| Abstract Scope |
Controlled synthesis of multicomponent nanostructures is critical for advancing functional materials in energy applications. Here, a Ti-MOF-derived strategy is used to fabricate porous Au-TiO2 nanostructures with highly dispersed ultrasmall Au nanoparticles and engineered metal-support interfaces. The resulting hierarchical architecture combines low Au loading, structural stability, and efficient mass transport. The optimized catalyst delivers 90% H2O2 selectivity, 98% Faradaic efficiency, and an H2O2 production rate of 72.2 mg/(L·h), while maintaining stable operation for 168 h. Structural characterization shows that the MOF-derived route enables control over nanoparticle dispersion and interfacial confinement, suppressing Au aggregation during processing. Density functional theory indicates that strong metal-support interactions regulate *OOH adsorption and the d-band center, thereby favoring the two-electron oxygen reduction pathway. This work demonstrates a controllable nanostructure design strategy for catalytic energy conversion. |