Ternary Chalcogenide‐Based Photoelectrochemical Cells: VIII . Solution Composition Effects in Aqueous Polysulfide and Aqueous Polyiodide Cells

1987 ◽  
Vol 134 (3) ◽  
pp. 592-600 ◽  
Author(s):  
Geulah Dagan ◽  
David Cahen
Keyword(s):  
Photoelectrochemical Cells ◽  
Solution Composition ◽  
Composition Effects ◽  
Ternary Chalcogenide

Ternary chalcogenide-based photoelectrochemical cells III. n-CuIn5S8/aqueous polysulfide

1984 ◽  
Vol 11 (1-2) ◽  
pp. 57-74 ◽  
Author(s):  
Geulah Dagan ◽  
Saburo Endo ◽  
Gary Hodes ◽  
George Sawatzky ◽  
David Cahen
Keyword(s):  
Photoelectrochemical Cells ◽  
Ternary Chalcogenide

Arsenic(V) Adsorption onto Biogenic Hydroxyapatite: Solution Composition Effects

2006 ◽  
Vol 180 (1-4) ◽  
pp. 75-82 ◽  
Author(s):  
Mariela Czerniczyniec ◽  
Silvia Farías ◽  
Jorge Magallanes ◽  
Daniel Cicerone
Keyword(s):  
Solution Composition ◽  
Composition Effects ◽  
Biogenic Hydroxyapatite

Ternary Chalcogenide‐Based Photoelectrochemical Cells: II . The Polysulfide System

1982 ◽  
Vol 129 (7) ◽  
pp. 1506-1512 ◽  
Author(s):  
Reshef Tenne ◽  
Yehudith Mirovsky ◽  
Ya'acov Greenstein ◽  
David Cahen
Keyword(s):  
Photoelectrochemical Cells ◽  
Ternary Chalcogenide

Ternary Chalcogenide‐Based Photoelectrochemical Cells: IV . Further Characterization of the Polysulfide Systems

1985 ◽  
Vol 132 (5) ◽  
pp. 1062-1070 ◽  
Author(s):  
David Cahen ◽  
Geulah Dagan ◽  
Yehudith Mirovsky ◽  
Gary Hodes ◽  
Witold Giriat ◽  
...  
Keyword(s):  
Photoelectrochemical Cells ◽  
Ternary Chalcogenide

Solution Composition Effects on the Dissolution of a CeO2 analogue for UO2 and ThO2 nuclear fuels

2015 ◽  
Vol 1744 ◽  
pp. 185-190 ◽  
Author(s):  
Claire L. Corkhill ◽  
Martin C. Stennett ◽  
Neil C. Hyatt
Keyword(s):  
Acidic Medium ◽  
Colloidal Particles ◽  
Spent Nuclear Fuel ◽  
Alkaline Solutions ◽  
Dissolution Mechanism ◽  
Nuclear Fuels ◽  
Solution Composition ◽  
Geological Disposal ◽  
Composition Effects

ABSTRACTThis study investigates the dissolution of CeO2, an isostructural analogue for UO2 and ThO2, which was synthesized to closely approximate the microstructure of a spent nuclear fuel matrix. Dissolution of CeO2 particles was performed in simplified solutions representative of saline, near-neutral and alkaline ground waters that may be encountered in geological disposal scenarios, and in acidic medium for comparison. The normalized mass loss of cerium was found to be significantly influenced by the formation of colloidal particles, especially in the near-neutral and alkaline solutions investigated. The normalized dissolution rate, RL(Ce), k (g m-2 d-1), in these two solutions was found to be similar, but significantly lower than in a nitric acid medium. The activation energies based on the normalized release rate of cerium, at 40°C, 70°C and 90°C in each solution, were in the range of 24 ± 3 kJ mol-1 to 27 ± 7 kJ mol-1, indicative of a surface-mediated dissolution mechanism. The mechanism of dissolution was postulated to be similar in each of the solutions investigated, and further work is proposed to investigate the role of carbonate on the CeO2 dissolution mechanism.

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