fig7

Figure 7. Electrocatalysts with high-index facets for the NtrRR. (A) TEM image, SAED pattern of a THH Cu NC (left panel), atomic model of (520) facet (middle), and Faraday efficiencies of various Cu catalysts (right). Reproduced with permission^[52]. Copyright 2022, Elsevier; (B) SEM image, TEM image, and the corresponding SAED patterns of concave TOH Au–Pd NCs (left panel), optimized structures of intermediates of ^*NO₃^-, ^*NO₂^- + ^*O, ^*NO₂^- and ^*NO + ^*O (middle), and free energy profiles for NtrRR on Au (111) and (331), and TOH Au–Pd NCs (right). Reproduced with permission^[53]. Copyright 2023, American Chemical Society; (C) Faraday efficiencies of main products at different working potentials of TOH Au–Pd NCs (left panel), NH₃ yield rate and Faraday efficiencies of Au (111), Au (331), and TOH Au–Pd NCs (middle), and FE of main products of Au (111), Au (331), and TOH Au–Pd NCs at -1.15 V vs SCE (right). Reproduced with permission^[53]. Copyright 2023, American Chemical Society. TEM: Transmission electron microscopy; SAED: selected area electron diffraction; THH: tetrahexahedron; NC: nanocrystals; SEM: scanning electron microscope; TOH: trisoctahedron; FE: Faraday efficiency; SCE: saturated calomel electrode.