Construction of ZnO/PPy/PAN Nanofiber Membrane as Heterojunction Photocatalyst with Enhanced Photocatalytic Activity

被引:0
作者
Yan, Hongsheng [1 ]
Xiong, Jie [1 ]
Du, Peijian [2 ]
Wu, Ermiao [3 ]
Pan, Tiandi [1 ,3 ,4 ]
Li, Ni [1 ]
机构
[1] Zhejiang Sci Tech Univ, Int Inst Silk Inst, Coll Text Sci & Engn, Hangzhou 310018, Peoples R China
[2] Inner Mongolia Univ Technol, Coll Light Ind & Text, Hohhot 010051, Peoples R China
[3] Ningbo Acad Prod & Food Qual Inspect, Ningbo Fiber Inspect Inst, Ningbo 315048, Peoples R China
[4] Tianjin Univ, Coll Mat Sci & Engn, Tianjin 300072, Peoples R China
关键词
ZnO nanorods; Polypyrrole (PPy) nanospheres; Polyacrylonitrile (PAN) nanofiber membrane; Photocatalysis; Organic dye degradation; ZNO NANOWIRES; DEGRADATION; EFFICIENT; REMOVAL; GROWTH;
D O I
10.1007/s12221-024-00839-3
中图分类号
TB3 [工程材料学]; TS1 [纺织工业、染整工业];
学科分类号
0805 ; 080502 ; 0821 ;
摘要
The construction of semiconductor heterojunctions is an effective way to enhance the photocatalytic activity. In this work, n-p heterojunction composed of ZnO nanorods and polypyrrole (PPy) nanospheres were loaded on polyacrylonitrile (PAN) nanofibers to fabricate ZnO/PPy/PAN nanofiber membranes (ZnO/PPy/PAN NFMs) via electrospinning, hydrothermal synthesis and chemical polymerization. The results showed that the photodegradation rate of ZnO/PPy/PAN NFM was about 4.8 times higher than that of ZnO/PAN NFM. Moreover, the membrane exhibited good cycling stability, which maintained the removal efficiency of rhodamine (RhB) at 79% after five cycles. The enhanced photocatalytic activity was mainly ascribed to the synergistic effect of PAN nanofibers adsorption and n-p heterojunctions catalysis, resulting in a narrow bandgap, an increase in the absorption of visible light and the separation efficiency of electron-hole. Meanwhile, the degradation mechanism of ZnO/PPy/PAN NFMs was proposed. This work provides a promising strategy to construct n-p heterojunction photocatalysts for removing organic pollutants in wastewater.
引用
收藏
页码:589 / 596
页数:8
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