{"id":21875,"date":"2026-02-23T12:45:04","date_gmt":"2026-02-23T11:45:04","guid":{"rendered":"https:\/\/www.ehu.eus\/chemistry\/theory\/?p=21875"},"modified":"2026-03-03T15:44:35","modified_gmt":"2026-03-03T14:44:35","slug":"heterogeneous-catalysis-and-electrocatalysis","status":"publish","type":"post","link":"https:\/\/www.ehu.eus\/chemistry\/theory\/5_kt-seminars\/heterogeneous-catalysis-and-electrocatalysis\/","title":{"rendered":"Heterogeneous Catalysis and Electrocatalysis"},"content":{"rendered":"\n<p>Catalysis is essential in our current super-technological society. Most catalysts used in industry are porous, high-area solids with nanoparticles dispersed on the internal surfaces. The catalytic surfaces are heterogeneous in both composition and structure. Thus technological advances are often the result of trial-and-error discovery.&nbsp; Similarly, electrocatalysis has become crucial for applications such as efficient energy conversion in fuel cells. We aim to contribute to the development of the widely used Pt-based (electro)catalysis, with special emphasis on hydrogen fuel cells. Our goal is to theoretically design (electro)catalysts with optimized performance: activity, selectivity and durability, while further advancing key aspects of the current computational modeling of metal nanocatalysts.&nbsp;<br><\/p>\n\n\n\n<h5 class=\"wp-block-heading has-medium-font-size\">Selected Publications<\/h5>\n\n\n<div class=\"teachpress_pub_list\"><form name=\"tppublistform\" method=\"get\"><a name=\"tppubs\" id=\"tppubs\"><\/a><\/form><div class=\"teachpress_publication_list\"><div class=\"tp_publication tp_publication_article\"><div class=\"tp_pub_info\"><p class=\"tp_pub_author\"> Ugartemendia, Andoni;  Bergua, Ram\u00f3n M.;  Mercero, Jose M.;  Jimenez-Izal, Elisa<\/p><p class=\"tp_pub_title\"><a class=\"tp_title_link\" onclick=\"teachpress_pub_showhide('894','tp_links')\" style=\"cursor:pointer;\">Boosting synergistic effects between PtGe nanoalloys and 2D materials for PEMFC applications<\/a> <span class=\"tp_pub_type tp_  article\">Journal Article<\/span> <\/p><p class=\"tp_pub_additional\"><em>International Journal of Hydrogen Energy<\/em>, <strong>2024<\/strong>, 89, 233--253<\/p><p class=\"tp_pub_menu\"><span class=\"tp_resource_link\"><a id=\"tp_links_sh_894\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('894','tp_links')\" title=\"Show links and resources\" style=\"cursor:pointer;\">Links<\/a><\/span> | <span class=\"tp_bibtex_link\"><a id=\"tp_bibtex_sh_894\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('894','tp_bibtex')\" title=\"Show BibTeX entry\" style=\"cursor:pointer;\">BibTeX<\/a><\/span><\/p><div class=\"tp_bibtex\" id=\"tp_bibtex_894\" style=\"display:none;\"><div class=\"tp_bibtex_entry\"><pre>@article{Ugartemendia2024c,<br \/>\r\ntitle = {Boosting synergistic effects between PtGe nanoalloys and 2D materials for PEMFC applications},<br \/>\r\nauthor = {Andoni Ugartemendia and Ram\u00f3n M. Bergua and Jose M. Mercero and Elisa Jimenez-Izal},<br \/>\r\ndoi = {10.1016\/j.ijhydene.2024.09.279},<br \/>\r\nissn = {0360-3199},<br \/>\r\nyear  = {2024},<br \/>\r\ndate = {2024-11-01},<br \/>\r\nurldate = {2024-11-01},<br \/>\r\njournal = {International Journal of Hydrogen Energy},<br \/>\r\nvolume = {89},<br \/>\r\npages = {233--253},<br \/>\r\npublisher = {Elsevier BV},<br \/>\r\nkeywords = {},<br \/>\r\npubstate = {published},<br \/>\r\ntppubtype = {article}<br \/>\r\n}<br \/>\r\n<\/pre><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('894','tp_bibtex')\">Close<\/a><\/p><\/div><div class=\"tp_links\" id=\"tp_links_894\" style=\"display:none;\"><div class=\"tp_links_entry\"><ul class=\"tp_pub_list\"><li><i class=\"ai ai-doi\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/dx.doi.org\/10.1016\/j.ijhydene.2024.09.279\" title=\"Follow DOI:10.1016\/j.ijhydene.2024.09.279\" target=\"_blank\">doi:10.1016\/j.ijhydene.2024.09.279<\/a><\/li><\/ul><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('894','tp_links')\">Close<\/a><\/p><\/div><div