A Novel Hierarchical Structured Poly(lactic acid)/Titania Fibrous Membrane with Excellent Antibacterial Activity and Air Filtration Performance

Figure 13

SEM-EDX spectra of the PLA/TiO₂ fibrous membranes after exposure under visible light for 30 days: (a) FM1, (b) FM2, (c) FM3, (d) FM4, and (e) FM5. The inset tables are the corresponding atomic ratio and weight ratio of the detected elements.

(a)

(b)

(c)

(d)

(e)