Atom probe tomography is a well-established analytical instrument for imaging the 3D
structure and composition of materials with high mass resolution, sub-nanometer spatial …

We report a unique in situ instrument development effort dedicated to studying gas/solid
interactions relevant to heterogeneous catalysis and early stages of oxidation of materials …

Since the early discovery of the catalytic activity of gold at low temperature, there has been a
growing interest in Au and Au-based catalysis for a new class of applications. The …

The oxygen adsorption and its catalytic reaction with hydrogen on Pt–Rh single crystals
were studied at the nanoscale by Field Emission Microscopy (FEM) and Field Ion …

To make available atomic oxygen at the surface of a catalyst is the key step for oxidation
reactions on Au-based catalysts. In this context, Au-Ag alloys catalysts exhibit promising …

Nitric oxide hydrogenation is investigated on palladium and gold–palladium alloy
crystallites, ie the extremity of sharp tip samples aimed at modelling a single catalytic grain …

Various compositions and structural motifs of bimetallic AuM (M= Ni and Ag) nanoalloy
particles were investigated systematically in terms of structural, energetic, electronic, and …

Rh nanoparticles have been widely applied in catalytic reactions. How to understand and
further tune the shape evolution of Rh nanoparticles (NPs) under reaction condition is …

Recent efforts at PNNL have led to the development of in-situ Atom Probe Tomography
(ISAPT) and Operando Atom Probe (OAP), establishing PNNL as a key player in this …

We studied the catalytic NO2 (g)+ H2 (g)/Pt system on model platinum catalysts with
nanoscale spatial resolution by means of field emission microscopy (FEM). While the …