Title : 2D/1D g-C3N4/MnO2 nanocomposite as a Z-scheme photocatalyst for preferable photocatalytic hydrogen production and dye degradation applications
Designing two different dimensional (2D/1D) mixed nanocomposite using layered and nanorods materials is considered to be an effective approach to acquire quite efficient photocatalysts. Herein, 2D/1D g-C3N4/MnO2 heterostructured photocatalyst was prepared via MnO2 nanorods inserted with nanolayered g-C3N4 using a facile pyrolysis method. The synthesized two different dimensional (2D/1D) mixed nanocomposite was characterized by a range of techniques to study its micromorphology, structure, chemical composition/states and so on. The g-C3N4/MnO2 nanocomposite reveals greatly enhanced photocatalytic activities for water splitting hydrogen productions and MB dye degradation, in comparison to the pristine g-C3N4 or pure MnO2 nanorods. Based on the optical absorption measurement, X-ray photoelectron spectra measurements, we can conclude that the g-C3N4 nanosheets and the MnO2 nanorods are together between them to creat a Z-scheme heterojunction, wherein the photo-induced electrons in MnO2 combined with the holes in g-C3N4, leading to enhanced charge carrier generation and utilization upon photoexcitation. This work furnished an effective procedure to construct the 2D/1D heterojunctions for the application in photocatalytic water splitting and dye treatment.
2D/1D g-C3N4/MnO2 nanocomposite, Z-scheme photocatalyst, photocatalytic hydrogen production and dye degradation