Abstract Due to its porous structure, hydrophobic modified three dimensional melamine sponge (MS) was commonly used for high efficiency oil/water separation. Nevertheless, it does nothing to water-soluble pollutants. In order to deal with residual pollutants, the direct Z-scheme BiOI/CdS composites was constructed and loaded onto the melamine sponge which easily achieved efficient degradation and selective deoiling. Furthermore, traditional hydrophobic methods (such as grafting mercaptan, silanes and so on) had several drawbacks, hence a novel metal organic frame material ZIF-8 was adopted in order to attain the purpose of superhydrophobic. In this work, it has shown that the cyclic photodegradation efficiency of superhydrophobic BiOI/CdS/ZIF-8 melamine sponge (BCZ MS) could still achieve 92% after performing 4 cycles of degradation and the results indicated that BCZ MS has preeminent stability. Besides, it was verified by the capture experiment that the main active species was O2−.

中文翻译：

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新型超疏水 ZIF-8 直接修饰 Z 型碘化铋/硫化镉三聚氰胺海绵的制备，用于高效油水分离和可见光光降解

摘要 由于其多孔结构，疏水改性三维三聚氰胺海绵（MS）常用于高效油水分离。然而，它对水溶性污染物没有任何作用。为了处理残留污染物，构建了直接 Z 型 BiOI/CdS 复合材料并将其加载到三聚氰胺海绵上，轻松实现高效降解和选择性脱油。此外，传统的疏水方法（如接枝硫醇、硅烷等）存在一些缺陷，因此采用新型金属有机骨架材料 ZIF-8 以达到超疏水的目的。在这项工作中，结果表明，超疏水性 BiOI/CdS/ZIF-8 三聚氰胺海绵 (BCZ MS) 的循环光降解效率在进行 4 次降解循环后仍可达到 92%，结果表明 BCZ MS 具有卓越的稳定性。此外，捕获实验验证了主要活性物种为O2-。