Abstract
AbstractCuO/TiO2 heterostructures have been synthesized via a facile low‐temperature solution method. The resultant heterostructures present a three‐dimensional hierarchical morphology of carambola‐like CuO integrated with TiO2 nanotubes (NTs), confirmed by means of SEM, TEM, EDS, XRD and XPS. And time‐dependent evolutions of morphology show that the CuO grow from the initial leaf‐shaped nanosheets and eventually form carambola‐like structures. The UV/Vis absorption spectrum indicates that the carambola‐like CuO/TiO2 NTs have strong absorption in the UV light region as well as in the visible light region. The study on evaluating photocatalytic activity indicates that the carambola‐like CuO/TiO2 NTs can degrade 40 % of Rhodamine B, exhibiting enhanced photocatalytic activity compared with TiO2 NTs. Moreover, the photocatalytic mechanism of the carambola‐like CuO/TiO2 NT heterostructures is expounded.
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