One-Pot Synthesis of Octahedral Cu2O Nanocages via a Catalytic Solution Route


  • This work was supported by NSFC (20 325 312, 20 473 003, and 20 233 010) and FANEDD (200 020). The authors thank Prof. Nianzu Wu for help on the XPS measurements. Supporting Information is available online from Wiley InterScience or from the authors.


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Unique single-crystalline octahedral Cu2O nanocages (see Figure) are synthesized in solution by the catalytic reduction of copper tartrate complex into octahedral Cu2O nanocrystals and a subsequent spontaneous hollowing process. A wealth of colorful nanostructures with widely tunable bandgaps in the range 2.6–2.2 eV are obtained. The obtained nanocages may find potential use in solar-energy conversion, catalysis, and as model systems for fundamental research.