PtRu bimetallic nanoparticles embedded in MOF-derived porous carbons for efficiently electrochemical sensing of uranium

Abstract

PtRu bimetallic nanoparticles embedded in MOF-derived porous carbons (PtRu-PCs) were synthesized by first loading PtRu bimetallic nanoparticles into a UiO66-NH2 host matrix and then going in situ carbonization at high temperatures. In the synthetic strategy, UiO66-NH2 was used not only as a precursor to limit the aggregation and migration of PtRu bimetallic nanoparticles, but also as a self-sacrificial template to improve the conductivity. The as-prepared PtRu-PCs were characterized by SEM, TEM, XRD, and XPS. The PtRu-PC-based sensor had excellent sensitivity with a detection limit of 0.024 μM (S/N = 3). The developed method was successfully applied to real water samples with a recovery rate of 92–107%.