{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Ei Phyu Win P"],"funding":["MOST | National Natural Science Foundation of China (NSFC)","MOST | National Natural Science Foundation of China"],"pagination":["e2316553121"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC10945836"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["121(11)"],"pubmed_abstract":["Developing cost-effective and high-performance electrocatalysts for oxygen reduction reaction (ORR) is critical for clean energy generation. Here, we propose an approach to the synthesis of iron phthalocyanine nanotubes (FePc NTs) as a highly active and selective electrocatalyst for ORR. The performance is significantly superior to FePc in randomly aggregated and molecularly dispersed states, as well as the commercial Pt/C catalyst. When FePc NTs are anchored on graphene, the resulting architecture shifts the ORR potentials above the redox potentials of Fe<sup>2+/3+</sup> sites. This does not obey the redox-mediated mechanism operative on conventional FePc with a Fe<sup>2+</sup>-N moiety serving as the active sites. Pourbaix analysis shows that the redox of Fe<sup>2+/3+</sup> sites couples with HO<sup>-</sup> ions transfer, forming a HO-Fe<sup>3+</sup>-N moiety serving as the ORR active sites under the turnover condition. The chemisorption of ORR intermediates is appropriately weakened on the HO-Fe<sup>3+</sup>-N moiety compared to the Fe<sup>2+</sup>-N state and thus is intrinsically more ORR active."],"journal":["Proceedings of the National Academy of Sciences of the United States of America"],"pubmed_title":["Molecular architectures of iron complexes for oxygen reduction catalysis-Activity enhancement by hydroxide ions coupling."],"pmcid":["PMC10945836"],"funding_grant_id":["22002119 22227806"],"pubmed_authors":["Yang J","Ning S","Sun Q","Huang X","Fu G","Wang J","Ei Phyu Win P","Xia XH"],"additional_accession":[]},"is_claimable":false,"name":"Molecular architectures of iron complexes for oxygen reduction catalysis-Activity enhancement by hydroxide ions coupling.","description":"Developing cost-effective and high-performance electrocatalysts for oxygen reduction reaction (ORR) is critical for clean energy generation. Here, we propose an approach to the synthesis of iron phthalocyanine nanotubes (FePc NTs) as a highly active and selective electrocatalyst for ORR. The performance is significantly superior to FePc in randomly aggregated and molecularly dispersed states, as well as the commercial Pt/C catalyst. When FePc NTs are anchored on graphene, the resulting architecture shifts the ORR potentials above the redox potentials of Fe<sup>2+/3+</sup> sites. This does not obey the redox-mediated mechanism operative on conventional FePc with a Fe<sup>2+</sup>-N moiety serving as the active sites. Pourbaix analysis shows that the redox of Fe<sup>2+/3+</sup> sites couples with HO<sup>-</sup> ions transfer, forming a HO-Fe<sup>3+</sup>-N moiety serving as the ORR active sites under the turnover condition. The chemisorption of ORR intermediates is appropriately weakened on the HO-Fe<sup>3+</sup>-N moiety compared to the Fe<sup>2+</sup>-N state and thus is intrinsically more ORR active.","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Mar","modification":"2025-04-26T03:33:10.241Z","creation":"2025-04-06T10:50:50.779Z"},"accession":"S-EPMC10945836","cross_references":{"pubmed":["38437553"],"doi":["10.1073/pnas.2316553121"]}}