光催化
异质结
材料科学
串联
金属
壳体(结构)
芯(光纤)
金属有机骨架
化学工程
电荷(物理)
纳米技术
光电子学
催化作用
物理化学
复合材料
化学
物理
冶金
吸附
工程类
量子力学
生物化学
作者
Yi Yang,Zipeng Xing,Weifeng Kong,Chunxu Wu,Hui Peng,Zhenzi Li,Wei Zhou
出处
期刊:Nanoscale
[The Royal Society of Chemistry]
日期:2022-01-01
卷期号:14 (39): 14741-14749
被引量:8
摘要
Interface engineering is regarded as an effective strategy for charge separation. Metal-organic framework (MOF)-5/CuO@ZnIn2S4 core-shell Z-scheme tandem heterojunctions with a three-dimensional floral spherical shape are prepared by a two-step solvothermal and oxidative method. The flower spherical core-shell structure enhances multiple reflections and refractions of light and thus improves light utilization efficiently. In addition, this core-shell structure can supply sufficient active sites for photocatalytic reactions. Meanwhile, the composition of Z-scheme tandem heterojunctions and the photothermal effect contributed to the spatial charge separation and accelerated the photocatalytic process. The photocatalytic hydrogen production rate of MOF-5/CuO@ZnIn2S4 (1938.3 μmol g-1 h-1) is 18 times higher than that of pristine MOF-5, and the photocatalytic degradation efficiency of 2,4-dichlorophenol and phenol can reach up to 98.7% and 97.3%, respectively. In addition, multiple cycle experiments demonstrate high stability, which is favorable for practical applications.
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