Atomic-scale redox-potential-mediated engineering of 0D/2D Cu-Cu₂O/MO _x (OH) _y heterojunctions for efficient nitrate electroreduction to ammonia.

ABSTRACT: The precise construction of zero-dimensional/two-dimensional (0D/2D) heterojunctions is often hindered by interfacial lattice mismatches and uncontrolled phase transitions, limiting their efficacy in electrocatalysis. Herein, we report a widely applicable redox-potential-mediated strategy for the atomically defined fabrication of 0D/2D Cu-Cu₂O/MO _x (OH) _y heterojunctions (M = Ni, Fe, Mn, Co, Cr). This approach leverages the inherent differences in standard reduction potentials between Cu and transition metals to drive selective oxidation and ultrasound-assisted hydrolysis of pre-synthesized CuM alloy nanoparticles. This process results in situ phase separation, forming epitaxially embedded Cu-Cu₂O nanoparticles within ultrath

SUBMITTER: Zhang T 

PROVIDER: S-EPMC12835886 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature