{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Liao F"],"funding":["Ministry of Science and Technology of the People&apos;s Republic of China (Chinese Ministry of Science and Technology)","Ministry of Science and Technology of the People&amp;apos;s Republic of China"],"pagination":["1248"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC9985653"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["14(1)"],"pubmed_abstract":["Metastable metal oxides with ribbon morphologies have promising applications for energy conversion catalysis, however they are largely restricted by their limited synthesis methods. In this study, a monoclinic phase iridium oxide nanoribbon with a space group of C2/m is successfully obtained, which is distinct from rutile iridium oxide with a stable tetragonal phase (P42/mnm). A molten-alkali mechanochemical method provides a unique strategy for achieving this layered nanoribbon structure via a conversion from a monoclinic phase K<sub>0.25</sub>IrO<sub>2</sub> (I2/m (12)) precursor. The formation mechanism of IrO<sub>2</sub> nanoribbon is clearly revealed, with its further conversion to IrO<sub>2</sub> nanosheet with a trigonal phase. When applied as an electrocatalyst for the oxygen evolution reaction in acidic condition, the intrinsic catalytic activity of IrO<sub>2</sub> nanoribbon is higher than that of tetragonal phase IrO<sub>2</sub> due to the low d band centre of Ir in this special monoclinic phase structure, as confirmed by density functional theory calculations."],"journal":["Nature communications"],"pubmed_title":["Iridium oxide nanoribbons with metastable monoclinic phase for highly efficient electrocatalytic oxygen evolution."],"pmcid":["PMC9985653"],"funding_grant_id":["2017YFA0204800"],"pubmed_authors":["Li Y","Liao F","Fan Z","Shao M","Ji Y","Zhu W","Zhong J","Kang Z","Shao Q","Yin K"],"additional_accession":[]},"is_claimable":false,"name":"Iridium oxide nanoribbons with metastable monoclinic phase for highly efficient electrocatalytic oxygen evolution.","description":"Metastable metal oxides with ribbon morphologies have promising applications for energy conversion catalysis, however they are largely restricted by their limited synthesis methods. In this study, a monoclinic phase iridium oxide nanoribbon with a space group of C2/m is successfully obtained, which is distinct from rutile iridium oxide with a stable tetragonal phase (P42/mnm). A molten-alkali mechanochemical method provides a unique strategy for achieving this layered nanoribbon structure via a conversion from a monoclinic phase K<sub>0.25</sub>IrO<sub>2</sub> (I2/m (12)) precursor. The formation mechanism of IrO<sub>2</sub> nanoribbon is clearly revealed, with its further conversion to IrO<sub>2</sub> nanosheet with a trigonal phase. When applied as an electrocatalyst for the oxygen evolution reaction in acidic condition, the intrinsic catalytic activity of IrO<sub>2</sub> nanoribbon is higher than that of tetragonal phase IrO<sub>2</sub> due to the low d band centre of Ir in this special monoclinic phase structure, as confirmed by density functional theory calculations.","dates":{"release":"2023-01-01T00:00:00Z","publication":"2023 Mar","modification":"2026-03-17T15:23:46.402Z","creation":"2025-02-18T23:35:21.689Z"},"accession":"S-EPMC9985653","cross_references":{"pubmed":["36871002"],"doi":["10.1038/s41467-023-36833-1"]}}