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DC Field | Value | Language |
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dc.contributor.author | Maureen Gumbo | en_US |
dc.contributor.author | Edward Ocansey | en_US |
dc.contributor.author | Banothile C. E. Makhubela | en_US |
dc.contributor.author | Francoise M. Amombo Noa | en_US |
dc.contributor.author | Lars Öhrström | en_US |
dc.contributor.author | Obieda S. Mudraj | en_US |
dc.contributor.author | Gift Mehlana | en_US |
dc.date.accessioned | 2024-03-28T13:13:32Z | - |
dc.date.available | 2024-03-28T13:13:32Z | - |
dc.date.issued | 2024-01-05 | - |
dc.identifier.uri | https://cris.library.msu.ac.zw//handle/11408/6050 | - |
dc.description.abstract | Carbon dioxide utilisation strategies are of paramount importance, yielding various products such as methanol and formate. Formate is an excellent hydrogen carrier in fuel cells, making it a highly exploitable chemical on the hydrogen energy storage front. Formate has an energy content that is at least five times greater than that of commercially available lithium-ion batteries. Herein, we have prepared mesoporous metal–organic frameworks (MOFs) (m-UiO-66 and m-UiO-66-NH2), using a Zr-based secondary building unit (SBU) and terephthalate linkers. The MOFs were used to support the half-sandwich (tetrazolylpyridyl)iridium(III) complex to make single-site catalyst (Ir(III)@m-UiO-66 and Ir(III)@m-UiO-66-NH2) for CO2 conversion to formate. Both Ir(III)@m-UiO-66 and Ir(III)@m-UiO-66-NH2 exhibited improved activity for CO2 hydrogenation to formate in a heterogeneous system. Ir(III)@m-UiO-66-NH2 and Ir(III)@m-UiO-66 had turnover numbers of 3313 and 3076 TON, respectively, under optimized conditions. X-ray photoelectron spectroscopy (XPS) showed possible interaction of the complex with the MOF as evidenced by a downfield shift in the binding energies of the Ir 4f electronic environment. The catalysts showed post-catalysis stability, as confirmed by PXRD, FTIR, and XPS. The Ir 4f binding energies of the materials after catalysis showed an up-field shift confirming the presence of Ir–H species which are the active species for catalysis. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Royal Society of Chemistry | en_US |
dc.relation.ispartof | Sustainable Energy & Fuels | en_US |
dc.subject | single site catalyst | en_US |
dc.subject | mesoporous UiO-66 | en_US |
dc.subject | carbon dioxide | en_US |
dc.subject | formate† | en_US |
dc.title | A single site catalyst supported in mesoporous UiO-66 for catalytic conversion of carbon dioxide to formate† | en_US |
dc.type | research article | en_US |
dc.identifier.doi | https://doi.org/10.1039/D3SE01465G | - |
dc.contributor.affiliation | Department of Chemical Sciences, Faculty of Science and Technology, Midlands State University, Private Bag 9055, Senga Road, Gweru, Zimbabwe; Research Centre for Synthesis and Catalysis, Department of Chemical Sciences, University of Johannesburg, Auckland Park Kingsway Campus, Auckland Park, South Africa | en_US |
dc.contributor.affiliation | Research Centre for Synthesis and Catalysis, Department of Chemical Sciences, University of Johannesburg, Auckland Park Kingsway Campus, Auckland Park, South Africa | en_US |
dc.contributor.affiliation | Research Centre for Synthesis and Catalysis, Department of Chemical Sciences, University of Johannesburg, Auckland Park Kingsway Campus, Auckland Park, South Africa | en_US |
dc.contributor.affiliation | Chalmers University of Technology, Department of Chemistry and Chemical Engineering, Göteborg, Sweden | en_US |
dc.contributor.affiliation | Chalmers University of Technology, Department of Chemistry and Chemical Engineering, Göteborg, Sweden | en_US |
dc.contributor.affiliation | Materials Discovery Research Unit, Advanced Research Centre, Royal Scientific Society, Amman 11941, Jordan | en_US |
dc.contributor.affiliation | Department of Chemical Sciences, Faculty of Science and Technology, Midlands State University, Private Bag 9055, Senga Road, Gweru, Zimbabwe | en_US |
dc.relation.issn | 2398-4902 | en_US |
dc.description.volume | 8 | en_US |
dc.description.startpage | 777 | en_US |
dc.description.endpage | 788 | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.cerifentitytype | Publications | - |
item.fulltext | With Fulltext | - |
item.openairetype | research article | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
Appears in Collections: | Research Papers |
Files in This Item:
File | Description | Size | Format | |
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Single Site Catalyst Supported in Mesoporous UiO.pdf | Abstract | 107 kB | Adobe PDF | View/Open |
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