Controlled Synthesis and Uniform Anchoring of Hollow Cu x O Nanocubes on Carbon Nanofiber for Enhanced Se(S)-Se(S) Bond Activation.

In the present study, we fabricated hollow cubic Cu x O nanoparticles (∼23 nm) incorporated with CNF (HC-Cu x O/CNF) through controlled thermal oxidation of solid cubic Cu 2 O nanoparticles (∼21 nm) supported on carbon nanofibers (SC-Cu 2 O/CNF) under airflow, exploiting the nanoscale Kirkendall effect. These hollow Cu x O nanocubes with increased surface areas exhibited outstanding catalytic activity for unsymmetrical chalcogenide synthesis under ligand-free conditions.