The photocatalytic activity of CdZnS (x = 0–1) and TiO/CdZnS composites in the reaction of hydrogen evolution under visible light irradiation (λ = 410 nm) was studied. In the system with an aqueous solution of CHOH used as a sacrificial agent, the maximum activity (1.6 mmol g h) was demonstrated by CdZnS. When using 0.1 M NaS/0.1 M NaSO as a sacrificial additive, the activity of all CdZnS photocatalysts significantly increased, reaching a maximum of 7.0 mmol g h in the presence of CdZnS. The deposition of 1% TiO on CdZnS by mixing in acetone made it possible to synthesize a highly effective composite with an activity of 8.3 mmol g h, which corresponds to the world level. A key result is confirmation of the high stability of this composite in both organic and inorganic environments, opening up prospects for its practical application in photocatalytic hydrogen evolution.
A.V. Zhurenok (Wed,) studied this question.