Latest progress in g-C<sub>3</sub>N<sub>4</sub> based heterojunctions for hydrogen production via photocatalytic water splitting: a mini review
Baker Rhimi, Chuanyi Wang, Detlef W. Bahnemann
Abstract
Abstract Graphitic carbon nitride based heterojunction photocatalysts have gained increasing attention in producing the clean energy source of hydrogen. Coupling carbon nitride (g-C 3 N 4 ) with other semiconductor materials or metals as co-catalysts is considered as an effective strategy to overcome the drawbacks of g-C 3 N 4 such as the quick recombination of photogenerated charges. In this review, the recent research advancements in the construction of g-C 3 N 4 -based heterojunctions as well as their different charge separation/transfer mechanisms will be systematically discussed, making special emphasis on the design and fabrication of type-II, Z-scheme, S-scheme and Schottky heterojunctions and their application towards H 2 generation from water splitting. Finally, a summary and some crucial issues, which should be further resolved for developing advanced g-C 3 N 4 -based heterojunction photocatalysts, are presented.