New Strategies for e‐Beam Characterization of Catalysts

Abstract

Building on the success of aberration correction and the construction of in situ reaction chambers, electron microscopy is poised to make fresh advances in catalyst characterization. More profitable use should be made of photons both as input drivers and as output signals. Secondary electron imaging can provide extra information about the support structure. When collected in coincidence with primary beam energy losses, the secondary electron signal may even open the way to surface barrier height measurement at surface facets on individual nanoparticles.

Transmission Electron Microscopy and the Science of Carbon Nanomaterials

“…Advanced transmission electron microscopy (TEM) techniques are powerful and versatile research tools for probing the structural information of complex nanomaterials in three distinct ways: in real space, in reciprocal space, and when used in a spectroscopic mode, in energy space . It provides local information of surface and bulk of samples at atomic scale and also reveals chemical, electronic, and three‐dimensional structural information . For electron microscopists, the past 80 years have been a wonderfully exciting time in nanomaterials science, ascribed to a continuous rapid development in all of its various modes and detectors, as shown in Figure .…”

Electron Microscopy of Solid Catalysts—Transforming from a Challenge to a Toolbox

“…Electron microscopy is the unique tool through which the atomic structure of individual nanoparticles was explored and resolved. ,− Microbeam electron diffraction (microdiffraction) and special imaging techniques (bright- and dark-field imaging, weak-beam imaging) can be applied to single particles for the determination of structure and morphology. , With the user-friendly interface of a modern TEM and the development of the CCD technique, these valuable and power methods are, unfortunately, replaced by direct imaging at high magnification. For small particles (<15 nm in size), high-resolution imaging has been developed into a routine tool for elucidating the particle structure with atomic resolution. , …”

Special Issue: Advanced Electron Microscopy for Catalysis

“…The production of vortex electron beam in an electron microscope is exciting 13. The applications of direct relevance in catalysis are still to be identified, the potential could be tremendous 14…”