Hydrogen production for various catalysts based on the Zn_1−xCd_xS composition without cocatalyst. Sacrificial agents and their concentration used are also included.

Catalyst	Cocatalyst	H2 production (mmol gcat−1)	Sacrificial agent	Year/reference
Zn0.56Cd0.44S	—	0.6	0.35 M Na2SO3 + 0.25 M Na2S	2010 (ref. 53)
Zn0.7Cd0.3S	—	1.7	0.30 M Na2SO3 + 0.25 M Na2S	2017 (ref. 79)
Zn0.5Cd0.5S	Fe0.3Pt0.7	4.5	0.35 M Na2SO3 + 0.25 M Na2S	2017 (ref. 80)
Zn0.7Cd0.3S	—	29.5	0.35 M Na2SO3 + 0.25 M Na2S	This work