Comparison of atomic scale dynamics for the middle and late transition metal nanocatalysts.

Autor:	Cao K; Electron Microscopy of Materials Science, Central Facility for Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, Ulm, 89081, Germany., Zoberbier T; Electron Microscopy of Materials Science, Central Facility for Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, Ulm, 89081, Germany., Biskupek J; Electron Microscopy of Materials Science, Central Facility for Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, Ulm, 89081, Germany., Botos A; School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom., McSweeney RL; School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom., Kurtoglu A; School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom., Stoppiello CT; School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom., Markevich AV; School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom., Besley E; School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom., Chamberlain TW; School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom. t.w.chamberlain@leeds.ac.uk.; Institute of Process Research and Development, School of Chemistry, University of Leeds, Leeds, LS2 9JT, United Kingdom. t.w.chamberlain@leeds.ac.uk., Kaiser U; Electron Microscopy of Materials Science, Central Facility for Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, Ulm, 89081, Germany. ute.kaiser@uni-ulm.de., Khlobystov AN; School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom. andrei.khlobystov@nottingham.ac.uk.
Jazyk:	angličtina
Zdroj:	Nature communications [Nat Commun] 2018 Aug 23; Vol. 9 (1), pp. 3382. Date of Electronic Publication: 2018 Aug 23.
DOI:	10.1038/s41467-018-05831-z
Abstrakt:	Catalysis of chemical reactions by nanosized clusters of transition metals holds the key to the provision of sustainable energy and materials. However, the atomistic behaviour of nanocatalysts still remains largely unknown due to uncertainties associated with the highly labile metal nanoclusters changing their structure during the reaction. In this study, we reveal and explore reactions of nm-sized clusters of 14 technologically important metals in carbon nano test tubes using time-series imaging by atomically-resolved transmission electron microscopy (TEM), employing the electron beam simultaneously as an imaging tool and stimulus of the reactions. Defect formation in nanotubes and growth of new structures promoted by metal nanoclusters enable the ranking of the different metals both in order of their bonding with carbon and their catalytic activity, showing significant variation across the Periodic Table of Elements. Metal nanoclusters exhibit complex dynamics shedding light on atomistic workings of nanocatalysts, with key features mirroring heterogeneous catalysis.
Databáze:	MEDLINE
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