Size-controlled synthesis of Fe_(3)O_(4) and Fe_(3)O_(4)@SiO_(2) nanoparticles and their superparamagnetic properties tailoring  

作　　者：Muhammad Sajid Sidra Shuja Hongpan Rong Jiatao Zhang 

机构地区：[1]Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications,School of Materials Science&Engineering,Beijing Institute of Technology,Beijing,100081,China [2]Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications,Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering,School of Chemistry and Chemical Engineering,Institute of Engineering Medicine,Beijing Institute of Technology,Beijing,100081,China

出　　处：《Progress in Natural Science:Materials International》2023年第1期116-119,共4页自然科学进展·国际材料（英文版）

摘　　要：Superparamagnetic properties and fine-tuning of colloidal Fe_(3)O_(4) nanoparticles are important for their widespread biomedical applications.Herein,colloidal Fe_(3)O_(4) nanoparticles(NPs)of different sizes(8-20 nm)were prepared,and their hydrophilization with SiO_(2) shell coating to be Fe_(3)O_(4)@SiO_(2) core-shell had been realized successively.The size of Fe_(3)O_(4) NPs was controlled by different heating rates.Transmission electron microscope(TEM),powder X-ray diffractometry(XRD),and vibrating sample magnetometer(VSM)were performed to examine the morphology,crystallinity,and magnetic properties of the prepared Fe_(3)O_(4) and Fe_(3)O_(4)@SiO_(2) core-shell NPs,respectively.In addition,high resolution transmission electron microscope(HRTEM)results suggested that Fe_(3)O_(4) NPs had well crystallization.Enabled by such,their superparamagnetic properties can be fine-tuned accordingly and cater to their potential applications.

关 键 词：Fe_(3)O_(4)nanoparticles Fe_(3)O_(4)@SiO_(2)hydrophilization SUPERPARAMAGNETIC Core-shell Aqueous inverse microemulsion 

分 类 号：TQ138.11[化学工程—无机化工] TB383.1[一般工业技术—材料科学与工程]