Bi-Polymer Electrospun Nanofibers Embedding Ag3PO4/P25 Composite for Efficient Photocatalytic Degradation and Anti-Microbial Activity

Catalysts

卷:10

Hassan Javed¹  Qilin Li²  Xiaochuan Huang²  Chang-Gu Lee³  SherJamal Khan⁴  Zunaira Habib⁴  Yousuf Jamal⁴  NasirMahmood Ahmad⁵ 

[1] Department of Chemistry, Rice University, 6100 Main Street MS 6398, Houston, TX 77005, USA;

[2] Department of Civil and Environmental Engineering, Rice University, 6100 Main Street MS 519, Houston, TX 77005, USA;

[3] Department of Environmental and Safety Engineering, Ajou University, Suwon 16499, Korea;

[4] Institute of Environmental Sciences and Engineering, National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan;

[5] Polymer Research lab, School of Chemical and Materials Engineering, National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan;

关键词: Ag₃PO₄/P25;    Escherichia coli;    methyl orange;    nanofibers;    photocatalytic degradation;    plug flow reactor;   

DOI  :  10.3390/catal10070784

来源: DOAJ

【 摘 要 】

Using a bi-polymer system comprising of transparent poly(methyl methacrylate) (PMMA) and poly(vinyl pyrrolidone) (PVP), a visible light active Ag₃PO₄/P25 composite was immobilized into the mats of polymeric electrospun nanofibers. After nanofibers synthesis, sacrificial PVP was removed, leaving behind rough surface nanofibers with easy access to Ag₃PO₄/P25 composite. The remarkable photocatalytic efficiency was attained using a PMMA and Ag₃PO₄/P25 weight ratio of 1:0.6. Methyl orange (MO) was used to visualize pollutant removal and exhibited stable removal kinetics up to five consecutive cycles under simulated daylight. Also, these polymeric nanofibers (NFs) revealed an important role in the destruction of microorganisms (E. coli), signifying their potential in water purification. A thin film fibrous mat was also used in a small bench scale plug flow reactor (PFR) for polishing of synthetic secondary effluent and the effects of inorganic salts were studied upon photocatalytic degradation in terms of total organic carbon (TOC) and turbidity removal. Lower flow rate (5 mL/h) resulted in maximum TOC and turbidity removal rates of 86% and 50%, respectively. Accordingly, effective Ag₃PO₄/P25 immobilization into an ideal support material and selectivity towards target pollutants could both enhance the efficiency of photocatalytic process under solar radiations without massive energy input.

【 授权许可】

Unknown