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首页> 外文期刊>RSC Advances >Promotion of phenol photodegradation based on novel self-assembled magnetic bismuth oxyiodide core–shell microspheres
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Promotion of phenol photodegradation based on novel self-assembled magnetic bismuth oxyiodide core–shell microspheres

机译：基于新型自组装磁性碘氧化铋核-壳微球促进酚的光降解

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A novel visible-light driven “plates-over-nanospheres” (PONs) photocatalyst with BiOI nanoplates grown on the surface of Fe3O4 nanospheres was prepared using a facile method. By utilizing the self-assembly of the BiOI nanoplates, this environmentally friendly method challenges the classic synthesis of core–shell heterojunctions which always includes tedious synthesis steps as well as linker shells. With the introduction of magnetic cores, the PONs promoted the favorable degradation of phenol under visible-light irradiation. The enhanced visible-light photocatalytic performance of the PONs was ascribed to the unique synergistic effect between the magnetic cores and BiOI shells, resulting in the improved separation and inhibited recombination of photogenerated carriers. Moreover, the PONs maintained nearly constant photodegradation rates even after five cycles of photocatalytic experiments, without obvious catalyst deactivation. All in all, our work paves a novel way for the further design of heterojunction photocatalysts with fine recyclability and enhanced photocatalytic activity.
机译：Fe 3 O 4 <的表面上生长有BiOI纳米板的新型可见光驱动的“纳米板上空”（PONs）光催化剂。 / sub> 纳米球是使用简便的方法制备的。通过利用BiOI纳米板的自组装，这种环境友好的方法挑战了核-壳异质结的经典合成方法，该方法通常包括繁琐的合成步骤以及接头壳。随着磁芯的引入，PON在可见光照射下促进了苯酚的有利降解。 PON增强的可见光光催化性能归因于磁芯和BiOI壳之间的独特协同效应，从而改善了光生载流子的分离并抑制了重组。而且，即使在五个光催化实验循环之后，PON仍保持几乎恒定的光降解速率，而没有明显的催化剂失活。总而言之，我们的工作为进一步设计具有良好的可回收性和增强的光催化活性的异质结光催化剂开辟了一条新途径。

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