Nanoalloys:  From Theory to Applications of Alloy Clusters and Nanoparticles

Abstract

thanks to a fellowship from the French Ministry of Education. From 1995 on he was a staff member at the Physics Department of the University of Genova, first as Researcher and then as Associate Professor in Physics of Matter. He has been a Visiting Professor at Los Alamos National Laboratory (USA) and the Blaise Pascal University (Clemont-Ferrand, France). His research interests lie in theoretical and computational condensed matter physics and chemistry ranging from the theory of stochastic processes (escape rate theories) to surface diffusion of atoms and aggregates and crystal growth. More recently he has focused his interest in the computational modeling of nanoparticles, with special attention to their structural properties and growth dynamics. He is the author of about 120 papers in peer-reviewed journals.Julius Jellinek was born in the republic of Ukraine of the former Soviet Union. He graduated with distinction in theoretical high-energy physics from the

Graphene-based transition metal oxide nanocomposites for the oxygen reduction reaction

“…Sometimes, the well-structured lattice spacing of nanocrystals also can be calculated from XRD data by referring to the Bragg equation. [81][82][83] X-ray photoelectron spectroscopy (XPS). XPS is a meaningful device to investigate the chemical composition, element states, and the nature of heteroatom functionalized or doped graphene supported nanocomposites.…”

Charge distribution and Fermi level in bimetallic nanoparticles

“…In recent years, bimetallic nanoparticles have received increasing attention due to their promising electrocatalytic, [1][2][3] catalytic, [4][5][6][7][8] magnetic, 4,9,10 and optical properties. 4,11 The interaction of nanoparticles with their environment can, sometimes drastically, shift the Fermi level of electrons in the nanoparticles, influencing their chemical and electrochemical properties, as highlighted in a recent review.…”

Coexistence of plasmonic and magnetic properties in Au89Fe11 nanoalloys

“…31,34,35,39,40,45 This is a relevant point, since bottom-up synthetic approaches oen yield byproducts such as clustered iron atoms in the gold matrix, [36][37][38][39][40]47 iron-gold core-shell structures 11,34,35 or iron oxidegold heterostructures and agglomerates, [39][40][41]44 owing to the unfavorable thermodynamics in the formation of Au-Fe alloys. 28 Moreover, the AuFeNPs obtained by all previous methods were found to have problems related to surface accessibility, 15,[31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46] which is important to catalytic applications [18][19][20] and for conjugation with functional molecules. [11][12][13] Thus, new low-cost and non-toxic synthetic methods that allow the synthesis of large amounts of well-dispersed and accessible nanoparticles avoiding the thermodynamic limitations to alloy formation are needed.…”