Abstract
In this study, an octahedral MoO(2)/C composite was synthesized by calcining a molybdenum-based metal-organic framework (MOF) precursor. This unique octahedral architecture significantly enhances the electro-adsorption performance while ensuring excellent structural stability. The optimized material exhibited a high U(vi) adsorption capacity of 806.79 mg g(-1) from a 300 mg L(-1) initial solution under an applied potential of 1.2 V for 5 h. Moreover, it demonstrated excellent cycling stability, maintaining a U(vi) removal rate above 65% even after ten consecutive adsorption-desorption cycles using 0.1 mol L(-1) Na(2)CO(3) as the eluent. This work provides a novel design strategy for developing high-capacity, stable electrode materials for efficient uranium electrosorption.