Redox interaction in redox pair-doped alkali borosilicate melts

IF 3.2 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of Non-crystalline Solids Pub Date : 2024-12-09 DOI:10.1016/j.jnoncrysol.2024.123352

Inseo Kim , Kiseok Jeon , Kimoon Lee , Kidong Kim

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Abstract

The redox interaction behaviors of two redox pairs (Fe+Ce and Fe+Sn) including a single Fe were investigated in alkali alumino-borosilicate melts. The equilibrium states of the melts at a constant temperature, as well as their oxygen equilibrium pressures was determined by potentiometry. The same melts were subjected to voltammetry in the same equilibrium state to examine the Fe redox potential. The interactions between the Fe and Ce or Sn, as determined by the Fe redox ratio based on real oxygen equilibrium pressures, were checked thermodynamically and explicitly manifested by the standard free energy. By comparison of the foregoing results for the melts with the Fe²⁺ absorbance behavior at Vis-NiR spectra for the glasses, it was recognized that the redox interaction in the glass and melt state showed the same tendencies, supporting the derivation of the interaction from the melt state. Additionally, a comparison of the present melts with the results of a previous study on soda lime silicate melts was briefly discussed in terms of the redox interactions in the melt or glass state and the time required to reach the equilibrium state.

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来源期刊

Journal of Non-crystalline Solids 工程技术-材料科学：硅酸盐

CiteScore

6.50

自引率

11.40%

发文量

576

审稿时长

35 days

期刊介绍： The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid. In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.