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From: A novel structure Ti/Fe₂O₃/Cu₂S/Co(OH)_x enhances the photoelectrochemical water splitting performance of iron oxide

A novel structure Ti/Fe<sub>2</sub>O<sub>3</sub>/Cu<sub>2</sub>S/Co(OH)<sub>x</sub> enhances the photoelectrochemical water splitting performance of iron oxide

Figure 2. (A-C) SEM images of Ti/Fe₂O₃, Ti/Fe₂O₃/Cu₂S, and Ti/Fe₂O₃/Cu₂S/Co(OH)_x photoanodes; (D and E) HRTEM images of Ti/Fe₂O₃/Cu₂S/Co(OH)_x photoanode; (F) SAED images of Ti/Fe₂O₃/Cu₂S/Co(OH)_x photoanode; (G) STEM image of Ti/Fe₂O₃/Cu₂S/Co(OH)_x photoanode; (H-L) EDS mapping (Fe, O, Cu, S and Co) of Ti/Fe₂O₃/Cu₂S/Co(OH)_x photoanode. SEM: Scanning electron microscope; HRTEM: high-resolution transmission electron microscopy; SAED: selected area electron diffraction; STEM: scanning transmission electron microscopy; EDS: energy dispersive spectroscopy.