MoSe2/TiO2 nanofibers for cycling photocatalytic removing water pollutants under UV-Vis-NIR light
MoSe2/TiO2 nanofibers for cycling photocatalytic removing water pollutants under UV-Vis-NIR light
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MoSe2/TiO2纳米纤维用于在紫外-可见-近红外光下循环光催化去除水污染物
DOI：
10.1021/acsanm.9b02357
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发表时间：
2020
影响因子：
5.9
通讯作者：
Liu Yichun
中科院分区：
文献类型：
--
作者：
Yang Shu;Shao Changlu;Zhou Xuejiao;Li Xinghua;Tao Ran;Li Xiaowei;Liu Shuai;Liu Yichun
Highly effective utilization of solar light is very important for water treatment via photocatalysis. To achieve this goal, we designed and synthesized an efficient full-spectrum-response photocatalyst based on MoSe2/TiO2nanofibers. Ultrathin MoSe2nanosheets with controllable size and density were evenly grown on electrospun TiO2nanofibers by a simple solvothermal method. Under full spectrum irradiation, the photocatalytic reaction rates of MoSe2/TiO2nanofibers for the removal of rhodamine B, tetracycline hydrochloride and K2Cr2O7aqueous solutions were 7.7, 9.0, and 7.6 times higher than pure MoSe2, and were 2.4, 1.4, and 38 times higher than pure TiO2, respectively. The loading amounts of MoSe2nanosheets have strong effects on their performance. All ultraviolet, visible, and near-infrared light collected by the heterostructures can be well converted to strong oxidizing •O2–and •OH and reducing electrons, which are useful active species for removing water pollutants of organics or reducible metal ions. The uniform interface contact and hierarchical heterostructure improved their charge separation and transfer properties, whereas their ultralong one-dimensional and nanofibrous network structure ensured their excellent reusable property. This work presents a new vision in designing full-spectrum-response photocatalysts with efficient and reusable properties.
