Properties of redox ions in glasses: An interdisciplinary perspective

Schreiber, Henry D.

doi:10.1016/0022-3093(80)90019-8

Cited by 18 publications

(10 citation statements)

References 10 publications

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“…In addition, during the UV radiation, electron transfer can occur in the photosensitive elements of Ce, Sb, Sn, and Ag based on the Eqs. (1)- (5). In fact, within the UV radiation, photoelectrons can eject from Ce 3+ and Sn 2+ then get absorbed by silver ions and subsequently form silver clusters through the heat treatment process at 500 and 600°C.…”

Section: Resultsmentioning

confidence: 99%

“…This evidence is strong enough to explain the existence of colloidal silver in G P(UV) based on the Eqs. (1)- (5). Comparison of G B and G P before and after UV radiation indicates a difference between their baselines.…”

Section: Characterization Methodsmentioning

confidence: 96%

“…Optical absorption studies on TiO 2 containing glasses indicate that under ordinary conditions of melting, titanium ions are incorporated into silicate glasses in its higher valence state as Ti 4+ ions because it is difficult to obtain Ti 3+ ions under such conditions. Indeed, alkali silicate and alkali borate glasses melted under normal atmospheric condition favor the colorless high tetravalent titanium ions while alkali phosphate and lead phosphate glasses advocate the presence of the purple trivalent titanium ions [5,11,23,27].…”

Section: Characterization Methodsmentioning

confidence: 99%

“…(1) during the photosensitive glasses melting process. Particularly for lithium silicate systems, the lithium-metasilicate crystallizes would be appeared around the Ag clusters; therefore, grain formation and growth will happen [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effects of TiO2 and P2O5 on solarization and crystallization of photosensitive lithium silicate glass

Panah

Yekta

Marghussian

et al. 2015

Journal of Non-Crystalline Solids

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Section: Resultsmentioning

confidence: 99%

Section: Characterization Methodsmentioning

confidence: 96%

Section: Characterization Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of TiO2 and P2O5 on solarization and crystallization of photosensitive lithium silicate glass

Panah

Yekta

Marghussian

et al. 2015

Journal of Non-Crystalline Solids

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“…The small value of σ 2 is qualitatively consistent with a nearly undistorted uranyl coordination. U(V) may be present in glassy materials [37,42,67], and in this case a small amount of U(V) (which should have a U-O ax distance of about 1.83Å [65]) is possible, especially given the slightly enhanced σ 2 value of 0.006Å 2 , where more typically…”

mentioning

confidence: 99%

Chemical speciation of U, Fe, and Pu in melt glass from nuclear weapons testing

Pacold

Lukens

Booth

et al. 2016

Journal of Applied Physics

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Nuclear weapons testing generates large volumes of glassy material that influence the transport of dispersed actinides in the environment and may carry information on the composition of the detonated device. We determine the oxidation state of U and Fe (which is known to buffer the oxidation state of actinide elements and to affect the redox state of groundwater) in samples of melt glass collected from three U.S. nuclear weapons tests. For selected samples, we also determine the coordination geometry of U and Fe, and we report the oxidation state of Pu from one melt glass sample. We find significant variations among the melt glass samples, and in particular, find a clear deviation in one sample from the expected buffering effect of Fe(II)/Fe(III) on the oxidation state of uranium. In the first direct measurement of Pu oxidation state in a nuclear test melt glass, we obtain a result consistent with existing literature that proposes Pu is primarily present as Pu(IV) in post-detonation material. In addition, our measurements imply that highly mobile U(VI) may be produced in significant quantities when melt glass is quenched rapidly following a nuclear detonation, though these products may remain immobile in the vitrified matrices. The observed differences in chemical state among the three samples show that redox conditions can vary dramatically across different nuclear test conditions. The local soil composition, associated device materials, and the rate of quenching are all likely to affect the final redox state of the glass. The resulting variations in glass chemistry are significant for understanding and interpreting debris chemistry, and the later environmental mobility of dispersed material.

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Iron in Silicate Glasses and Melts

Losq

Cicconi

Neuville

2021

Geophysical Monograph Series

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

show abstract

Properties of redox ions in glasses: An interdisciplinary perspective

Cited by 18 publications

References 10 publications

Effects of TiO2 and P2O5 on solarization and crystallization of photosensitive lithium silicate glass

Effects of TiO2 and P2O5 on solarization and crystallization of photosensitive lithium silicate glass

Chemical speciation of U, Fe, and Pu in melt glass from nuclear weapons testing

Iron in Silicate Glasses and Melts

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