fig2
Figure 2. (A) H2 production activity under UV-vis light irradiation for CdS, SMSED/CdS, and SMSED (B) Mass ratio-dependent activity under UV-vis irradiation; (C) Dark catalytic H2 generation (after 1 h light pre-treatment); (D) H2 generation of SMSED/CdS under light irradiation/dark; (E) Relationship between photocatalytic and dark catalytic activities of different samples; (F) H2 generation of SMSED/CdS prepared by different methods; (G) H2 generation of SMSED/CdS measured in different sacrificial reagent systems; (H) AQE of SMSED/CdS related to light absorption; (I) Cyclic stability test. Each cycle consisting of 1 h of light exposure and 3 h of darkness, repeated for 6 cycles. SMSED: Sr2MgSi2O7:(Eu,Dy); UV-vis: ultraviolet-visible; AQE: apparent quantum efficiency; TEOA: triethanolamine; AA: ascorbic acid.
