Abstract
In this paper, g–C3N4/K0.5Na0.5NbO3 nanofibers heterojunction were synthesized via electrospinning and facile heat-treat method. According to XRD, Raman, SEM, TEM and XPS analysis, a heterojunction structure was formed in g–C3N4/K0.5Na0.5NbO3 nanofibers. Electrochemical impedance spectroscopy and transient photocurrent analysis indicated that 20 wt% g–C3N4/K0.5Na0.5NbO3 had the best interfacial charge transfer reaction and high separation efficiency of photogenerated carriers. The rate of photocatalytic hydrogen evolution is 96.3 μmol·g−1·h−1, which is 1.7 times that of simple mechanical mixed powders. This is attributed to the fact that the valence band maximum and conduction band minimum of g–C3N4/K0.5Na0.5NbO3 nanofibers heterojunction are more negative than the mechanical mixed powders, and the difference value between them reaches the maximum when the content of g–C3N4 is 20 wt%.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
