Gan

et al. 2020

J Am Ceram Soc

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Fluorescence of negative‐charged nitrogen‐vacancy centers in nanodiamond allows applications in quantum metrology, nanoscale sensor, and bioimaging, of utmost relevance to domains from nanotechnologies to biosensing. However, the low color center content and collection efficiency of photons are crucial issues. Although, several studies about coupling nanodiamond into optical waveguides have already been proposed, the search for the most appropriate substance and simplest, most effective method are of keys. In this study, we present a novel nontraditional way to incorporate nanodiamond with increased negative‐charged nitrogen‐vacancy content to 75.48% into tellurite germanate glass. The hybrid glass is stable in structure with predominant TeO4 trigonal bipyramid. Moreover, the fluorescence intensity is enhanced in composite. Such robust nanodiamond in tellurite germanate glass optical system has the potential to be used for nanoparticle sensing and quantum metrology.

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Section: Resultssupporting

confidence: 90%

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confidence: 94%

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confidence: 99%

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The fabrication of nanodiamond doped tellurite germanate glass with robust structure and its luminescence

Gan

et al. 2020

J Am Ceram Soc

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“…Moreover, in the O 1s spectrum of CAU‐17, the peaks at 531.5 eV and 533.5 eV are ascribed to Bi−O bond and the O in bismuth–oxo clusters of CAU‐17, respectively (Supporting Information, Figure S23 b). After adsorption of SeO 3 2− , a new peak at 530.4 eV is the characteristic peak of newly formed Bi‐O‐Se bond (Supporting Information, Figure S24 b) . This means Bi−O bonds which are involved in the immobilization of SeO 3 2− transform into Bi−O−Se bonds.…”

Section: Figurementioning

confidence: 97%

“…After adsorption of SeO 3 2À ,anew peak at 530.4 eV is the characteristic peak of newly formed Bi-O-Se bond (Supporting Information, Figure S24 b). [38] This means Bi À Obonds which are involved in the immobilization of SeO 3 2À transform into Bi À O À Se bonds.H owever,t he adsorption of SeO 4 2À did not influence the Bi À Ob ond of CAU-17 (Supporting Information, Figure S25 b).…”

Section: àmentioning

confidence: 99%

Selective Capture of Toxic Selenite Anions by Bismuth‐based Metal–Organic Frameworks

et al. 2018

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Chemically durable and effective absorbent materials for selenite (SeO 3 2À )r emain highly desirable for contamination remediation. Now ab ismuth-based metal-organic framework (Bi-MOF,C AU-17) was used as adsorbent to capture SeO 3 2À anions from aqueous solution with ultrahigh adsorption capacity of 255.3 mg g À1 and fast kinetics.F urthermore,the adsorbent showed excellent selectivity for SeO 3 2À and was able to work steadily in abroad pH range of 4-11. Density functional theory (DFT) calculation, XANES modeling,a nd EXAFS fitting suggested that SeO 3 2À anions were immobilized by forming BiÀOÀSe bonds (T-3 structural model) though splitting the O À Bi À Ob ond in the crystal structure,l eading to astructural transformation of CAU-17 in the solid state.Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

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Selective Capture of Toxic Selenite Anions by Bismuth‐based Metal–Organic Frameworks

et al. 2018

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Chemically durable and effective absorbent materials for selenite (SeO ) remain highly desirable for contamination remediation. Now a bismuth-based metal-organic framework (Bi-MOF, CAU-17) was used as adsorbent to capture SeO anions from aqueous solution with ultrahigh adsorption capacity of 255.3 mg g and fast kinetics. Furthermore, the adsorbent showed excellent selectivity for SeO and was able to work steadily in a broad pH range of 4-11. Density functional theory (DFT) calculation, XANES modeling, and EXAFS fitting suggested that SeO anions were immobilized by forming Bi-O-Se bonds (T-3 structural model) though splitting the O-Bi-O bond in the crystal structure, leading to a structural transformation of CAU-17 in the solid state.

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Synthesis, characterization and optical properties of non-traditional tellurite–selenite glasses

Cited by 22 publications

References 49 publications

The fabrication of nanodiamond doped tellurite germanate glass with robust structure and its luminescence

The fabrication of nanodiamond doped tellurite germanate glass with robust structure and its luminescence

Selective Capture of Toxic Selenite Anions by Bismuth‐based Metal–Organic Frameworks

Selective Capture of Toxic Selenite Anions by Bismuth‐based Metal–Organic Frameworks

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