| Autor: |
Chandan Kumar Tiwari, Shubasis Roy, Tal Tubul‐Sterin, Mark Baranov, Nitai Leffler, Mu Li, Panchao Yin, Alevtina Neyman, Ira A. Weinstock |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Angewandte Chemie (International ed. in English). |
| ISSN: |
1521-3773 |
| Popis: |
The formation of small 1 to 3 nm organic-ligand free metal-oxide nanocrystals (NCs) is essential to utilization of their attractive size-dependent properties in electronic devices and catalysis. We now report that hexaniobate cluster-anions, [Nb 6 O 19 ] 8- , can arrest the growth of metal-oxide NCs and stabilize them as water-soluble complexes. This is exemplified by formation of hexaniobate-complexed 2.4-nm monoclinic-phase CuO NCs ( 1 ), whose ca. 350 Cu-atom cores feature quantum-confinement effects that impart an unprecedented ability to catalyze visible-light water oxidation with no added photosensitizers or applied potentials, and at rates exceeding those of hematite NCs. The findings point to polyoxoniobate-ligand entrapment as a potentially general method for harnessing the size-dependent properties of small semiconductor NCs by utilizing them as the cores of versatile, entirely-inorganic complexes. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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