{"id":6514,"date":"2026-03-13T09:12:47","date_gmt":"2026-03-13T08:12:47","guid":{"rendered":"https:\/\/remade-project.eu\/?post_type=tribe_events&p=6514"},"modified":"2026-03-30T13:53:31","modified_gmt":"2026-03-30T11:53:31","slug":"mechanisms-of-pd-nanoparticle-formation-and-strong-metal-support-interaction-in-pd-tio2-revealed-by-operando-xas","status":"publish","type":"tribe_events","link":"https:\/\/remade-project.eu\/index.php\/event\/mechanisms-of-pd-nanoparticle-formation-and-strong-metal-support-interaction-in-pd-tio2-revealed-by-operando-xas\/","title":{"rendered":"Mechanisms of Pd nanoparticle formation and strong metal-support interaction in Pd\/TiO2 revealed by operando XAS"},"content":{"rendered":"
\n
Zoom webinar<\/a> | Replay on Youtube<\/a><\/h5>\n

Elizaveta KOZYR, <\/strong><\/p>\n

E. Kozyr1<\/sup><\/u>, P. Paciok2<\/sup>, R. Pellegrini3<\/sup>, M. Chiesa1<\/sup>, Elena Groppo1<\/sup>, L. Mino1<\/sup>, A. Bugaev4<\/sup><\/p>\n

1<\/sup>University of Turin, Italy; 2<\/sup>Forschungszentrum J\u00fclich GmbH, Germany; 3<\/sup>ALBAChimet S.p.A, Italy;
\n4<\/sup>Paul Scherrer Institute, Switzerland; elizaveta.kozyr@unito.it<\/strong><\/p>\n

Understanding the formation of active phases and metal-support interactions is essential for the rational design of efficient photocatalysts. In this work, Pd\/TiO2<\/sub> catalysts prepared by photodeposition and deposition-precipitation were investigated using a combination of operando synchrotron-based X-ray absorption spectroscopy (XAS) and complementary microscopic and spectroscopic techniques. A custom operando<\/em> photocatalytic cell enabled in situ monitoring of the Pd photodeposition process, revealing the formation of single-atom Pd(0) sites as an initial step followed by the growth of ~1 nm Pd nanoparticles with narrow size distribution. Photodeposited catalysts exhibit strong metal-support interaction (SMSI), associated with the presence of Ti\u00b3\u207a sites at the Pd\/TiO2<\/sub> interface and direct Pd-Ti interactions observed by XAS, EPR, and EELS. These features lead to enhanced stabilization of metallic Pd even under oxidizing conditions, in contrast to catalysts prepared by deposition-precipitation. The results highlight how synthesis pathways govern nanoparticle formation mechanisms and metal-support interactions in Pd\/TiO2<\/sub> photocatalysts.<\/p>\n

Acknowledgements<\/strong><\/p>\n

We thank ReMade@ARIE funded by the European Union as part of the Horizon Europe call HORIZON-INFRA-2021-SERV-01 under grant agreement number 101058414 and co-funded by the Swiss State Secretariat for Education, Research and Innovation (SERI) under contract number 22.00187 for the access to the HR-STEM measurements (ERC, Julich, Germany) and XAS measurements at SuperXAS beamline of Swiss Light Source.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Zoom webinar | Replay on Youtube Elizaveta KOZYR, E. Kozyr1, P. Paciok2, R. Pellegrini3, M. Chiesa1, Elena Groppo1, L. Mino1, A. Bugaev4 1University of Turin, Italy; 2Forschungszentrum J\u00fclich GmbH, Germany; […]<\/p>\n","protected":false},"author":3,"featured_media":6515,"template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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