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Figure 2. Characteristic results and illustration of ADMs on non-carbon substrates and illustration of ADMCs. (A) STM image of Pd/Cu single atom alloy with 0.01 ML Pd[30], reproduced from Ref.[30] with permission. Copyright 2013 Royal Society of Chemistry. (B and C) Aberration-corrected HAADF-STEM images of Pt1/Fe2O3 and Pt1/γ-Al2O3, respectively[31], reproduced from Ref.[31] with permission. Copyright 2017 American Chemical Society. (D) Aberration-corrected HAADF-STEM image of sAu/NiFe LDH[32], reproduced from Ref.[32] with permission. Copyright 2018 American Chemical Society. (E) Pt L3-edge EXAFS of Pt1/Ti3-xC2Ty and Ref.[33], reproduced from Ref.[33] with permission. Copyright 2019 American Chemical Society. (F) Illustration of the most stable configuration of Pt atom on phosphomolybdic acid/graphene[34], reproduced from Ref.[34] with permission. Copyright 2016 Wiley-VCH. (G and H) Illustration of Cu ADMCs formed by adsorption by surface -CN[38] and embedding into the carbon framework[40], reproduced from Ref.[38] (Copyright 2019 Wiley-VCH) and Ref.[40] (Copyright 2021 Springer Nature) with permission.
