The aim of this study was to determine the reactivity of the chalcopyrite (112) surface under industrially relevant leaching conditions. Leaching of the chalcopyrite (112) surface was carried out at approximately pH 1 and in the presence of 0.01 M ferric or ferrous. The atomic force microscopy (AFM) and Raman microspectroscopy analyses suggested that the chalcopyrite (112) surface was relatively inert, with no formation of elemental sulfur observed over 42 days of leaching. In addition, it was found that the distribution of Fe-S and Cu-S bonds was always negatively correlated, as revealed by Raman analysis. This suggested that the breakage of the Fe-S and Cu-S bonds did not occur concurrently at a specific reaction site. The rate of variation of surface roughness, as reflected by AFM data, also suggested that leaching of the chalcopyrite (112) surface in the ferric or ferrous solution medium likely occurred more rapidly in the initial stage (fewer than seven days) than in the later stage (after seven days).

中文翻译：

---

黄铜矿（112）表面浸出的原子力显微镜和拉曼光谱研究

这项研究的目的是确定在工业上相关的浸出条件下黄铜矿（112）表面的反应性。黄铜矿（112）表面的浸出在大约pH 1和0.01M铁或亚铁存在下进行。原子力显微镜（AFM）和拉曼光谱分析表明，黄铜矿（112）表面相对惰性，在42天的浸出过程中未观察到元素硫的形成。另外，如拉曼分析所揭示的，发现Fe-S和Cu-S键的分布总是负相关。这表明Fe-S和Cu-S键的断裂在特定的反应位点不会同时发生。AFM数据反映的表面粗糙度变化率，