“…Recently, metal vanadate has received great interest from the scientific community because of its excellent chemical stability, electronic properties, narrow optical band gap, and cost-effectiveness. − In previous years, various metal vanadate materials, which include MVO 4 , M 2 V 2 O 7 , MV 2 O 6 , M 3 V 2 O 8 , MV 2 O 4 , and MV 3 O 8 (herein, M= Zn, Ni, Fe or Mn), have received significant attention of the researchers due to their reasonable optoelectronic properties and environment-friendly nature. − Particularly, M 3 V 2 O 8 has been extensively used as a suitable electrode material for various optoelectronic applications . Mg 3 V 2 O 8 has various advantageous features and characteristics, which make it a desirable and promising material for photocatalytic applications . In a previous study, Mg 3 V 2 O 8 was adopted as a suitable active electrode material for water oxidation using visible-light irradiation .…”