The Sono-Photocatalytic Performance of PAN/g-C3N4/CdS Nanofibers Heterojunction

Abstract

The Polyacrylonitrile (PAN)/g-C3N4/CdS nanofiber sono-photocatalysts were successfully synthesized by an ordinary electrospining-chemical deposition method. The PAN/g-C3N4/CdS heterojunction nanofibers constructed with the CdS nanoparticles deposited on the PAN/g-C3N4 nanofibers. The g-C3N4/CdS heterojunction increase of light absorption and the construction of heterojunction can depress recombination of charge carrier and PAN nanofibers improve the recyclability successfully. Finally, a highly effective photocatalytic activity was performed by degradation of Rhodamine B (RhB) in visible light irradiation. Furthermore, an ultrasonic method is introduced into the sono-photocatalytic system to enhance the degradation efficiency of RhB ascribed to the synergistic effect of ultrasound.

Microwave-assisted synthesis of organic–inorganic hybrid porous g-C3N4/CdS–diethylenetriamine S-scheme heterojunctions with enhanced visible light hydrogen production

“…In figure 3(a), the TEM image of the PCN shows a porous shape with a large specific surface area. of CdS is 0.368 nm, corresponding to the (210) crystal plane of CdS [28][29][30].…”

Advances on sonophotocatalysis as a water and wastewater treatment technique: efficiency, challenges and process optimisation

“…Another promising strategy for enhancing sonophotocatalysis is by coupling the nanoscale semiconductor sonophotocatalyst with another lower band gap semiconductor i.e., creating heterojunctions ( Zhang et al, 2021 ). The close contact of semiconductors with different Fermi levels leads to the formation of an internal electric field.…”

“…These two processes can either be implemented separately or concurrently i.e., sonophotocatalysis, which is based on the synergistic interaction of the two individual processes and is therefore a more effective and versatile technique ( Wang and Cheng, 2023b ). Using a reactor such as that shown in Figure 1 ( Zhang et al, 2021 ), sonophotocatalysis generates clean water upon treatment of wastewater in the presence of a catalyst, which is exposed to both ultrasound and light irradiation.…”

“… Schematic diagram of the sonophotocatalytic reactor. Reprinted with permission from ( Zhang et al, 2021 ). …”

Photocatalytic Behavior for Removal of Methylene Blue from Aqueous Solutions Via Nanocomposites Based on Gd2o3/Cds and Cellulose Acetate Nanofibers

“…•and • OH species, where the • OH group is the major oxidizing agent in the degradation of organic pollutants(Yao et al, 2021). It is assumed that the electrons in CB can interact with oxygen molecules and modify oxygen radicals (O2 −• )(Zhang et al, 2021). Thus, it is potential that several of the O2 in CB interacts with the H2O and compose H2O2 which absorbs light and creates hydroxyl radicals (OH • )(Ni et al, 2021).…”