Nano Express

Nanoscale Research Letters

, 4:640

First online:

Open Access This content is freely available online to anyone, anywhere at any time.

Bi-Functional Silica Nanoparticles Doped with Iron Oxide and CdTe Prepared by a Facile Method

  • Cuiling RenAffiliated withDepartment of Chemistry, Lanzhou University
  • , Jiefang SunAffiliated withDepartment of Chemistry, Lanzhou University
  • , Jinhua LiAffiliated withDepartment of Chemistry, Lanzhou University
  • , Xingguo ChenAffiliated withDepartment of Chemistry, Lanzhou University Email author 
  • , Zhide HuAffiliated withDepartment of Chemistry, Lanzhou University
  • , Desheng XueAffiliated withKey Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University


Cadmium telluride (CdTe) and iron oxide nanoparticles doped silica nanospheres were prepared by a multistep method. Iron oxide nanoparticles were first coated with silica and then modified with amino group. Thereafter, CdTe nanoparticles were assembled on the particle surfaces by their strong interaction with amino group. Finally, an outer silica shell was deposited. The final products were characterized by X-ray powder diffraction, transmission electron microscopy, vibration sample magnetometer, photoluminescence spectra, Fourier transform infrared spectra (FT-IR), and fluorescent microscopy. The characterization results showed that the final nanomaterial possessed a saturation magnetization of about 5.8 emu g−1and an emission peak at 588 nm when the excitation wavelength fixed at 380 nm.


Iron oxide nanoparticles CdTe Fluorescent Magnetic Preparation