{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Peng L"],"funding":["Spanish Ministry of Science and Innovation","Generalitat Valenciana"],"pagination":["476"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC10934795"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["14(5)"],"pubmed_abstract":["The quest for efficient catalysts based on abundant elements that can promote the selective CO<sub>2</sub> hydrogenation to green methanol still continues. Most of the reported catalysts are based on Cu/ZnO supported in inorganic oxides, with not much progress with respect to the benchmark Cu/ZnO/Al<sub>2</sub>O<sub>3</sub> catalyst. The use of carbon supports for Cu/ZnO particles is much less explored in spite of the favorable strong metal support interaction that these doped carbons can establish. This manuscript reports the preparation of a series of Cu-ZnO@(N)C samples consisting of Cu/ZnO particles embedded within a N-doped graphitic carbon with a wide range of Cu/Zn atomic ratio. The preparation procedure relies on the transformation of chitosan, a biomass waste, into N-doped graphitic carbon by pyrolysis, which establishes a strong interaction with Cu nanoparticles (NPs) formed simultaneously by Cu<sup>2+</sup> salt reduction during the graphitization. Zn<sup>2+</sup> ions are subsequently added to the Cu-graphene material by impregnation. All the Cu/ZnO@(N)C samples promote methanol formation in the CO<sub>2</sub> hydrogenation at temperatures from 200 to 300 °C, with the temperature increasing CO<sub>2</sub> conversion and decreasing methanol selectivity. The best performing Cu-ZnO@(N)C sample achieves at 300 °C a CO<sub>2</sub> conversion of 23% and a methanol selectivity of 21% that is among the highest reported, particularly for a carbon-based support. DFT calculations indicate the role of pyridinic N doping atoms stabilizing the Cu/ZnO NPs and supporting the formate pathway as the most likely reaction mechanism."],"journal":["Nanomaterials (Basel, Switzerland)"],"pubmed_title":["Nanometric Cu-ZnO Particles Supported on N-Doped Graphitic Carbon as Catalysts for the Selective CO<sub>2</sub> Hydrogenation to Methanol."],"pmcid":["PMC10934795"],"funding_grant_id":["Prometeo 2021/038 and Advanced Materials programme Graphica MFA/2022/023 with funding from European Union NextGenerationEU PRTR-C17.I1","CEX-2021-001230-S and PDI2021-0126071-OB-CO21 funded by MCIN/AEI/ 10.13039/501100011033"],"pubmed_authors":["Parvulescu V","Tian L","Garcia-Baldovi A","Garcia H","Sastre G","Peng L","Dhakshinamoorthy A","Jurca B","Primo A"],"additional_accession":[]},"is_claimable":false,"name":"Nanometric Cu-ZnO Particles Supported on N-Doped Graphitic Carbon as Catalysts for the Selective CO<sub>2</sub> Hydrogenation to Methanol.","description":"The quest for efficient catalysts based on abundant elements that can promote the selective CO<sub>2</sub> hydrogenation to green methanol still continues. Most of the reported catalysts are based on Cu/ZnO supported in inorganic oxides, with not much progress with respect to the benchmark Cu/ZnO/Al<sub>2</sub>O<sub>3</sub> catalyst. The use of carbon supports for Cu/ZnO particles is much less explored in spite of the favorable strong metal support interaction that these doped carbons can establish. This manuscript reports the preparation of a series of Cu-ZnO@(N)C samples consisting of Cu/ZnO particles embedded within a N-doped graphitic carbon with a wide range of Cu/Zn atomic ratio. The preparation procedure relies on the transformation of chitosan, a biomass waste, into N-doped graphitic carbon by pyrolysis, which establishes a strong interaction with Cu nanoparticles (NPs) formed simultaneously by Cu<sup>2+</sup> salt reduction during the graphitization. Zn<sup>2+</sup> ions are subsequently added to the Cu-graphene material by impregnation. All the Cu/ZnO@(N)C samples promote methanol formation in the CO<sub>2</sub> hydrogenation at temperatures from 200 to 300 °C, with the temperature increasing CO<sub>2</sub> conversion and decreasing methanol selectivity. The best performing Cu-ZnO@(N)C sample achieves at 300 °C a CO<sub>2</sub> conversion of 23% and a methanol selectivity of 21% that is among the highest reported, particularly for a carbon-based support. DFT calculations indicate the role of pyridinic N doping atoms stabilizing the Cu/ZnO NPs and supporting the formate pathway as the most likely reaction mechanism.","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Mar","modification":"2025-04-04T12:59:16.774Z","creation":"2025-04-04T12:59:16.774Z"},"accession":"S-EPMC10934795","cross_references":{"pubmed":["38470804"],"doi":["10.3390/nano14050476"]}}