class=\"tp_pub_image_bottom\"><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0360319924039880\" target=\"_blank\"><img decoding=\"async\" name=\"Boosting synergistic effects between PtGe nanoalloys and 2D materials for PEMFC applications\" src=\"https:\/\/ars.els-cdn.com\/content\/image\/1-s2.0-S0360319924039880-ga1_lrg.jpg\" style=\"max-width:-5px;\" alt=\"Boosting synergistic effects between PtGe nanoalloys and 2D materials for PEMFC applications\" \/><\/a><\/div><\/div><\/div><div class=\"tp_publication tp_publication_article\"><div class=\"tp_pub_info\"><p class=\"tp_pub_author\"> Ugartemendia, Andoni;  Mercero, Jose M.; de C\u00f3zar, Abel;  Melander, Marko M.;  Akola, Jaakko;  Jimenez\u2010Izal, Elisa<\/p><p class=\"tp_pub_title\"><a class=\"tp_title_link\" onclick=\"teachpress_pub_showhide('853','tp_links')\" style=\"cursor:pointer;\">Deposited PtGe Clusters as Active and Durable Catalysts for CO Oxidation**<\/a> <span class=\"tp_pub_type tp_  article\">Journal Article<\/span> <\/p><p class=\"tp_pub_additional\"><em>ChemCatChem<\/em>, <strong>2024<\/strong>, 16(3)<\/p><p class=\"tp_pub_menu\"><span class=\"tp_abstract_link\"><a id=\"tp_abstract_sh_853\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('853','tp_abstract')\" title=\"Show abstract\" style=\"cursor:pointer;\">Abstract<\/a><\/span> | <span class=\"tp_resource_link\"><a id=\"tp_links_sh_853\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('853','tp_links')\" title=\"Show links and resources\" style=\"cursor:pointer;\">Links<\/a><\/span> | <span class=\"tp_bibtex_link\"><a id=\"tp_bibtex_sh_853\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('853','tp_bibtex')\" title=\"Show BibTeX entry\" style=\"cursor:pointer;\">BibTeX<\/a><\/span><\/p><div class=\"tp_bibtex\" id=\"tp_bibtex_853\" style=\"display:none;\"><div class=\"tp_bibtex_entry\"><pre>@article{Ugartemendia2024,<br \/>\r\ntitle = {Deposited PtGe Clusters as Active and Durable Catalysts for CO Oxidation**},<br \/>\r\nauthor = {Andoni Ugartemendia and Jose M. Mercero and Abel de C\u00f3zar and Marko M. Melander and Jaakko Akola and Elisa Jimenez\u2010Izal},<br \/>\r\ndoi = {10.1002\/cctc.202301137},<br \/>\r\nissn = {1867-3899},<br \/>\r\nyear  = {2024},<br \/>\r\ndate = {2024-02-08},<br \/>\r\nurldate = {2024-02-08},<br \/>\r\njournal = {ChemCatChem},<br \/>\r\nvolume = {16},<br \/>\r\nnumber = {3},<br \/>\r\npublisher = {Wiley},<br \/>\r\nabstract = {&lt;jats:title&gt;Abstract&lt;\/jats:title&gt;&lt;jats:p&gt;Control of CO emissions raises serious environmental concerns in the current chemical industry, as well as in nascent technologies based on hydrogen such as electrolyzers and fuel cells. As for now, Pt remains one of the state\u2010of\u2010the\u2010art catalysts for the CO oxidation reaction, but unfortunately, it suffers from CO self\u2010poisoning. Recently, Pt\u2212Ge alloys were proposed to be an excellent alternative to reduce CO poisoning. This work investigates the impact of Ge content on the CO oxidation kinetics of Pt&lt;jats:sub&gt;4&lt;\/jats:sub&gt;Ge&lt;jats:sub&gt;n&lt;\/jats:sub&gt; subnanoclusters supported on MgO. A Ge concentration dependence of the reaction kinetics is found due to a strong synergy between Pt and Ge. Pt\u2212Ge nanoalloys act as a bifunctional catalyst by displaying dual adsorption sites; i.\u2009e., CO is adsorbed on Pt whereas oxygen binds to Ge, forming an alternative oxygen source GeO&lt;jats:sub&gt;x&lt;\/jats:sub&gt;. Besides, Ge alloying modifies the electronic structure of Pt (ligand effects) and reduces the affinity to CO. In this way, the competition between CO and O&lt;jats:sub&gt;2&lt;\/jats:sub&gt; adsorption and the overbinding of CO is alleviated, achieving a CO poisoning\u2010free kinetic regime. Our calculations suggest that Pt&lt;jats:sub&gt;4&lt;\/jats:sub&gt;Ge&lt;jats:sub&gt;3&lt;\/jats:sub&gt; is the optimal catalyst, evidencing that alloying composition is a parameter of extreme importance in nanocatalyst design. The work relies on global optimization search techniques to determine the accessibility of multiple structures at different conditions, mechanistic studies and microkinetic modeling.