Seekers of the lost lanthanum

Thornton, Brett F.; Burdette, Shawn C.

doi:10.1038/s41557-018-0208-3

Cited by 3 publications

(1 citation statement)

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“…As an important nuclear fuel, uranium commonly exists in the radioactive wastewater, which gives rise to the serious environmental pollution due to the long half-life and strong toxicity. [1][2][3] At present, the uranium in radioactive wastewater is generally treated by the series of extraction, solidification, and landfill, inducing the massive abandonment of uranium resource. [4][5][6][7] In another aspect, uranium has a variety of valences ranging from +3 to +6 because radioactive wastewater was deposited on the MoS 2 nanosheets with precise mass loading and high selectivity for the common coexisting ions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Uranium Single Atom from Radioactive Wastewater for Enhanced Water Dissociation and Hydrogen Evolution

Liu

Tang

Liu

et al. 2022

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As a common nuclide in radioactive wastewater, uranium (U) is generally treated by landfill, which induces the massive abandonment of uranium resources. In this work, a pulse voltammetry method for the synthesis of U single atoms on MoS 2 (U/MoS 2 ) nanosheets from radioactive wastewater for the electrocatalytic alkaline hydrogen evolution reaction (HER) is reported. The mass loading of U single atoms is facilely controlled with high selectivity for coexisting ions in radioactive wastewater. In the electrolyte of 1 m of KOH, U/MoS 2 nanosheets with 5.2% of U single atoms exhibit relatively low overpotentials of 72 mV at 10 mA cm −2 . The mechanistic study reveals that the HER on U/MoS 2 includes the water dissociation on U single atoms to form OH* and H transfer from OH* to adjacent S-edge atoms. This procedure exhibits decreased activation energy for transition state in water dissociation and optimized Gibbs free energy for H* adsorption.

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