fig8

Figure 8. (A) The FE-SEM images of the N-ZS3 sample. (B) HRTEM observations of the N-ZS3 sample. (C)The photocatalytic H₂ production on the N-ZS3 sample. (D) The H₂ evolution rate for the N-ZS3 sample. (E) The time-dependent H₂ evolution of ZnS, N-ZS1, N-ZS2, N-ZS3, N-ZS4, and N-ZS5 samples. (F) The elemental composition of the N-ZS3 sample. (G) EDS mapping images. Copyright 2019, Elsevier^[26]. FE-SEM: Field emission-scanning electron microscope; HRTEM: high-resolution transmission electron microscopy; EDS: energy dispersive X-ray specctroscopy.