论文部分内容阅读
硫化物作为一类重要的常见矿物,目前国内外对其表面矿物学特征研究有限。具体到硫化物固-液界面处的行为机理,前人的研究程度就更低了。笔者自行设计了一个Fe_(1-x)S-Cr~(6+)原电池,通过实测电动势(E)、t-E关系曲线、溶液可见光吸收谱及其λ-A关系曲线,阐明硫化物与Cr~(6+)溶液间的界面行为机理。认为其界面行为过程为:硫化物溶解→离子反应(氧化还原)→吸附Cr~(3+)。该原电池与一般原电池结构不同,其主要差别在于将反应电极和测量电极分开,从而解决电极反应过程中的浓度极化问题,提高了电化学实验的精度。该研究成果有助于揭示矿物—液体相互作用机理,完善和丰富表面矿物学研究内容,深化界面成矿理论,并对环境治理、矿物材料应用等开发领域具有重要的参考价值。
As a kind of important common minerals, sulfide has limited research on its surface mineralogy at home and abroad. Specific to the sulfide solid-liquid interface at the behavioral mechanism, the previous study to even lower. A Fe_ (1-x) S-Cr ~ (6+) galvanic cell was designed by ourselves. The relationship between electromotive force (E), tE, visible light absorption spectrum and λ- ~ (6 +) solution between the interface behavior mechanism. It is considered that the interfacial behavior process is as follows: sulfide dissolution → ionic reaction (redox) → adsorption of Cr ~ (3+). The original battery and the general structure of the original battery is different, the main difference is that the reaction electrode and the measurement electrode are separated, so as to solve the problem of concentration polarization in the electrode reaction process and improve the electrochemical experiment accuracy. The results of this study will help to reveal the mechanism of mineral-liquid interaction, improve and enrich the surface mineralogy, deepen the interface mineralization theory, and have important reference value in the field of environmental governance and the development of mineral materials applications.