fig10

Figure 10. (A and B) TEM, (C) SEAD, (D) EDS-mapping of hollow porous spinel (NiCuMnCoZnFe)₃O₄ NF (400 °C); (E) Photocatalysis product of (NiCuMnCoZnFe)₃O₄ NF (400 °C) catalyst; (F) Mechanism diagram of synergistic (NiCuMnCoZnFe)₃O₄ NF (400 °C) photoreduction of CO₂ to generate CH₄ and CO. Reproduced with approval^[84]. Copyright 2024, American Chemistry Society; (G) HRTEM image and EDS-mapping image of TiZrNbHfTaO₆N₃; (H) Effect image of TiZrNbHfTaO₆N₃ and some other comparative samples photoreducing CO₂ to generate CO. Reproduced with permission^[85]. Copyright 2022, Elsevier; (I) Product formation rate diagram of photoreduction of CO₂ by (Ga_0.2Cr_0.2Mn_0.2Ni_0.2Zn_0.2)₃O₄ synthesized under different temperature conditions; (J) Energy band structure of GSHEO800 and mechanism diagram of photoreduction of CO₂. Reproduced with permission^[86]. Copyright 2023, Elsevier. TEM: Transmission electron microscopy; SEAD: selected area diffraction; EDS: energy dispersive spectroscopy; NF: nanofiber; HRTEM: high-resolution transmission electron microscopy.