{"id":344,"date":"2026-04-15T13:59:37","date_gmt":"2026-04-15T13:59:37","guid":{"rendered":"https:\/\/citations.tools.bio-logic.fr\/?p=344"},"modified":"2026-04-15T13:59:37","modified_gmt":"2026-04-15T13:59:37","slug":"the-challenge-of-achieving-a-high-density-of-fe-based-active-sites-in-a-highly-graphitic-carbon-matrix","status":"publish","type":"post","link":"https:\/\/citations.tools.bio-logic.fr\/?p=344","title":{"rendered":"The Challenge of Achieving a High Density of Fe-Based Active Sites in a Highly Graphitic Carbon Matrix"},"content":{"rendered":"<h4>DOI:<\/h4>\n<p><a href=\"https:\/\/doi.org\/10.3390\/catal9020144\" target=\"_blank\" rel=\"noopener\">10.3390\/catal9020144<\/a><\/p>\n<h4>Authors:<\/h4>\n<p>Jingkun Li, Qingying Jia, Sanjeev Mukerjee, Moulay Tahar Sougrati, Goran Dra\u017ei\u0107, Andrea Zitolo, Fr\u00e9d\u00e9ric Jaouen<\/p>\n<h4>Abstract:<\/h4>\n<p>As one of the most promising platinum group metal-free (PGM-free) catalysts for oxygen reduction reaction (ORR), Fe\u2013N\u2013C catalysts with a high density of FeNx moieties integrated in a highly graphitic carbon matrix with a proper porous structure have attracted extensive attention to combine the high activity, high stability and high accessibility of active sites. Herein, we investigated a ZnCl2\/NaCl eutectic salts-assisted ionothermal carbonization method (ICM) to synthesize Fe\u2013N\u2013C catalysts with tailored porous structure, high specific surface area and a high degree of graphitization. However, it was found to be challenging to anchor a high density of FeNx sites onto highly graphitized carbon. Iron precursors with preexisting Fe\u2013N coordination were required to form FeNx sites in the nitrogen-doped carbon with a high degree of graphitization, while individual Fe and N precursors led to a Fe\u2013N\u2013C catalyst with poor-ORR activity. This provides valuable insights into the synthesis-structure relationship. Moreover, the FeNx moieties were identified as the major active sites in acidic conditions, while both FeNx sites and Fe2O3 were found to be active in alkaline medium.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>DOI: 10.3390\/catal9020144 Authors: Jingkun Li, Qingying Jia, Sanjeev Mukerjee, Moulay Tahar Sougrati, Goran Dra\u017ei\u0107, Andrea Zitolo, Fr\u00e9d\u00e9ric Jaouen Abstract: As one of the most promising platinum group metal-free (PGM-free) catalysts for oxygen reduction reaction (ORR), Fe\u2013N\u2013C catalysts with a high density of FeNx moieties integrated in a highly graphitic carbon matrix with a proper porous [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-344","post","type-post","status-publish","format-standard","hentry","category-its-e"],"_links":{"self":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts\/344","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=344"}],"version-history":[{"count":0,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts\/344\/revisions"}],"wp:attachment":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=344"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=344"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=344"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}