光催化
静电纺丝
纳米纤维
光降解
材料科学
异质结
可见光谱
聚丙烯腈
降级(电信)
复合数
纳米技术
化学工程
光电子学
复合材料
化学
催化作用
计算机科学
聚合物
有机化学
工程类
电信
作者
Guihua Chen,Ngie Hing Wong,Jaka Sunarso,Yong Wang,Zhenzhong Liu,Dan Chen,Dehua Wang,Guoliang Dai
标识
DOI:10.1016/j.apsusc.2022.155893
摘要
This work elaborated the synthesis and characterization of flexible Bi2MoO6/S-C3N4/ PAN composite fabricated by the electrospinning of the mixture of S-doped g-C3N4 (SCN) and PAN, which resulted in the formation of 1D SCN/PAN nanofibers (NFs) followed by the deposition of the 2D Bi2MoO6 (BMO) nanosheets on their surfaces via a solvothermal route. Among the synthesized NFs, 12 %SCN/PAN NFs made using the SCN/PAN ratio of 12 showed the highest photocatalytic activity for degrading 4-nitrophenol (4-NP), i.e., 83 % 4-NP degraded within 180 min. Further deposition of BMO onto 12 %SCN/PAN, represented by BMO-2/12 %SCN/PAN NFs sample, led to significant improvement in 4-NP photocatalytic degradation performance, enabling 94 % 4-NP to be degraded within 90 min. Such excellent performance can be ascribed to the synergetic effects of the unique hierarchical core–shell and S-scheme heterojunction properties. They could enhance the separation of electron-hole pairs and reserve redox capabilities, where h+ and ·O2– radicals were their main reactive species responsible for the photodegradation. Moreover, BMO-2/12 %SCN/PAN NFs can be efficiently reused due to their flexible nanofibrous mat-like structure. This work provides new insights into developing self-supporting photocatalysts for removing organic pollutants.
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