Catalysis Letters, Vol.147, No.7, 1754-1764, 2017
Detection of Ambient Oxidation of Ultrasmall Supported Platinum Nanoparticles with Benchtop Powder X-Ray Diffraction
The ability of a benchtop powder X-ray diffractometer with a solid state detector to observe the ambient oxidation of ultrasmall (sub 2.5 nm) Pt particles, previously seen only with synchrotron XRD, is demonstrated. The oxidation is corroborated with STEM imaging and fast Fourier transform analysis.
Keywords:XRD;Spontaneous oxidation;Point of zero charge;Strong electrostatic adsorption;High resolution transmission electron microscopy;Fast Fourier transform