Continuous Microfluidic Synthesis of Pd Nanocubes and PdPt Core–Shell Nanoparticles and Their Catalysis of NO2 Reduction

• DOI: 10.1021/acsami.9b09701
• Publication Date: 2019-08-16T13:43:51Z
• Authors: Anna Pekkari; Zafer Say; Arturo Susarrey-Arce; Christoph Langhammer; Hanna Härelind; Victor Sebastian; Kasper Moth-Poulsen
• Keywords: Chemical reduction

Faceted colloidal nanoparticles are currently of immense interest due to their unique electronic, optical, and catalytic properties. However, continuous flow synthesis that enables rapid formation faceted single or multi-elemental composition is not trivial. We present a route for the uniformly sized Pd nanocubes PdPt core–shell in single-phase microfluidic reactor, which shaped with reaction time 3 min. The feature dendritic, high surface area Pt shell covering core, as verified using high-resolution scanning transmission electron microscopy energy dispersive X-ray spectroscopy. particles catalytically tested during NO2 reduction presence H2 pocket reactor. exhibited low-temperature activity (i.e., <136 °C) poor selectivity performance toward production N2O N2, whereas showed higher were found achieve better retaining its basic structure at relatively elevated temperatures, making unique, desirable synergic catalyst material potential use NOx abatement processes.