Fig. 7 (a) H2 evolution activity of ZCS,
ZCS/CoP, ZCS/Co3O4 QDs and O/ZCS/P; (b)
H2 evolution activity of ZCS/CoP-x; (c)
H2 evolution activity of O/ZCS/P-x; (d)
H2 evolution activity of O/ZCS/P-3 under different light
sources; (e) H2 evolution activity of O/ZCS/P-3 under
different wavelength (1 h); (f) Photocatalytic H2evolution stability testing of O/ZCS/P-3.