fig8

Figure 8. Photocatalytic H₂ evolution for ZIF-8, CuWO₄, and ZIF-8@CuWO₄ composite with maximum H₂ evolution rates using 0.1 M Na₂S and 0.25 M Na₂SO₃ as sacrificial agents under (A) visible and (B) UV irradiations, respectively; (C) Impact of molarity of Na₂S (0.1-0.35 M) along with constant Na₂SO₃ (0.25 M) as sacrificial agents over the photocatalytic H₂ evolution rates for ZIF-8@CuWO₄ composite under UV irradiation.