To overcome the shortage of freshwater resources and provide clean water for worldwide population, along with the elimination or reduction of water contamination, we have synthesized the mixed-lanthanide metal organic framework (MOF) with the formula m((x))M((1-x))BTC(DMF) {m = Ce(III), M = La(III), x = 0.8} via the solvothermal technique to separate Nd ions from water. The cooperative interaction between La(III) and Ce(III) has intensified the nonlinear properties of Ce0.8La0.2BTC(DMF) resulting in the high interaction between fabricated MOF and Nd ions. The as-prepared MOF was considered for various structural analyses and experimental conditions. Significantly, over 80% of Nd ions have been removed within 5 min and the maximum Nd uptake capacity (q(max)) determined by the Langmuir isotherm was 142.8 mg/g.