&lt;\/jats:p&gt;},<br \/>\r\nkeywords = {},<br \/>\r\npubstate = {published},<br \/>\r\ntppubtype = {article}<br \/>\r\n}<br \/>\r\n<\/pre><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('853','tp_bibtex')\">Close<\/a><\/p><\/div><div class=\"tp_abstract\" id=\"tp_abstract_853\" style=\"display:none;\"><div class=\"tp_abstract_entry\">&lt;jats:title&gt;Abstract&lt;\/jats:title&gt;&lt;jats:p&gt;Control of CO emissions raises serious environmental concerns in the current chemical industry, as well as in nascent technologies based on hydrogen such as electrolyzers and fuel cells. As for now, Pt remains one of the state\u2010of\u2010the\u2010art catalysts for the CO oxidation reaction, but unfortunately, it suffers from CO self\u2010poisoning. Recently, Pt\u2212Ge alloys were proposed to be an excellent alternative to reduce CO poisoning. This work investigates the impact of Ge content on the CO oxidation kinetics of Pt&lt;jats:sub&gt;4&lt;\/jats:sub&gt;Ge&lt;jats:sub&gt;n&lt;\/jats:sub&gt; subnanoclusters supported on MgO. A Ge concentration dependence of the reaction kinetics is found due to a strong synergy between Pt and Ge. Pt\u2212Ge nanoalloys act as a bifunctional catalyst by displaying dual adsorption sites; i.\u2009e., CO is adsorbed on Pt whereas oxygen binds to Ge, forming an alternative oxygen source GeO&lt;jats:sub&gt;x&lt;\/jats:sub&gt;. Besides, Ge alloying modifies the electronic structure of Pt (ligand effects) and reduces the affinity to CO. In this way, the competition between CO and O&lt;jats:sub&gt;2&lt;\/jats:sub&gt; adsorption and the overbinding of CO is alleviated, achieving a CO poisoning\u2010free kinetic regime. Our calculations suggest that Pt&lt;jats:sub&gt;4&lt;\/jats:sub&gt;Ge&lt;jats:sub&gt;3&lt;\/jats:sub&gt; is the optimal catalyst, evidencing that alloying composition is a parameter of extreme importance in nanocatalyst design. The work relies on global optimization search techniques to determine the accessibility of multiple structures at different conditions, mechanistic studies and microkinetic modeling.&lt;\/jats:p&gt;<\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('853','tp_abstract')\">Close<\/a><\/p><\/div><div class=\"tp_links\" id=\"tp_links_853\" style=\"display:none;\"><div class=\"tp_links_entry\"><ul class=\"tp_pub_list\"><li><i class=\"ai ai-doi\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/dx.doi.org\/10.1002\/cctc.202301137\" title=\"Follow DOI:10.1002\/cctc.202301137\" target=\"_blank\">doi:10.1002\/cctc.202301137<\/a><\/li><\/ul><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('853','tp_links')\">Close<\/a><\/p><\/div><div class=\"tp_pub_image_bottom\"><a href=\"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/full\/10.1002\/cctc.202301137\" target=\"_blank\"><img decoding=\"async\" name=\"Deposited PtGe Clusters as Active and Durable Catalysts for CO Oxidation**\" src=\"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/cms\/asset\/97174412-e0f9-446b-83fe-430c575b57d9\/cctc202301137-toc-0001-m.jpg\" style=\"max-width:-5px;\" alt=\"Deposited PtGe Clusters as Active and Durable Catalysts for CO Oxidation**\" \/><\/a><\/div><\/div><\/div><div class=\"tp_publication tp_publication_article\"><div class=\"tp_pub_info\"><p class=\"tp_pub_author\"> Madrigal-Carrillo, K. G.;  Rodriguez, J. I.;  Hernandez-Pichardo, M. L.;  Jimenez-Izal, E.