期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 10, 页码 8758-8769出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b00198
关键词
photocatalysis; UMOFNs; Ag3PO4; core-shell; degradation
资金
- National Natural Science Foundation of China [51672081]
- Key Program of Natural Science of Hebei Province [B2016209375]
- Hebei Natural Science Funds for the Joint Research of Iron and Steel [B2016209348]
- support program for one hundred excellent talents of innovation in Hebei provincial universities (III) [SLRC2017049]
Metal-organic frameworks (MOFs) are a new type of functional material that is self-assembled by metal ions and organic ligands. In this paper, a bimetal-organic framework was synthesized and stripped into two-dimensional nano sheets structure via an ultrasonic method. We coated the UMOFNs (ultrathinning MOFs into two-dimensional nano sheets) on Ag3PO4 nanoparticles to obtain Ag3PO4@UMOFNs core shell photocatalysts. Under visible-light irradiation, the degradation of phenol was 100% within 16 min, and the degradation of biphenyl A was 98.9% within 20 min via Ag3PO4@UMOFNs (5 wt %). These values were 1.6- and 1.8-times higher than Ag3PO4, respectively. The activity of the Ag3PO4@UMOFNs increased due to the synergistic effects. The pi-pi bonds of the organic ligands and weak interactions between UMOFNs and Ag3PO4 collectively promote charge transfer. In addition, matching energy-level structures and a sufficiently large contact area accelerate the separation of the photogenerated charges and improve the activity. This remarkably improves the photocatalytic activity.
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