Talos F200i TEM

Large area fast acquisition of Gold-Nickel nanoparticles

Example of large-area, high-resolution EDS mapping with Dual-X on gold-nickel nanoparticles, acquired in less than one minute. Sample courtesy of J. Bursik, Institute of Physics of Materials, Brno.

Revealing details on Silver Nickel core-shell nanoparticles

Example of high-resolution EDS mapping of AgNi nanoparticles which are effectively used as catalysts for reduction of nitro compounds (for example 4-nitrophenol, 4-nitroaniline) and degradation of organic dyes. The individual EDS maps reveal that system Ag0.6Ni0.4 showed the highest catalytic activity for reduction and degradation reaction of nitro compounds and organic dyes. AgNi nanoparticles are also studied as catalysts for generation of hydrogen. In this use case, the hydrogen generation rate of AgNi nanoparticles was found to be much higher compared to Ag and Ni nanoparticles of similar size. Also a single map reveals that one of the shells is actually Sulphur instead of Nickel. Sample courtesy of J. Bursik, Institute of Physics of Materials, Brno.

Beam-sensitive analytics on Co-g-C3N4/Pt

Example of high-resolution EDS mapping of beam-sensitive material used for photocatalytic hydrogen evolution. The small nanoparticles (Pt) act as active sites for the photocatalytic reaction. These nanoparticles are studied to observe the structure of Co-g-C3N4 loaded with Pt nanoparticles and find the relationship between the position of Co atoms and Pt nanoparticles to analyze the reason for improved photocatalytic activity of this sample. In this experiment, it was assumed that Co should be atomically dispersed or located with a diameter of less than 1 nm (single atomic dispersion) on the surface of g-C3N4, and that the Pt nanoparticles should be deposited on the surface of Co-g-C3N4. This was confirmed by the results of elemental mapping data. Sample courtesy of Prof. ShengChun Yang, Xi’an Jiaotong University, China.