We present the development of in situ wet environmental
transmission electron microscopy (Wet-ETEM) for direct probing
of controlled liquid–catalyst reactions at operating
temperatures on the nanoscale. The first nanoscale imaging and
electron diffraction of dynamic liquid hydrogenation and
polymerization reactions in the manufacture of polyamides reported
here opens up new opportunities for high resolution studies
of a wide range of solution–solid and
solution–gas–solid reactions in the chemical and
biological sciences.
