School of Chemistry and Molecular Engineering;
East China University of Science and Technology;
Shanghai;
China;
School of petrochemical engineering;
Changzhou University;
Changzhou;
China;
Department of Materials Science and Engineering;
University of Delaware;
Newark;
DE;
USA;
A; Simple; and; “Green”; Method; Magnetic; Hollow; Silica; Spheres; Magnetic; Targeting; Iron; Salts; Radioisotope; 99Tcm;