Fig. 6: Structure and composition characterization of the multi-component heterogeneous TMN MLHSs.

a–d HAADF-STEM and EDS mapping images of MoN/WN MLHSs. e–i HAADF-STEM and EDS mapping images of MoN/WN/TiN MLHSs. j, k N₂ adsorption and desorption data of the MoN/WN and MoN/WN/TiN MLHSs. Scale bars are 200 nm. Source data are provided as a Source Data file.