Construction of rGO Supported Integrative NiFe₂O₄/g‐C₃N₄ Nanocomposite: Role of Charge Transfer for Boosting the OH^. Radical Production to Enhance the Photo‐Fenton Degradation

Abstract

The facile sol‐gel and hydrothermal method have been used to prepare the ternary heterojunction of rGO supported NiFe2O4/g‐C3N4 nanocomposite. The structural, morphological, optical, magnetic, and charge transport properties of the prepared nanoparticles were analyzed by various analytical methods. The supportive rGO helps to harvest the more amount of visible light and helps to electron transformation was confirmed by UV‐vis‐DRS and PL spectroscopy studies. The rGO acts as an electron transport supporting layer for enhancement of radical production for effective dye degradation reaction under LED and sunlight irradiation. In particular, 10GO/NFO/g‐CN ternary nanocomposite exhibits the highest photo‐Fenton degradation when compared to other photocatalysts. They produced a large amount of OH• radicals that were beneficial for the photocatalytic process. The possible reaction mechanism and the active species for the dye degradation process were investigated by elemental trapping experiment and TA test. The recycling process proves the stability of the prepared photocatalyst. Hence, the reported ternary heterojunction could be a superior candidate for environmental remediation applications.

Activation of Persulfate for Improved Naproxen Degradation Using FeCo2O4@g-C3N4 Heterojunction Photocatalysts

“…This result indicated that the FeCo 2 O 4 nanoparticles were deposited on g-C 3 N 4 in the nanocomposite and it reduces the d-space of conjugated aromatic systems. 13 …”

“…The vibrational behavior of the photocatalysts was analyzed by Fourier transform infrared (FTIR) spectroscopy and the recorded spectra are shown in Figure 1 b. g-C 3 N 4 shows characteristic peaks of the triazine unit, C–N heterocycles, and surface-adsorbed water molecules in the frequency ranges of 802 cm –1 , 1220–1650 cm –1 , and 3000–3300 cm –1 , respectively. 13 The transmittance peaks at 540 cm –1 and 650 cm –1 in FeCo 2 O 4 nanoparticles reveal the presence of metal–oxygen (M–O) stretching vibration. The composite photocatalyst has the FTIR spectrum of both g-C 3 N 4 and FeCo 2 O 4 , which represents the formation of a heterojunction between the nanoparticles.…”

Photocatalytic degradation of triclosan in visible-light-induced via CdS@TiO2-rGO nanocomposite

“…This is majorly due to the enhanced separation of charges and easier pathway for the movement of charge provided by the graphene sheets. rGO harvests the light in the visible light and promotes the motion of electrons as well as organic molecules within the nanocomposites [47]. The ternary composites have been applied for the Triclosan photodegradation.…”

Synthesis of Gd/N co-doped ZnO for enhanced UV-vis and direct solar-light-driven photocatalytic degradation

“…9(b) . The pseudo 1 st order kinetic relation is as follow 23–26 Ln( C / C 0 ) = − kt where C 0 and C refer to the dye concentration at initial and irradiation time. The term ‘ k ’ refers to the kinetic rate constant.…”