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Updated: Jan 8, 2026

Precise Electrochemical Sizing of Individual Electro-Inactive Particles

Precise Electrochemical Sizing of Individual Electro-Inactive Particles

Published on: August 4, 2023

メディエーション電気化学酸化用途のための銀(II)の最適化と定量化

Briana R Schrage¹, Joshua E Leach², Ethan Villarreal³

¹Radioisotope Science and Technology Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37830, USA.

Dalton transactions (Cambridge, England : 2003)

|December 17, 2025

Abstract:

Mediated electrochemical oxidation (MEO) is a low-temperature, low-pressure, aqueous mineralization process used to treat organic waste. A powerful metal oxidant is used as a mediator in an acidic solution. Although Ce and Co are thoroughly studied mediators, Ag is a preferred choice because of the higher efficiency rates of mineralization observed with this system. Importantly, the quantification methodology and spectroscopic characteristics of the Ag(II) ion must be obtained. In this study, we determined molar extinction coefficients of the primary absorption band associated with the Ag(II) ion in 2-9 M HNO₃ solution. The optimization of Ag(II) electrooxidation was also determined by altering parameters such as HNO₃ concentration, mediator concentration, and temperature. The optimization studies and extinction coefficient data provide parameters for implementation of Ag as a suitable mediator for MEO processing of organic waste.

キーワード:

銀(II)イオンメディエーション電気化学酸化有機廃棄物鉱化最適化定量化

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A Dual-Functional Electroactive Filter Towards Simultaneously SbIII Oxidation and Sequestration

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