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Synthesis of tunable ZnS-CuS microspheres and visible-light photoactivity for rhodamine B

机译:可调式ZnS-CuS微球的合成及若丹明B的可见光光活性

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Tunable ZnS-CuS microspheres were readily prepared via replacing the Zn~(2+) ions of solid ZnS microspheres with Cu~(2+) ions in an aqueous solution under a hydrothermal condition, and were then characterized by XRD, SEM, TEM, UV-Vis, PL and XPS techniques. The thickness of CuS shell on the surface of ZnS core can be controlled by changing the ion-exchange time, which plays an important role in the visible light photodegradation efficiency of rhodamine B in aqueous solution. Degradation rate can rapidly reach ca. 72% under visible light irradiation for 15 min and then ca. 98% after 60 min using the ZnS-CuS microspheres as the photocatalyst.
机译:通过在水热条件下用水溶液中的Cu〜(2+)离子代替固态ZnS微球的Zn〜(2+)离子,可以轻松制备可调谐的ZnS-CuS微球,然后通过XRD,SEM,TEM, UV-Vis,PL和XPS技术。可以通过改变离子交换时间来控制ZnS核表面上CuS壳的厚度,这对于若丹明B在水溶液中的可见光降解效率起着重要作用。降解率可以迅速达到约。 72%在可见光下照射15分钟,然后约60分钟后使用ZnS-CuS微球作为光催化剂可达到98%。

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