Antimony (Sb) based compounds such as SbO and SbS have shown promises in electronics, catalysis and sensing devices. Their functional performances can be further improved by integration with other materials to from composites or heterostructures, which however, usually require tedious procedures with poor morphology control. Herein, we realized direct hydrothermal synthesis of SbO/SnO heterostructures and SbS/SnS heterostructures by using liquid-phase exfoliated two-dimensional (2D) Sb nanoflakes as precursors. Compared to directly using SbCl salt as the reactant, using the Sb nanoflakes enabled the slow release of Sb ions which benefited the better controlled nucleation and growth of SbO (or SbS) acting as growth templates for the further deposition of SnO (or SnS). As a demonstration, the as-prepared SbS/SnS heterostructures were employed for photocatalytic methylene blue (MB) degradation, which exhibited a faster degradation rate compared to SbS or SnS alone. Our work offers an alternative strategy with elemental 2D materials as precursors for the preparation of heterostructured functional materials.

中文翻译：

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锑衍生异质结构的液相控制合成


锑 (Sb) 基化合物（例如 SbO 和 SbS）在电子、催化和传感设备领域显示出应用前景。它们的功能性能可以通过与其他材料集成形成复合材料或异质结构来进一步改善，然而，这通常需要繁琐的程序且形态控制较差。在此，我们利用液相剥离的二维（2D）Sb纳米片作为前驱体，实现了SbO/SnO异质结构和SbS/SnS异质结构的直接水热合成。与直接使用SbCl盐作为反应物相比，使用Sb纳米片能够缓慢释放Sb离子，这有利于更好地控制SbO（或SbS）的成核和生长，作为SnO（或SnS）进一步沉积的生长模板。作为演示，所制备的 SbS/SnS 异质结构用于光催化亚甲基蓝 (MB) 降解，与单独的 SbS 或 SnS 相比，其降解速率更快。我们的工作提供了一种替代策略，以元素二维材料作为制备异质结构功能材料的前体。