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Instruments / Technical Area	Publication Details	Published	Actions
	Investigations of carbon nitride-supported MN3O4 oxide nanoparticles for ORR Alexander I. Large , Sebastian Wahl , Salvatore Abate , Ivan Da Silva , Juan Jose Delgado Jaen , Nicola Pinna , Georg Held , Rosa Arrigo Catalysts 10 DOI: 10.3390/catal10111289 Open Access Show Abstract ▼ Abstract: Earth-abundant Mn-based oxide nanoparticles are supported on carbon nitride using two different immobilization methods and tested for the oxygen reduction reaction. Compared to the metal free CN, the immobilization of Mn oxide enhances not only the electrocatalytic activity but also the selectivity towards the 4e- reduction reaction of O2 to H2O. The XPS analysis reveals the interaction of the pyridine N species with Mn3O4 nanoparticles being particularly beneficial. This interaction is realized—although to a limited extent—when preparing the catalysts via impregnation; via the oleic acid route it is not observed. Whilst this work shows the potential of these systems to catalyze the ORR, the main limiting factor is still the poor conductivity of the support which leads to overpotential.	Nov 2020
I22-Small angle scattering & Diffraction	One-Step Synthesis and Self-Assembly of Metal Oxide Nanoparticles into 3D Superlattices Andrea Pucci , Marc-georg Willinger , Feng Liu , Xiangbing Zeng , Valentina Rebuttini , Guylhaine Clavel , Xue Bai , Goran Ungar , Nicola Pinna Acs Nano 6 (5), 4382 - 4391 DOI: 10.1021/nn3010735 Show Abstract ▼ Abstract: A simple one-pot approach based on the “benzyl alcohol route” is introduced for the fabrication of highly ordered supercrystals composed of highly uniform 3–4 nm zirconia and rare-earth stabilized zirconia nanoparticles. The as-fabricated supercrystals reach sizes larger than 10 ?m and present well-defined 3D morphologies such as flower-like, rhombic dodecahedron, and bipyramids. This system is unique in that the supercrystals are formed in one-step directly in the reaction medium where the nanoparticles are synthesized. The uniformity in nanocrystal shape and size is attributed to the in situ formation of benzoate species that directs the nanoparticle growth and assembly. The low colloidal stabilization of the benzoate-capped nanoparticles in benzyl alcohol promotes the formation of supercrystals in solution by ?–? interaction between the in situ formed benzoate ligands attached to neighboring particles. By varying the reaction temperature and the nature of the doping the way the nanobulding blocks assemble in the supercrystals could be controlled. Standard FCC superlattice packings were found together with more unusual ones with P6/mmm and R3?m symmetries.	May 2012

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