由不同浓度的硝酸铁和硝酸钴溶液合成固体相的等离子体溶液

K. Smirnova, D. Shutov, A. N. Ivanov, V. Rybkin
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引用次数: 0

摘要

等离子体与过渡金属盐溶液的物理化学相互作用的基本问题的解决在创造新材料和从重金属离子中净化水等领域具有实际应用价值。等离子体溶液合成是制备具有新性能的超细材料的一种简单有效的方法。研究了以硝酸铁钴溶液为阳极,在常压辉光放电作用下析出物的形成。结果表明,在30 ~ 70 mA的放电电流范围内,形成速率随放电电流的增大而增大。在工作过程中,硝酸盐的浓度发生了变化。浓度的选择是这样的,最终产物是化学计量的Fe2O3·CoO。动力学规律的研究结果表明,硝酸盐溶液的固相沉降分两个阶段进行。第一种是含有铁阴离子的颗粒的沉淀;第二个捕获是含钴颗粒的沉淀。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Plasma-solution synthesis of a solid phase from solutions of iron and cobalt nitrates of various concentrations
The solution of the fundamental problem of the physicochemical interaction of plasma with solutions of transition metal salts has practical applications in the field of creating new materials and purifying water from heavy metal ions. Plasma-solution synthesis has established itself as a simple and effective method for obtaining ultrafine materials with new properties. The formation of precipitation under the action of atmospheric pressure glow discharge on an iron and cobalt nitrates solution, which was the anode, was studied. It turned out that the rate of formation increases with an increase in the discharge current from 30 to 70 mA. In the course of work, the concentrations of nitrates were varied. The concentrations were chosen in such a way that the final product was stoichiometric Fe2O3·CoO. The result of the study of kinetic regularities indicates that the sedimentation of the solid phase from nitrate solutions occurs in two stages. The first is the precipitation of particles containing iron anions; the second capture is the precipitation of cobalt-containing particles.
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