HAADF‐STEM observation of Au nanoparticles on TiO₂

Abstract

Gold nanoparticles deposited on a TiO

DFT Study of CO Oxidation Catalyzed by Au/TiO₂: Activity of Small Clusters

“…This choice reduces the lattice mismatch along the Au-Au bond to less than 2%. The average distance between the bottom facet of Au 10 and the uppermost Ti layer is calculated to be 0.31 nm, similar to 0.33 nm measured for Au nanoparticles deposited on TiO 2 [28]. Naturally, it is difficult to prove that this is the most stable geometry for the supported Au 10 , but at least this is 0.24 eV more stable than a planar geometry shown in Fig.…”

Contact Potential Difference of Au/TiO₂(110) Model Catalysts Measured by Kelvin Probe Force Microscopy

“…2, σ and h were obtained as 0.01 C/m 2 and 0.73 nm, respectively. Herein, we substituted the particle height into R (assuming the hemispherical shape of the particles), and assumed that d = 0.33 nm from the result of transmission electron microscopy [13]. In addition, when R is infinity, Eq.…”

Interplay of theoretical calculations and experiments for a study of catalysis by gold

“…In such gold NP catalysts, the direct observations by transmission electron microscopy (TEM) play an important role for the elucidation of the structures of gold NPs and the atomic configuration of hetero-junction between the supports and gold NPs. Akita and coauthors also revealed the contact structure between a gold NP and rutile TiO 2 (1 1 0) surface [20]. From these analyses, it was found that the distance between the bottom atomic layer of gold NP and the Ti atom layer of rutile TiO 2 (1 1 0) surface was 3.3Å and gold NPs were attached on the bridging oxygen layer of rutile TiO 2 (1 1 0) surface.…”