<\/p><p class=\"tp_pub_title\"><a class=\"tp_title_link\" onclick=\"teachpress_pub_showhide('596','tp_links')\" style=\"cursor:pointer;\">Unraveling the effects of Fe and Mn promoters on the tungstated zirconia catalyst: A DFT study<\/a> <span class=\"tp_pub_type tp_  article\">Journal Article<\/span> <\/p><p class=\"tp_pub_additional\"><em>Applied Surface Science<\/em>, <strong>2022<\/strong>, 599<\/p><p class=\"tp_pub_menu\"><span class=\"tp_resource_link\"><a id=\"tp_links_sh_596\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('596','tp_links')\" title=\"Show links and resources\" style=\"cursor:pointer;\">Links<\/a><\/span> | <span class=\"tp_bibtex_link\"><a id=\"tp_bibtex_sh_596\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('596','tp_bibtex')\" title=\"Show BibTeX entry\" style=\"cursor:pointer;\">BibTeX<\/a><\/span><\/p><div class=\"tp_bibtex\" id=\"tp_bibtex_596\" style=\"display:none;\"><div class=\"tp_bibtex_entry\"><pre>@article{RN494,<br \/>\r\ntitle = {Unraveling the effects of Fe and Mn promoters on the tungstated zirconia catalyst: A DFT study},<br \/>\r\nauthor = {K. G. Madrigal-Carrillo and J. I. Rodriguez and M. L. Hernandez-Pichardo and E. Jimenez-Izal},<br \/>\r\nurl = {&lt;Go to ISI&gt;:\/\/WOS:000838193700002},<br \/>\r\ndoi = {10.1016\/j.apsusc.2022.154052},<br \/>\r\nissn = {0169-4332},<br \/>\r\nyear  = {2022},<br \/>\r\ndate = {2022-01-01},<br \/>\r\nurldate = {2022-01-01},<br \/>\r\njournal = {Applied Surface Science},<br \/>\r\nvolume = {599},<br \/>\r\nnote = {Madrigal-Carrillo, Karina G. Rodriguez, Juan I. Hernandez-Pichardo, Martha L. Jimenez-Izal, Elisa <br \/>\r\nJimenez-Izal, Elisa\/AAB-1990-2019 <br \/>\r\nJimenez-Izal, Elisa\/0000-0003-1127-2100; Madrigal, Karina\/0000-0002-3651-6493 <br \/>\r\n1873-5584},<br \/>\r\nkeywords = {},<br \/>\r\npubstate = {published},<br \/>\r\ntppubtype = {article}<br \/>\r\n}<br \/>\r\n<\/pre><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('596','tp_bibtex')\">Close<\/a><\/p><\/div><div class=\"tp_links\" id=\"tp_links_596\" style=\"display:none;\"><div class=\"tp_links_entry\"><ul class=\"tp_pub_list\"><li><i class=\"fas fa-globe\"><\/i><a class=\"tp_pub_list\" href=\"&lt;Go to ISI&gt;:\/\/WOS:000838193700002\" title=\"&lt;Go to ISI&gt;:\/\/WOS:000838193700002\" target=\"_blank\">&lt;Go to ISI&gt;:\/\/WOS:000838193700002<\/a><\/li><li><i class=\"ai ai-doi\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/dx.doi.org\/10.1016\/j.apsusc.2022.154052\" title=\"Follow DOI:10.1016\/j.apsusc.2022.154052\" target=\"_blank\">doi:10.1016\/j.apsusc.2022.154052<\/a><\/li><\/ul><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('596','tp_links')\">Close<\/a><\/p><\/div><div class=\"tp_pub_image_bottom\"><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0169433222015902\" target=\"_blank\"><img decoding=\"async\" name=\"Unraveling the effects of Fe and Mn promoters on the tungstated zirconia catalyst: A DFT study\" src=\"https:\/\/ars.els-cdn.com\/content\/image\/1-s2.0-S0169433222015902-ga1_lrg.jpg\" style=\"max-width:-5px;\" alt=\"Unraveling the effects of Fe and Mn promoters on the tungstated zirconia catalyst: A DFT study\" \/><\/a><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>matcat<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[78],"tags":[],"class_list":["post-21875","post","type-post","status-publish","format-standard","hentry","category-5_kt-seminars"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.ehu.eus\/chemistry\/theory\/wp-json\/wp\/v2\/posts\/21875","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ehu.eus\/chemistry\/theory\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ehu.eus\/chemistry\/theory\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ehu.eus\/chemistry\/theory\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ehu.eus\/chemistry\/theory\/wp-json\/wp\/v2\/comments?post=21875"}],"version-history":[{"count":30,"href":"https:\/\/www.ehu.eus\/chemistry\/theory\/wp-json\/wp\/v2\/posts\/21875\/revisions"}],"predecessor-version":[{"id":22101,"href":"https:\/\/www.ehu.eus\/chemistry\/theory\/wp-json\/wp\/v2\/posts\/21875\/revisions\/22101"}],"wp:attachment":[{"href":"https:\/\/www.ehu.eus\/chemistry\/theory\/wp-json\/wp\/v2\/media?parent=21875"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ehu.eus\/chemistry\/theory\/wp-json\/wp\/v2\/categories?post=21875"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ehu.eus\/chemistry\/theory\/wp-json\/wp\/v2\/tags?post=21875"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}