Ni-Co-LDH with multistage structure was prepared via in situ hydrolysis using ZIF-67 as template.The effects of adsorption time,solution pH values,temperature and initial concentration of U(Ⅵ)on the adsorption performance of U(Ⅵ)were studied.The changes of microstructure,surface morphology and oxygen-containing groups of Ni-Co-LDH before and after adsorption of U(Ⅵ)were analyzed.The adsorption mechanism of Ni-Co-LDH on U(Ⅵ)was elucidated.The results show that pH value change is the main factor affecting the adsorption,and the optimum pH is ...