Chem. J. Chinese Universities ›› 2019, Vol. 40 ›› Issue (8): 1586.doi: 10.7503/cjcu20180832

• Articles: Inorganic Chemistry • Previous Articles     Next Articles

Mesoporous-structure Enhanced Photothermal Effect of Fe3O4 Superparticles@mesoporous Silica

WANG Xiaohui, WANG Kexin, LIU Junping, HONG Xia   

  1. Key Laboratory of UV-Emitting Materials and Technology, Ministry of Education, School of Physics, Northeast Normal University, Changchun 130024, China
  • Received:2018-12-12 Revised:2019-07-23 Online:2019-08-10 Published:2019-07-12
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.51272040, 11604043), the Thirteenth Five-Year Science and Tech-nology Research Project of Education Department of Jilin Province, China(No.JJKH20170910KJ) and the Open Project of of Key Laboratory UV-Emitting Materials and Technology of Northeast Normal University, China(No.130028853).

Abstract: Fe3O4 superparticles@mesoporous SiO2(Fe3O4SPs@mSiO2) were synthesized by the wet chemical method. The nanocomposites exhibited superparamagnetic property. They can rapidly accumulate near a commercial permanent magnet and redisperse in the aqueous solution with gently shaking. The absorption of Fe3O4SPs@mSiO2 in the near-infrared region was increased due to the coating of SiO2. And thus, their photothermal effect was improved. The construction of mesoporous structure facilitated to raise the utilization of near-infrared light, resulting in a further improvement of the photothermal performance of the nanocomposites. Moreover, the thicker the shell of the mesoporous SiO2 was, the superior the photothermal effect of the nanocomposites became. The vitro cell experiments confirmed that Fe3O4SPs@mSiO2 can effectively kill the cancer cells under the near infrared light irradiation.

Key words: Fe3O4 superparticles, Mesoporous SiO2, Superparamagnetism, Photothermal effect

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