%0 Journal Article %T Role of silica mid-layer in thermal and chemical stability of hierarchical Fe3O4-SiO2-TiO2 nanoparticles for improvement of lead adsorption: Kinetics, thermodynamic and deep XPS investigation %A Esfandiari, Naeemeh %A Kashefi Torbati, Mehrdad %A Mirjalili, Mostafa %A Sima Afsharnejad %J Materials Science and Engineering B %@ 0921-5107 %D 2020