Facile Synthesis of Heterostructured ZnO-ZnS Nanocables and Enhanced Photocatalytic Activity
Facile Synthesis of Heterostructured ZnO-ZnS Nanocables and Enhanced Photocatalytic Activity
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异质结构 ZnO-ZnS 纳米电缆的简便合成和增强的光催化活性
DOI：
10.1111/j.1551-2916.2010.03855.x
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发表时间：
2010-10-01
影响因子：
3.9
通讯作者：
Pan, Wei
中科院分区：
文献类型：
--
作者：
Lin, Dandan;Wu, Hui;Pan, Wei
通过模板辅助方法合成了由异质结构 ZnO-ZnS 纳米电缆组成的高效光催化剂。可以在硫化钠溶液中用电纺氧化锌（ZnO）纳米纤维合成厚度约为 10 nm 的可调厚度的 ZnS 壳，从而形成核壳纳米结构。对转化过程中样品的形貌和结构进行了表征，并以罗丹明B降解为探针反应评价了相应的紫外光催化活性。两种光催化剂的耦合表明更高的光子效率和增强的激子分离，从而使光催化活性比纯ZnO纳米纤维显着提高约10倍。
An efficient photocatalyst consisting of heterostructured ZnO-ZnS nanocables was synthesized via a template-assisted method. The ZnS shell with an adjustable thickness around 10 nm can be synthesized in a sodium sulfide solution from electrospun zinc oxide (ZnO) nanofibers, resulting in the core-shell nanostructures. The morphology and structure of the samples during the conversion process were characterized, and the corresponding ultraviolet photocatalytic activity was evaluated by using rhodamine B degradation as a probe reaction. The coupling of the two photocatalysts suggests a higher photon efficiency and an enhanced exciton separation, which lead to a remarkable improvement of the photocatalytic activity by similar to 10 times as compared with pure ZnO nanofibers.