Surface-dependent formation of Zn clusters in ZnO single crystals by electron irradiation

Electron Beam Patterning of Metal–Organic Frameworks

“…For example, it was shown that electron attachment may reduce Cu 2+ to Cu + in HKUST-1 . However, Zn 2+ appears to be unaffected in ZIF-L, although e-beam-induced formation of Zn clusters in ZnO has been observed . With the multitude of constituent linkers and metal cations in MOFs, a plethora of e-beam-driven reactions are possible for introducing solubility contrast for patterning.…”

Unexpected Two-Dimensional Polarons Induced by Oxygen Vacancies in Layered Structure MoO3–x

“…Electron-beam (e-beam) irradiation inside the transmission electron microscope (TEM) is an effective tool for gradually increasing the V O concentrations while allowing the simultaneous monitoring of the atomic-scale structural changes of metal oxides. ,, Herein, MoO 3– x with ∼2% V O concentrations is prepared by low-dose e-beam irradiation on α-MoO 3 . Detailed structural characterizations reveal a previously ignored phase transition from primitive orthorhombic α-MoO 3 to an oxygen-deficient C-centered orthorhombic MoO 3– x ( O ′-MoO 3– x ) that maintains the layered crystal structure.…”

“…Electron-beam (e-beam) irradiation inside the transmission electron microscope (TEM) is an effective tool for gradually increasing the V O concentrations while allowing the simultaneous monitoring of the atomic-scale structural changes of metal oxides. 15,29,30 Herein, MoO Figure 1a shows the individual nanobelt after irradiation for ∼15 min. The non-irradiated region (below the white line) has more uniform contrast than the irradiated region (above the white line).…”

Revealing Surface Restraint-Induced Hexagonal Pd Nanocrystals via In Situ Transmission Electron Microscopy

“…Metal nanocrystals (NCs) have aroused extensive research interest due to their potential applications in thermocatalysis, − electrocatalysis, − and photocatalysis fields. , To achieve the desired performance, much effort has been devoted to precisely controlling the size, − shape, − composition, − and other structural parameters − of metal catalysts. Among these parameters, manipulating the phase structure of metal NCs is capable of profoundly tuning their physical and chemical behaviors, and in some cases unconventional phases even show better performance compared to their thermodynamically stable phases. , For example, Kusada et al reported that ruthenium NCs (∼3–5 nm) with face-centered cubic (fcc) phase could exhibit higher catalytic activity than its thermodynamically stable hexagonal close-packed (hcp) phase for CO oxidation .…”