Tellurium behaviour in the Fukushima Dai-ichi Nuclear Power Plant accident

Dickson, R.; Glowa, Glenn A.

doi:10.1016/j.jenvrad.2019.03.024

Cited by 21 publications

(9 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results indicate that mcalpineite might be a sink for U in Cu-and Te-rich weathering zones, an observation that may have significance in the area of nuclear remediation. Radioactive isotopes of Te including 132 Te and 129 m Te are released by nuclear fission, meaning that these isotopes must be accounted for in remediation of sites such as Fukushima Daiichi following the nuclear power plant disaster in 2011 (Dickson & Glowa, 2019;Tagami et al, 2013;Takahashi et al, 2019). U-bearing mcalpineite could be used to entrap both Te and U due to its high stability over the full pH range (as shown by our syntheses of Cu II 3 Te VI O 6 ) and its ability to incorporate both elements.…”

Section: Observations In the Cu II -Te Vi -O-h Ae Systemmentioning

confidence: 98%

Polytypism in mcalpineite: a study of natural and synthetic Cu₃TeO₆

Missen¹,

Mills²,

Canossa³

et al. 2022

Acta Crystallogr Sect B

View full text Add to dashboard Cite

Synthetic and naturally occurring forms of tricopper orthotellurate, CuII 3TeVIO6 (the mineral mcalpineite) have been investigated by 3D electron diffraction (3D ED), X-ray powder diffraction (XRPD), Raman and infrared (IR) spectroscopic measurements. As a result of the diffraction analyses, CuII 3TeVIO6 is shown to occur in two polytypes. The higher-symmetric CuII 3TeVIO6-1C polytype is cubic, space group Ia 3, with a = 9.537 (1) Å and V = 867.4 (3) Å3 as reported in previous studies. The 1C polytype is a well characterized structure consisting of alternating layers of CuIIO6 octahedra and both CuIIO6 and TeVIO6 octahedra in a patchwork arrangement. The structure of the lower-symmetric orthorhombic CuII 3TeVIO6-2O polytype was determined for the first time in this study by 3D ED and verified by Rietveld refinement. The 2O polytype crystallizes in space group Pcca, with a = 9.745 (3) Å, b = 9.749 (2) Å, c = 9.771 (2) Å and V = 928.3 (4) Å3. High-precision XRPD data were also collected on CuII 3TeVIO6-2O to verify the lower-symmetric structure by performing a Rietveld refinement. The resultant structure is identical to that determined by 3D ED, with unit-cell parameters a = 9.56157 (19) Å, b = 9.55853 (11) Å, c = 9.62891 (15) Å and V = 880.03 (2) Å3. The lower symmetry of the 2O polytype is a consequence of a different cation ordering arrangement, which involves the movement of every second CuIIO6 and TeVIO6 octahedral layer by (1/4, 1/4, 0), leading to an offset of TeVIO6 and CuIIO6 octahedra in every second layer giving an ABAB* stacking arrangement. Syntheses of CuII 3TeVIO6 showed that low-temperature (473 K) hydrothermal conditions generally produce the 2O polytype. XRPD measurements in combination with Raman spectroscopic analysis showed that most natural mcalpineite is the orthorhombic 2O polytype. Both XRPD and Raman spectroscopy measurements may be used to differentiate between the two polytypes of CuII 3TeVIO6. In Raman spectroscopy, CuII 3TeVIO6-1C has a single strong band around 730 cm−1, whereas CuII 3TeVIO6-2O shows a broad double maximum with bands centred around 692 and 742 cm−1.

show abstract

Section: Observations In the Cu II -Te Vi -O-h Ae Systemmentioning

confidence: 98%

Polytypism in mcalpineite: a study of natural and synthetic Cu₃TeO₆

Missen¹,

Mills²,

Canossa³

et al. 2022

Acta Crystallogr Sect B

View full text Add to dashboard Cite

show abstract

“…Tellurium-containing motifs have a wide application in the range from metallurgy to electronics and the chemical field, − such as solar panels, − thermoelectric materials, − semiconductor devices, − alloys, − and chemical raw materials. , An attempt has been reinvested in the development of synthetic procedures for tellurium-containing compounds by Xu and co-workers in 2019 . They can construct various π-extended tellurium-containing arenes 94 , including tritellurasumanene 94l , through efficient intermolecular and intramolecular coupling process between tellurium powder and cyclic diaryliodoniums 93 (Scheme ).…”

Section: Synthetic Applications Of Cyclic Aryliodoniumsmentioning

confidence: 99%

Recent Progress in Cyclic Aryliodonium Chemistry: Syntheses and Applications

et al. 2023

View full text Add to dashboard Cite

Hypervalent aryliodoumiums are intensively investigated as arylating agents. They are excellent surrogates to aryl halides, and moreover they exhibit better reactivity, which allows the corresponding arylation reactions to be performed under mild conditions. In the past decades, acyclic aryliodoniums are widely explored as arylation agents. However, the unmet need for acyclic aryliodoniums is the improvement of their notoriously low reaction economy because the coproduced aryl iodides during the arylation are often wasted. Cyclic aryliodoniums have their intrinsic advantage in terms of reaction economy, and they have started to receive considerable attention due to their valuable synthetic applications to initiate cascade reactions, which can enable the construction of complex structures, including polycycles with potential pharmaceutical and functional properties. Here, we are summarizing the recent advances made in the research field of cyclic aryliodoniums, including the nascent design of aryliodonium species and their synthetic applications. First, the general preparation of typical diphenyl iodoniums is described, followed by the construction of heterocyclic iodoniums and monoaryl iodoniums. Then, the initiated arylations coupled with subsequent domino reactions are summarized to construct polycycles. Meanwhile, the advances in cyclic aryliodoniums for building biaryls including axial atropisomers are discussed in a systematic manner. Finally, a very recent advance of cyclic aryliodoniums employed as halogen-bonding organocatalysts is described.

show abstract

“…Te in the soil-water system was mainly found in the IV and 0 oxidation states [70]. Tellurium was found in strong association with Fe(III) hydroxide particles, with the Te(IV) and Te(VI) species forming inner-sphere complexes [71].…”

Section: Speciation Of Telluriummentioning

confidence: 99%