Research on the dissolution or demineralization of minerals can shed light on the biomineralization mechanism. The influence of inorganic ions or organic molecules on the stabilization of specific planes or step edges of crystals or biominerals has attracted significant interest, both in biomineralization and bioinspired crystallization systems. In this work, the influence of cationic and anionic ions on the oriented dissolution of calcite was investigated in detail. The side faces and cross-section geometries of the obtained micropyramids have a strong relationship with the cationic (metal) ions and the pH values of the aqueous solutions. Cations (metal ions) have a more significant influence than anions on the oriented dissolution process of calcite and the metastable side faces and step edges of calcite micropyramids, probably due to the strong interaction between cations and CO₃²⁻. Well-aligned c-axis oriented calcite micropyramid arrays with six side faces were fabricated in large scale by the oriented dissolution of calcite {104} planes in an undersaturated aqueous solution of Cu(NO₃)₂. The metastable step edges ([41] and [43]) were stabilized by Cu²⁺ ions in the solution. The pH values of the solutions have also had a key effect on the dissolution kinetics, dissolution rates and metastable side faces of the obtained one-dimensional microstructures of calcite.

中文翻译：

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研究阳离子和阴离子对方解石定向溶解的影响

矿物溶解或脱矿质的研究可以为生物矿化机理提供启示。无机离子或有机分子对晶体或生物矿物质的特定平面或台阶边缘的稳定性的影响在生物矿化和生物启发的结晶系统中都引起了极大的兴趣。在这项工作中，详细研究了阳离子和阴离子对方解石定向溶解的影响。所获得的微金字塔的侧面和横截面几何形状与阳离子（金属）离子和水溶液的pH值具有很强的关系。阳离子（金属离子）对方解石的定向溶解过程以及方解石微金字塔的亚稳侧面和台阶边缘的影响远大于阴离子。₃ ²⁻。通过将方解石{104}平面定向溶解在Cu（NO ₃） ₂的不饱和水溶液中，大规模制造了具有六个侧面的排列良好的c轴方解石微金字塔阵列。亚稳态台阶边缘（[41]和[43]）通过溶液中的Cu ²⁺离子稳定。溶液的pH值也对获得的方解石的一维微观结构的溶解动力学，溶解速率和亚稳侧面具有关键影响。