Abstract
Heterojunction nanofibers of PAN decorated with sulfate doped Ag3PO4 nanoparticles (SO42−-Ag3PO4/PAN electrospun nanofibers) were successfully fabricated by combining simple and versatile electrospinning technique with ion exchange reaction. The novel material possessing good flexibility could exhibit superior antibacterial property over sulfate undoped species (Ag3PO4/PAN electrospun nanofibers). FESEM, XRD, FTIR, XPS and DRS were applied to characterize the morphology, phase structure, bonding configuration, elemental composition, and optical properties of the as fabricated samples. FESEM characterization confirmed the successful incorporation of SO42−-Ag3PO4 nanoparticles on PAN electrospun nanofibers. The doping of SO42− ions into Ag3PO4 crystal lattice by replacing PO43− ions can provide sufficient electron-hole separation capability to the SO42−-Ag3PO4/PAN heterojunction to generate reactive oxygen species (ROS) under visible light irradiation and enhances its antibacterial performance. Finally, we hope this work may offer a new paradigm to design and fabricate other types of flexible self-supporting negative-ions-doped heterojunction nanofibers using electrospinning technique for bactericidal applications.
Highlights
Bacteria constitute large group of single celled microorganisms that thrive in diverse environment.Along with the beneficial importance of bacteria, they have many harmful effects on the human body, since some bacteria are the source of many serious diseases
Broad peaks centered at about 17◦ and 20◦ –23◦ in the composite nanofibers were assigned to the (100) and (110) crystallographic planes of PAN polymer, respectively [32]
The doping effect of SO4 2− into Ag3 PO4 crystal lattice was investigated from the magnified XRD patterns of both samples (Figure 1b)
Summary
Along with the beneficial importance of bacteria, they have many harmful effects on the human body, since some bacteria are the source of many serious diseases. Harmful and often drug-resistant bacteria, which are widespread in the environment can cause severe and deadly infections [1,2,3]. There is great deal of interest in developing antimicrobial agents with higher efficiency which would be promising for the economy. In this regard, different organic bactericides such as penicillin, streptomycin, tetracycline, etc., [4] are being used to kill bacteria; their use is limited due to serious issues of antimicrobial resistance and secondary pollution [5,6]. Inorganic materials can be the best alternative to organic bactericides because of their significant advantages, such as easy processing, thermal stability, being
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