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Gold is the noblest metal—the most resistant to oxidation. However, nano-size gold has a unique ability to perform as a catalyst, even at low temperatures. The underlying mechanism for this size-dependent change in properties has puzzled scientists since the phenomenon was discovered in the late 1980s.
Dynamic structural changes of various gold nanostructures supported on CeO2(111) upon exposure to the reactant gases. (A–C) Model (A) and HRTEM images (B and C) of a 4-nm Au NP with ∼1,000 atoms; the arrow in C indicates the Au(100) surface reconstruction. (D–F) The
Dynamic structural changes of various gold nanostructures supported on CeO2(111) upon exposure to the reactant gases. (A–C) Model (A) and HRTEM images (B and C) of a 4-nm Au NP with ∼1,000 atoms; the arrow in C indicates the Au(100) surface reconstruction. (D–F) The 