posted on 2023-08-16, 17:40authored byFahad A. Alharthi, Adel El Marghany, Naaser A. Y. Abduh, Imran Hasan
Herein, we reported
the fabrication of a magnesium vanadate-reduced
graphene oxide (Mg3V2O8-rGO) composite.
Further, the structural morphology of the as-prepared Mg3V2O8-rGO composite was studied by scanning
electron microscopy. Powder X-ray diffraction and energy-dispersive
X-ray spectroscopy techniques were also adopted to check the phase
purity and elemental composition of the prepared Mg3V2O8-rGO composite. Mg3V2O8-rGO possesses a band gap of 2.98 eV, which prompted us to
explore its photocatalytic activity for hydrogen (H2) evolution
reaction. The Mg3V2O8-rGO composite
demonstrated the generation of a reasonable amount of H2 evolution (97.45 μmol g–1), which is relatively
higher than that of pristine Mg3V2O8 (17.45 μmol g–1). This may be attributed
to the presence of synergism between Mg3V2O8 and rGO. In addition, Mg3V2O8-rGO also showed good stability and suggested its potential application
for photocatalytic H2 evolution applications. So far, no
report is available on the use of Mg3V2O8-rGO as a photocatalyst for H2 evolution. We propose
the potential role of the Mg3V2O8-rGO composite for photocatalytic H2 evolution applications.