56130 20200221144131.0 doi 10.1016/j.nanoen.2015.11.040 sideral 93184 ART-2016-93184 eng Gracia, J. Nano-heaters: New insights on the outstanding deposition of dielectric energy on perovskite nanoparticles 2016 Access copy available to the general public Unrestricted It has been experimentally observed that, in some Mott nanomaterials, outstanding dielectric losses may appear at microwave frequencies, leading to a rapid increase of temperature. This often takes place in association with the insulator to metal transition (IMT) in these materials. However, when other materials with a similar structure and composition are subjected to the same intensity of microwave (MW) irradiation, the observed heating is minimal. Here we show that the electron dynamics of these materials are responsible for their different heating behaviour. More specifically, for LaCoO3 perovskite nanoparticles, the spin shifts causing the IMT are also responsible for the observed heating behaviour. Under suitable conditions, the intense absorption of MW radiation leads to extremely high heating rates, above 600 degrees per second. The insight gained from this study has been used to design a directly heated catalytic system (LaCoO3 perovskite nanoparticles on a MW-transparent cordierite monolith) capable to operate under a stable, significant solid-gas temperature gradient. info:eu-repo/grantAgreement/EUR/ERC/HECTOR-267626 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 12.343 2016 CHEMISTRY, PHYSICAL 8 / 145 = 0.055 2016 Q1 T1 NANOSCIENCE & NANOTECHNOLOGY 6 / 87 = 0.069 2016 Q1 T1 PHYSICS, APPLIED 8 / 147 = 0.054 2016 Q1 T1 MATERIALS SCIENCE, MULTIDISCIPLINARY 12 / 275 = 0.044 2016 Q1 T1 4.745 2016 Electrical and Electronic Engineering 2016 Q1 Renewable Energy, Sustainability and the Environment 2016 Q1 Materials Science (miscellaneous) 2016 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion (orcid)0000-0003-3631-5592 Escuin, M. (orcid)0000-0002-4758-9380 Mallada, R. Universidad de Zaragoza (orcid)0000-0003-3363-2912 Navascues, N. (orcid)0000-0002-8701-9745 Santamaria, J. Universidad de Zaragoza 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 20 (2016), 20-28 Nano energy Nano energy 2211-2855 2664240 http://zaguan.unizar.es/record/56130/files/texto_completo.pdf Versión publicada 86496 http://zaguan.unizar.es/record/56130/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:56130 articulos driver 2020-02-21-13:04:32 ARTICLE