“…12 The fusion of distinct quantum materials to create efficient heterostructures is drawing attention in the generation of maximum amounts of H 2 from photocatalytic watersplitting reactions. 13 Recently, different heterostructures have been introduced for water splitting, e.g., GaTe/ZnI 2 , 14 PG/GeP 2 and PG/SiP 2 , 15 ZnO/ZnS, 16 BiVO 4 /Zn 3 V 2 O 8 , 17 NiS/NiS 2 , 18 2Dporous Co-Mo nitrides, 19 BiVO 4 /CoFe MOF, 20 SnO 2 @MoS 2 , 21 C 2 N/ZnSe, 22 Ru@RuO 2 , 23 covalent triazine framework, 24 CdS/ quantum dots, 25,26 MXene supported catalysts, 27 transition metal chalcogenides, 28 nanosphere heterostructures, 29 etc. Despite some benefits, there have been reports of several drawbacks associated with them, such as wide band gap, inadequate stability, toxicity and high price.…”