{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Zhu J"],"funding":["Natural Science Foundation of Jiangsu Province (Jiangsu Provincial Natural Science Foundation)","Natural Science Foundation of Shandong Province (Shandong Provincial Natural Science Foundation)","Natural Science Foundation of Shandong Province","National Natural Science Foundation of China","National Natural Science Foundation of China (National Science Foundation of China)","Taishan Scholar Foundation of Shandong Province","Natural Science Foundation of Jiangsu Province"],"pagination":["1565"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC10879110"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["15(1)"],"pubmed_abstract":["Cu-oxide-based catalysts are promising for CO<sub>2</sub> electroreduction (CO<sub>2</sub>RR) to CH<sub>4</sub>, but suffer from inevitable reduction (to metallic Cu) and uncontrollable structural collapse. Here we report Cu-based rock-salt-ordered double perovskite oxides with superexchange-stabilized long-distance Cu sites for efficient and stable CO<sub>2</sub>-to-CH<sub>4</sub> conversion. For the proof-of-concept catalyst of Sr<sub>2</sub>CuWO<sub>6</sub>, its corner-linked CuO<sub>6</sub> and WO<sub>6</sub> octahedral motifs alternate in all three crystallographic dimensions, creating sufficiently long Cu-Cu distances (at least 5.4 Å) and introducing marked superexchange interaction mainly manifested by O-anion-mediated electron transfer (from Cu to W sites). In CO<sub>2</sub>RR, the Sr<sub>2</sub>CuWO<sub>6</sub> exhibits significant improvements (up to 14.1 folds) in activity and selectivity for CH<sub>4</sub>, together with well boosted stability, relative to a physical-mixture counterpart of CuO/WO<sub>3</sub>. Moreover, the Sr<sub>2</sub>CuWO<sub>6</sub> is the most effective Cu-based-perovskite catalyst for CO<sub>2</sub> methanation, achieving a remarkable selectivity of 73.1% at 400 mA cm<sup>-2</sup> for CH<sub>4</sub>. Our experiments and theoretical calculations highlight the long Cu-Cu distances promoting *CO hydrogenation and the superexchange interaction stabilizing Cu sites as responsible for the superb performance."],"journal":["Nature communications"],"pubmed_title":["Superexchange-stabilized long-distance Cu sites in rock-salt-ordered double perovskite oxides for CO<sub>2</sub> electromethanation."],"pmcid":["PMC10879110"],"funding_grant_id":["52102258","BK20210447","tsqn202306309","ZR2023YQ012"],"pubmed_authors":["Zhu J","Chen Z","Zhang Z","Zhu Y","Zhang Y","Tian X","Jiang H","Huang M","Wang X","Bai X"],"additional_accession":[]},"is_claimable":false,"name":"Superexchange-stabilized long-distance Cu sites in rock-salt-ordered double perovskite oxides for CO<sub>2</sub> electromethanation.","description":"Cu-oxide-based catalysts are promising for CO<sub>2</sub> electroreduction (CO<sub>2</sub>RR) to CH<sub>4</sub>, but suffer from inevitable reduction (to metallic Cu) and uncontrollable structural collapse. Here we report Cu-based rock-salt-ordered double perovskite oxides with superexchange-stabilized long-distance Cu sites for efficient and stable CO<sub>2</sub>-to-CH<sub>4</sub> conversion. For the proof-of-concept catalyst of Sr<sub>2</sub>CuWO<sub>6</sub>, its corner-linked CuO<sub>6</sub> and WO<sub>6</sub> octahedral motifs alternate in all three crystallographic dimensions, creating sufficiently long Cu-Cu distances (at least 5.4 Å) and introducing marked superexchange interaction mainly manifested by O-anion-mediated electron transfer (from Cu to W sites). In CO<sub>2</sub>RR, the Sr<sub>2</sub>CuWO<sub>6</sub> exhibits significant improvements (up to 14.1 folds) in activity and selectivity for CH<sub>4</sub>, together with well boosted stability, relative to a physical-mixture counterpart of CuO/WO<sub>3</sub>. Moreover, the Sr<sub>2</sub>CuWO<sub>6</sub> is the most effective Cu-based-perovskite catalyst for CO<sub>2</sub> methanation, achieving a remarkable selectivity of 73.1% at 400 mA cm<sup>-2</sup> for CH<sub>4</sub>. Our experiments and theoretical calculations highlight the long Cu-Cu distances promoting *CO hydrogenation and the superexchange interaction stabilizing Cu sites as responsible for the superb performance.","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Feb","modification":"2025-04-05T00:31:15.673Z","creation":"2025-04-05T00:31:15.673Z"},"accession":"S-EPMC10879110","cross_references":{"pubmed":["38378629"],"doi":["10.1038/s41467-024-45747-5"]}}