"uuid","repository link","title","author","contributor","publication year","abstract","subject topic","language","publication type","publisher","isbn","issn","patent","patent status","bibliographic note","access restriction","embargo date","faculty","department","research group","programme","project","coordinates"
"uuid:9e5de706-0275-46b3-b074-aa291b9247d7","http://resolver.tudelft.nl/uuid:9e5de706-0275-46b3-b074-aa291b9247d7","Structure-activity relationships in metal organic framework derived mesoporous nitrogen-doped carbon containing atomically dispersed iron sites for CO2 electrochemical reduction","Sun, X. (TU Delft ChemE/Catalysis Engineering); Wang, R. (TU Delft ChemE/Catalysis Engineering); Ould-Chikh, Samy (King Abdullah University of Science and Technology); Osadchii, D. (TU Delft ChemE/Catalysis Engineering); Li, G. (TU Delft ChemE/Inorganic Systems Engineering; TU Delft ChemE/Catalysis Engineering); Aguilar, Antonio (Université Grenoble Alpes); Hazemann, Jean louis (Université Grenoble Alpes); Kapteijn, F. (TU Delft ChemE/Catalysis Engineering); Gascon, Jorge (TU Delft ChemE/Catalysis Engineering; King Abdullah University of Science and Technology)","","2019","Mesoporous nitrogen-doped carbon nanoparticles with atomically dispersed iron sites (named mesoNC-Fe) are synthesized via high-temperature pyrolysis of an Fe containing ZIF-8 MOF. Hydrolysis of tetramethyl orthosilicate (TMOS) in the MOF framework prior to pyrolysis plays an essential role in maintaining a high surface area during the formation of the carbon structure, impeding the formation of iron (oxide) nanoparticles. To gain inside on the nature of the resulting atomically dispersed Fe moieties, HERFD-XANES, EXAFS and valence-to-core X-ray emission spectroscopies have been used. The experimental spectra (both XAS and XES) combined with theoretical calculations suggest that iron has a coordination sphere including a porphyrinic environment and OH/H2O moieties responsible for the high activity in CO2 electroreduction. DFT calculations demonstrate that CO formation is favored in these structures because the free energy barriers of *COOH formation are decreased and the adsorption of *H is impeded. The combination of such a unique coordination environment with a high surface area in the carbon structure of mesoNC-Fe makes more active sites accessible during catalysis and promotes CO2 electroreduction.","Atomically dispersed sites; CO; Electroreduction; Iron","en","journal article","","","","","","Accepted Author Manuscript","","2021-09-25","","","ChemE/Catalysis Engineering","","",""
"uuid:edbcde5f-0ec6-4683-9fcd-891500d198a8","http://resolver.tudelft.nl/uuid:edbcde5f-0ec6-4683-9fcd-891500d198a8","Metal-Organic-Framework-Mediated Nitrogen-Doped Carbon for CO2 Electrochemical Reduction","Wang, R. (TU Delft ChemE/Catalysis Engineering); Sun, X. (TU Delft ChemE/Catalysis Engineering); Ould-Chikh, Samy (King Abdullah University of Science and Technology); Osadchii, D. (TU Delft ChemE/Catalysis Engineering); Bai, F. (TU Delft ChemE/Catalysis Engineering; TU Delft Applied Sciences); Kapteijn, F. (TU Delft ChemE/Catalysis Engineering); Gascon, Jorge (TU Delft ChemE/Catalysis Engineering; King Abdullah University of Science and Technology)","","2018","A nitrogen-doped carbon was synthesized through the pyrolysis of the well-known metal-organic framework ZIF-8, followed by a subsequent acid treatment, and has been applied as a catalyst in the electrochemical reduction of carbon dioxide. The resulting electrode shows Faradaic efficiencies to carbon monoxide as high as ∼78%, with hydrogen being the only byproduct. The pyrolysis temperature determines the amount and the accessibility of N species in the carbon electrode, in which pyridinic-N and quaternary-N species play key roles in the selective formation of carbon monoxide.","CO electrochemical reduction; electrocatalyst; MOF-mediated synthesis; nitrogen-doped carbon; ZIF-8","en","journal article","","","","","","Accepted Author Manuscript","","2019-05-18","Applied Sciences","","ChemE/Catalysis Engineering","","",""