Fig. 5

Characterization and large-scale synthesis of Ni catalysts with different loadings. a HAADF-STEM image for Ni-SAC with 2.5 wt.% Ni loading. b HAADF-STEM image for Ni-SAC with 3.4 wt.% Ni loading. c HAADF-STEM image for Ni-SAC with 4.5 wt.% Ni loading. d HAADF-STEM image for Ni-SAC with 5.3 wt.% Ni loading. Scale bar: 5 nm. e Photograph for Ni-SAC-2.5 synthesized in large scale. f HAADF-STEM image for Ni-SAC-2.5 synthesized in large scale. Scale bar: 5 nm