The uranium (VI) adsorption performance of g-C3N4/UiO-66 composite (CNUIO) was evaluated under different solution pH values, adsorbent dosages, coexisting ions, contact times, initial U(VI) concentrations, and temperatures. The surface properties and the interaction mechanism between U(VI) and CNUIO were analyzed via SEM–EDS, BET, FT-IR and XPS. CNUIO exhibited the maximum adsorption rate of 95.01% under the conditions of CU(VI) = 10 mg/L, pH = 6, M/V = 0.4 g/L, t = 120 min, and T = 298 K, which was about 25% and 33.73% higher than that of g-C...
